STORAGE TECHNOLOGY CORP
10-K, 1999-03-05
COMPUTER STORAGE DEVICES
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<PAGE>   1
 
                                   FORM 10-K
- --------------------------------------------------------------------------------
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
     [X]         ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                  FOR THE FISCAL YEAR ENDED DECEMBER 25, 1998
 
                                       OR
 
     [ ]       TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
               For the transition period from  ______ to  ______
 
                         COMMISSION FILE NUMBER 1-7534
 
                         STORAGE TECHNOLOGY CORPORATION
             (Exact name of registrant as specified in its charter)
 
<TABLE>
<S>                                      <C>
                Delaware                                84-0593263
    (State or other jurisdiction of                  (I.R.S. Employer
     incorporation or organization)               Identification Number)
 
  2270 South 88th Street, Louisville,                   80028-4309
                Colorado                                (Zip Code)
(Address of principal executive offices)
</TABLE>
 
       Registrant's Telephone Number, including area code: (303) 673-5151
 
          Securities Registered Pursuant to Section 12(b) of the Act:
 
<TABLE>
<CAPTION>
                                                                 Name of Each Exchange
             Title of Each Class                                  on which Registered
- ----------------------------------------------       ----------------------------------------------
<S>                                                  <C>
   Common Stock ($.10 par value), including
   related   preferred stock purchase rights                    New York Stock Exchange
</TABLE>
 
          Securities Registered Pursuant to Section 12(g) of the Act:
 
                                      NONE
 
                                (Title of Class)
 
Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.  [X] YES    [ ] NO
 
Indicate by check mark if disclosure of delinquent filers pursuant to Item 405
of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.  [ ]
 
The aggregate market value of voting stock held by nonaffiliates of the
registrant was $2,557,715,628 based on the last reported sale price of the
common stock of the registrant on the New York Stock Exchange's consolidated
transactions reporting system on February 26, 1999. For purposes of this
disclosure, shares of common stock held by persons who hold more than 5% of the
outstanding common stock and common stock held by executive officers and
directors of the registrant have been excluded in that such persons may be
deemed to be "affiliates" as that term is defined under the rules and
regulations promulgated under the Securities Act of 1933. This determination is
not necessarily conclusive for other purposes.
 
As of February 26, 1999, there were 99,928,022 shares of common stock of the
registrant outstanding.
 
                      DOCUMENTS INCORPORATED BY REFERENCE
 
The registrant intends to file a definitive proxy statement pursuant to
Regulation 14A under the Securities Exchange Act of 1934 within 120 days of its
fiscal year ended December 25, 1998. Portions of the registrant's definitive
proxy statement for its annual meeting of stockholders to be held on May 20,
1999, are incorporated by reference into Part III of this Form 10-K.
<PAGE>   2
 
                                     PART I
 
ITEM 1.  BUSINESS
 
GENERAL
- -------
 
Storage Technology Corporation (StorageTek(R) or the Company) designs,
manufactures, markets and maintains information storage products, information
storage services and storage management software. For three decades, the Company
has provided customers with high-performance storage products. The Company
provides customers with a broad range of products, including tape, disk and
network products; storage services, including support services, integration
services, IT business consulting and technology services; and storage management
software.
 
The Company's business is organized into three reportable business segments:
storage products, storage services and storage management software. The Company
continually evaluates its organizational structure and, from time to time, may
determine to create, discontinue, merge or reconfigure its organizational
structure to meet changing customer demands, sales channels, and product and
services offerings.
 
The Company's products are used by a range of customers that include large
multinational companies, small businesses, and governmental agencies,
encompassing a wide range of industry sectors, including financial, retail,
telecommunications, airlines and services, as well as educational, scientific
and medical institutions located around the world. The Company markets its
products and services through its direct sales organization and indirect sales
channels, including original equipment manufacturer (OEM), value-added
distributor (VAD), value-added reseller (VAR) and other distribution
arrangements.
 
StorageTek's strategy is focused on providing information-centric solutions that
allow the customer to collect, move, store, share and protect digital
information. The Company's strategy of delivering solutions to customers which
turn data into information and information into power is founded on a virtual,
intelligent storage architecture ("VISTA") technology model, which is grounded
in a industry standard and a commitment to open storage management. The
following chart identifies the multi-layered VISTA model.
 
<TABLE>
<S>                            <C>
- ----------------------
  Systems Management
- ----------------------
     Applications
- ----------------------
  Storage Management
- ----------------------         VISTA Architecture
Storage Administration
- ----------------------
    Storage Access
- ----------------------
   Physical Storage
- ----------------------
</TABLE>
 
The key features of the Company's VISTA model include open storage solutions
that allow the customer to mix-and-match products from a number of vendors;
intelligent storage solutions that contain embedded intelligence apart from the
server; and integrated storage solutions that provide customers with a complete,
scalable product hierarchy, storage management and services. StorageTek intends
to provide many of the components in the VISTA model, and to build partnerships
with other vendors to provide customers with total information-centric storage
solutions. To this end, StorageTek continues to establish strategic alliances
and partnerships with other manufacturers, developers, distributors and
suppliers. As a result, it is possible for other companies to be at various
times collaborators, customers and competitors in different markets.
 
                                        2
<PAGE>   3
 
The Company was incorporated in Delaware in 1969. Its principal executive
offices are located at 2270 South 88th Street, Louisville, Colorado 80028-0001,
telephone (303) 673-5151.
 
THE ASSUMPTIONS, ANTICIPATIONS, EXPECTATIONS AND FORECASTS CONTAINED IN THE
FOLLOWING DESCRIPTION REGARDING THE COMPANY'S FUTURE PRODUCT AND BUSINESS PLANS,
FINANCIAL RESULTS, PERFORMANCE AND EVENTS ARE FORWARD-LOOKING STATEMENTS. THE
COMPANY'S ACTUAL RESULTS MAY DIFFER MATERIALLY BECAUSE OF A NUMBER OF RISKS AND
UNCERTAINTIES. SOME OF THESE RISKS ARE DETAILED IN PART II, ITEM 7,
"MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF
OPERATIONS -- RISK FACTORS THAT MAY AFFECT FUTURE RESULTS," AND ELSEWHERE IN
THIS FORM 10-K.
 
STATEMENTS MADE HEREIN ARE ACCURATE ONLY AS OF THE DATE OF FILING OF THIS FORM
10-K WITH THE SECURITIES AND EXCHANGE COMMISSION AND MAY BE RELIED UPON ONLY AS
OF THAT DATE. THE COMPANY DISCLAIMS ANY OBLIGATION TO UPDATE INFORMATION OR
FORECASTS CONTAINED HEREIN, EXCEPT AS MAY OTHERWISE BE REQUIRED BY LAW.
 
PRINCIPAL PRODUCTS
- ------------------
 
StorageTek's business is organized into three reportable business segments:
storage products; storage services; and storage management software. The
Company's storage product offerings include tape, disk and network products.
Storage services offerings include support services for StorageTek and
third-party products, integration services, IT business consulting and
technology services. The storage management software segment sells and licenses
software products. The following table presents information about each of the
three business segments, including revenue from external customers and gross
profit. The Company does not allocate research and product development costs;
selling, general, administrative and other income and expense; interest income;
interest expense; provision for income taxes; or extraordinary items to the
segments. All of the Company's assets are retained and analyzed at the corporate
level and are not allocated to the individual segments.
 
                  REVENUE AND GROSS PROFIT BY BUSINESS SEGMENT
                           (IN THOUSANDS OF DOLLARS)
                              YEAR ENDED DECEMBER
 
<TABLE>
<CAPTION>
                                                      1998          1997          1996
                                                   ----------    ----------    ----------
<S>                                                <C>           <C>           <C>
Revenue
  Storage products                                 $1,520,647    $1,495,038    $1,452,871
  Storage services                                    633,821       584,016       541,963
  Storage management software                         103,754        65,602        44,716
                                                   ----------    ----------    ----------
          Total revenue                            $2,258,222    $2,144,656    $2,039,550
                                                   ----------    ----------    ----------
                                                   ----------    ----------    ----------
Gross profit
  Storage products                                 $  688,050    $  669,914    $  567,285
  Storage services                                    273,662       265,521       262,850
  Storage management software                          78,698        37,691        16,638
                                                   ----------    ----------    ----------
          Total gross profit                       $1,040,410    $  973,126    $  846,773
                                                   ----------    ----------    ----------
                                                   ----------    ----------    ----------
</TABLE>
 
Additional information concerning revenue from each of the Company's business
segments and geographic information is found in Part II, Item 7, "Management's
Discussion and Analysis of Financial Condition and Results of Operations," and
in Part IV, Item 14, Note 13, of NOTES TO CONSOLIDATED FINANCIAL STATEMENTS, of
this Form 10-K, which information is incorporated by reference into this Part I,
Item 1.
 
                                        3
<PAGE>   4
 
STORAGE PRODUCTS
- ----------------
 
The Company's storage products, which accounted for 67% of total revenue in
1998, include a range of tape, disk and network products that serve as
components of the Company's VISTA model. The Company's storage products are
designed for the mainframe, client-server and evolving storage area network
(SAN) markets.
 
TAPE PRODUCTS
 
The Company's tape products historically have generated significant revenue for
the Company. The Company's tape products are engineered to provide reliable,
cost-effective storage of digital information. In December 1998, the Company
announced the availability of the 9840 product, a high-performance,
high-capacity tape drive. The 9840 tape drive is a new-generation tape drive
that is designed to provide fast data access, and support a broad range of
applications including backup and restore, hierarchial storage management (HSM),
and new applications enabled by this technology such as imaging and video
applications. The Company's other tape products include the TimberLine(R), a
high-performance 36-track cartridge subsystem, which first became available in
the fourth quarter of 1994; the Redwood(R) SD-3, a high-capacity cartridge
subsystem, which became available in 1995; the Twin Peaks 4890 36-track
cartridge subsystem, a cartridge subsystem designed for the client-server
market, which has been available since 1996; the first generation 36-track
subsystems, including Silverton, which were first introduced in 1993; and the
first generation, 4480 18-track cartridge subsystem, which was introduced in
1987.
 
The Company also offers the PowderHorn(R) 9310 Automated Cartridge System (ACS),
a high-performance, high-capacity cartridge library that is compatible with
large UNIX, supercomputing and mainframe systems, which became available in
1993; the TimberWolf(TM) automated tape library product family, which is
designed to provide low cost, reliable storage solutions for the client-server
market, and which first became available in 1996; and the first generation 4410
ACS library, which has been available since 1988.
 
The Company is currently developing new tape products and enhancements, all of
which are in the design, preliminary engineering or engineering validation
testing phase and for which no availability dates have been announced. See Part
II, Item 7, "Management's Discussion and Analysis of Financial Condition and
Results of Operations," of this Form 10-K, which is incorporated by reference
into this Part I, Item 1, for a discussion of operating results and certain
risks associated with the development and introduction of new products that may
affect future results.
 
DISK PRODUCTS
 
The Company's disk product offerings include a family of disk systems that offer
a spectrum of capacity, performance, connectivity and price. The Company's disk
product offerings include Iceberg(R), which utilizes virtual disk technology,
and is currently targeted for the mainframe market. Iceberg is designed to
provide high-performance, scalability and continuous online data availability,
and first became available in 1994. The Company also offers the OPENstorage(TM)
Disk product family, which is designed for the client-server disk market. The
OPENstorage products are designed to provide high-performance,
high-availability, scalable physical storage, and first became available in the
third quarter of 1996.
 
Since the third quarter of 1996, Iceberg has been principally sold through a
worldwide, non-exclusive OEM agreement with International Business Machines
Corporation (IBM) as the RAMAC Virtual Array (RVA). This OEM agreement expires
in December 2000. In 1998 and 1997, approximately 20% and 19%, respectively, of
the Company's total revenue was derived from OEM sales to IBM. The Company
anticipates that IBM will remain the major distribution channel for the Iceberg
product in 1999. See "Risk Factors That May Affect Future Results -- Dependence
on IBM," for discussion of the risks associated with IBM. The OPENstorage Disk
products are distributed by the Company's direct sales force and through
indirect channels.
 
                                        4
<PAGE>   5
 
The Company anticipates that in the future IBM will reduce its level of
purchases under the OEM agreement. The Company's strategy for the Iceberg
product in 1999 will focus on increasing the sales activities of its direct
sales channel, developing new distribution channels, and introducing virtual
disk products based on the Iceberg technology for the client-server market.
Under the OEM arrangement with IBM, the Company is developing new disk
technology, some of which will be owned by IBM, and IBM has granted the Company
both royalty-bearing and royalty-free licenses to use this technology. These
disk products are currently in the design, preliminary engineering or
engineering validation testing phase and for which no availability dates have
been publicly announced. There can be no assurances that the Company will be
successful in timely developing, introducing, or marketing new disk products and
enhancements, or establishing cost-effective, high-volume distribution channels
for its disk products.
 
NETWORK PRODUCTS
 
A key element of the Company's VISTA model is the sharing of information across
a network. The Company's network products are designed to provide device
interface and host interface with the physical storage and the connectivity
infrastructure necessary to enable the integration of network-based storage
management functions. The Company is dedicating significant resources to manage
the development of these key components of the VISTA model. The Company's
principal network products include the StorageNet(R) family of products, which
are designed to provide high-performance, high-speed connectivity between local
and wide-area networks and serve as the foundation of StorageTek's SAN
infrastructure. The first StorageNet products became available in 1996. The
StorageNet product group was expanded during 1997 and 1998, and now includes the
StorageNet SCSI Extender, StorageNet SCSI Multiplexer, StorageNet Fibre Channel
Hub 1000, StorageNet Fibre Channel SCSI Bridge 3100, StorageNet Fibre Channel
Switch 4000 and StorageNet Access Hub.
 
The Company also offers customers a range of network security products,
including hardware and software, that are designed to allow customers to
implement, maintain and monitor secured network environments. These products
include the NetSentry(R) and the family of BorderGuard(R) products.
 
STORAGE SERVICES
- --------------------
 
The Company's storage services include support services, integration services,
IT business consulting and technology services. The Company provides support
services for both StorageTek products and third-party equipment around the
world, using a combination of service engineers, remote diagnostic tools, online
and telephone assistance, and partnerships with strategic third-party service
providers. In 1998, the Company's storage services revenue accounted for
approximately 28% of total revenue.
 
A key element of the Company's strategy is to grow the storage services beyond
the traditional product maintenance and support business. The Company has
devoted resources to expanding the services business and, in 1998, the Company
implemented a number of new service programs. These programs include, offering
multi-vendor support services, broadening the range of consulting and
integration service offerings, and developing pre-packaged solutions customized
to specific customer application needs.
 
The Company's consulting and integration services are designed to generate
revenue growth through professional service fees, as well as through the
reselling of third-party hardware and software solution components. These
services are directed both at the Company's traditional customers as an avenue
to expand the relationship, and at emerging, high-growth data storage markets
targeted by the Company, including document management, check imaging, medical
imaging, digital broadcasting, scientific, and geographical information systems.
Among the traditional customer base, StorageTek's new technology offerings,
including StorageTek's SAN products, are expected to provide new growth
opportunities for consulting and integration services.
 
                                        5
<PAGE>   6
 
The Company's services business strategy includes providing customers with
additional pre-packaged offerings. In 1999, the Company announced an "appliance"
strategy in which mission-specific, integrated hardware and software packages
are sold as packaged units. These offerings are directed at e-mail archival, PC
backup, and multi-media archival application market spaces. These applications
address rapidly expanding data volumes in the Company's existing customer base,
and they each represent classes of data that have not traditionally been stored
on StorageTek products. These applications also provide the Company with new
product offerings for the Internet and Intranet market spaces. The Company
expects to achieve substantial competitive advantage in these high-growth
storage markets by including value-add software and integration services in the
creation of these appliances.
 
The Company plans to provide another category of bundled service offering in
1999 through its Storage Utility Services package. This bundled service offering
is designed to take advantage of the rapid growth of communications bandwidth
and dramatic fall in communications costs and will offer remote storage capacity
as a utility service offering. This service offering is expected to help protect
customers from the accelerating technology obsolescence cycles inherent to the
high-tech industry.
 
The Company believes that its storage services business is an important
strategic asset. The Company expects that the storage services business will
provide a significant opportunity for revenue growth. There can be no assurances
that the Company will be successful in its initiative to include storage
services as part of an integrated packaged solution with products and software
or achieving its services business revenue growth objectives.
 
In the past, the Company's product support services had been the principal
source of service revenue. The Company generally warrants its products for a
specified period of time, after which it services products for a fee under
maintenance agreements. As a result of competitive pressures, many of the
Company's products may include extended warranty periods. Extending warranty
periods may reduce future product support revenue and put downward pressure on
profit margins. The Company's product support revenue also may be adversely
affected by the Company's increasing reliance on indirect distribution channels
for its products, as some indirect distributors, provide service for the
products that they sell.
 
STORAGE MANAGEMENT SOFTWARE
- ---------------------------
 
In January 1999, the Company realigned its organization to create a new business
unit dedicated to developing storage management software. Storage management is
a fundamental layer of the VISTA model and the Company believes that its storage
management software will be important to its competitiveness in the SAN and
server-attached markets. The Company's approach is based on delivering open,
intelligent and integrated storage solutions, which will require a comprehensive
storage management strategy. The Company intends to continue to develop software
tools and will work with other software vendors to enable it to deliver a total
solution. In 1998, storage management software accounted for approximately 5% of
total revenue.
 
The Company's principal storage management software include the following
products. The Virtual Storage Manager (VSM(TM)) is a software driven data
storage management solution designed to improve performance, cartridge
utilization and overall storage management using StorageTek's storage products.
VSM is engineered to support the demands created by data center consolidation,
electronic commerce, data warehousing and enterprise resource planning. VSM
first became available in December 1998 and is expected to serve as a
significant component in the Company's software strategy. SnapShot(TM) software,
which uses the virtual disk architecture of the Company's Iceberg product, is
designed to provide virtual duplication and significantly reduce CPU and channel
utilization costs associated with data movement. SnapShot allows customers to
accelerate year 2000 testing to improve decision support and business
continuance processes. The SnapShot product was first released in 1996.
 
                                        6
<PAGE>   7
 
The Company offers a number of software solutions to improve the performance of
the tape and library storage products, including the Nearline(R) management
software, Nearline enablement software and tape applications software. The
Nearline management software products are designed to integrate with various
independent software products, to provide reporting, management and monitoring
functions for tape systems, and were first available in 1989. Tape application
software provides high-performance backup and recovery applications. These
products include the Expert High Performance Data Mover and Expert Library
Manager, and were first released in the third quarter 1998.
 
Central Archive Management (CAM) software products are designed to provide
comprehensive data backup and restore storage management functionality across
the enterprise in distributed environments. CAM was first released in 1995. The
REEL software products include a scalable family of tape-management, backup and
restore and connectivity software for networked open system environments. The
software is designed to provide customers with high performance, flexibility and
scalability in UNIX and Windows NT environments. REEL was first released in
1993.
 
The Company's software strategy includes partnering with other vendors and
equipment manufacturers to distribute its software products. The Company
currently distributes SnapShot primarily through an OEM agreement with IBM, but
is expanding its sales of SnapShot through the direct sales channel. Delays in
gaining significant market acceptance for VSM, and delays in introducing VSM and
SnapShot software designed for the open systems market could adversely affect
the Company's operating and financial results.
 
BACKLOG
- -------
 
As of December 25, 1998, the storage product order backlog was approximately $42
million, compared to year-end amounts of approximately $27 million in 1997, and
$42 million in 1996. In addition to the backlog amount, as of December 25, 1998,
the Company had approximately $64 million of storage product inventory held by
customers on evaluation, compared to $51 million as of December 26, 1997, and
$90 million on December 27, 1996. The order backlog for storage management
software products on December 25, 1998 was approximately $4.5 million, and at
year-end 1997 and 1996 was $0.2 million and $1 million, respectively. See Note 1
of NOTES TO CONSOLIDATED FINANCIAL STATEMENTS of this Form 10-K for a discussion
of the Company's significant accounting policies.
 
Backlog amounts are calculated on an "if sold" basis and include orders from
end-users, OEMs, VADs, VARs and distributors for products that StorageTek
expects to deliver during the following 12 months. Product units held by
customers on evaluation or covered by letters of intent are not included in
backlog amounts. Unfilled orders and orders with respect to inventory held by
customers on evaluation may be canceled by the customer. Accordingly, backlog
levels are not a reliable indicator of future results, and there can be no
assurance that orders in backlog or inventory held by customers on evaluation
will ultimately be recognized as revenue.
 
MARKETING AND DISTRIBUTION
- --------------------------
 
StorageTek markets its products and services globally, through a combination of
a direct sales organization and indirect sales channels. The Company now
maintains a presence in most major cities in the world. The Company operates
sales and service offices throughout the United States and Europe, as well as
Australia, Brazil, Canada, China, Japan, Malaysia, Mexico and Singapore, and
sells its products and services through independent distributors, sometimes in
tandem with direct sales and support service operations, located in Africa,
Europe, South America and New Zealand.
 
The Company's direct sales organization includes sales representatives, service
engineers, system engineers, system integrators, and administrative support
staff. The Company's direct sales outside the United States are generally made
by foreign sales subsidiaries. The Company's indirect channels include: OEMs,
VARs, master resellers who supply product and services to VARs, VADs, system
integrators that integrate StorageTek products with other hardware and software
and independently
 
                                        7
<PAGE>   8
 
provide marketing and support services to customers, and independent
distributors, who primarily operate in geographic areas where StorageTek does
not have a direct presence. Indirect channel sales account for an increasing
portion of the Company's product sales revenue. In 1998 and 1997, the Company's
indirect distribution channel accounted for approximately 46% and 40%,
respectively, of the Company's total product and software revenue.
 
Expanding the distribution channels for its products, services and software is
important to the Company's long-term success. A significant indirect channel
partnership includes the Company's non-exclusive, worldwide OEM agreement with
IBM for disk products and software. The Company also has a number of OEM
partners for tape products including, among others, Bull Alliance Compagnie,
Dell Computer Corporation, Hewlett-Packard Company, NCR Corporation, Sequent
Computer Systems Inc., Siemens Nixdorf, Silicon Graphics, Inc. and Unisys
Corporation. The Company anticipates that the IBM OEM agreement will remain the
major distribution channel in 1999 for Iceberg and SnapShot. The Company plans
to devote significant resources in 1999 to expand the direct sales of Iceberg in
anticipation of reduced sales levels to IBM in the future. There can be no
assurances that the Company will be successful in developing a strong direct
channel for these products.
 
The operations and financial conditions of the Company's indirect sales partners
are important to the Company's success. A significant reduction or delay in
sales to a major reseller could adversely affect the Company's operating
results. The Company's reliance on its indirect sales partners may adversely
affect future support service revenue, as OEM customers and some resellers
generally provide maintenance for their own products.
 
Revenue from outside the United States accounted for approximately 37% of total
revenue in 1998, 34% in 1997, and 41% in 1996, which includes sales to
end-users, resellers and distributors. In each of these three fiscal periods,
over two-thirds of the Company's revenue originating outside the United States
was derived from Europe, with the majority of the balance coming from Japan,
Australia and Canada. The Company is subject to various risks associated with
conducting business outside the U.S. See Part II, Item 7, "Management's
Discussion and Analysis of Financial Condition and Results of Operations --
International Operations and Market Risk Management/Foreign Currency Exchange
Risk, and -- Risk Factors That May Affect Future Results -- Euro Conversion,"
and Note 12 of NOTES TO CONSOLIDATED FINANCIAL STATEMENTS of this Form 10-K for
a discussion of risk factors associated with the Company's international
business, which information is incorporated by reference into this Part I, Item
1.
 
MANUFACTURING AND MATERIALS
- ---------------------------
 
The Company's primary manufacturing and assembly facilities are located in
Colorado, Puerto Rico, Minnesota and France. All of the Company's manufacturing
facilities are currently in compliance with the ISO 9001 or 9002 international
quality standards.
 
StorageTek manufactures certain key components for its products. In addition, a
substantial portion of the Company's production costs is related to the purchase
of subassemblies, parts and components for its products from vendors located
within and outside the United States. The balance of the Company's production
costs relates to in-house manufacturing, assembly and testing. In particular,
the Company manufactures its own read/write heads for the 9840 tape drive
product. The successful manufacture of such heads gives the Company a
competitive edge in that it has developed a key proprietary design and
manufacturing technologies. However, due to the sophisticated nature of the
exacting manufacturing process steps associated with tight physical, electrical
and chemical tolerances, the Company must rely on its own skilled personnel and
capital intensive resources to meet customer demand for products incorporating
its tape head technologies. Even within a cleanroom environment, minor equipment
malfunctions in any one of many manufacturing process steps due to factors such
as extraneous chemical contaminants, ambient particulate, power surges, optical
misalignments, timing or temperature variations could halt production for an
indeterminate amount of time. To help mitigate these
 
                                        8
<PAGE>   9
 
risks, the Company is working to establish, staff and qualify a second tape head
manufacturing line facility located near the present manufacturing operations.
 
Certain of the parts and components included in the Company's products are
obtained from a single source or a limited group of suppliers. In particular,
Imation Corporation is a single source supplier for the 9840 tape cartridges,
and the Company is dependent upon Sumitomo Corporation for materials used in the
Company's tape drive recording heads. The Company is also dependent on IBM for
disk drives used in the Company's Iceberg product which are sold to IBM under an
OEM agreement and which the Company sells through its own direct sales channel.
Dependence upon single or limited source vendors involves a number of risks,
including the possibility of a shortage of key components, longer lead times,
and reduced control over production and delivery schedules.
 
The Company has long-term supply contracts with certain vendors and suppliers;
the remaining parts and components are obtained by delivering purchase orders to
vendors specifying the required components. These vendors are not obligated to
supply products for an extended period at specific quantities and prices. See
Part II, Item 7, "Management's Discussion and Analysis of Financial Condition
and Results of Operations -- Risk Factors that May Affect Future Results -- Sole
Source Suppliers," of this Form 10-K for a discussion of factors that may affect
the Company's ability to obtain materials from sole source suppliers, which
information is incorporated by reference into this Part I, Item 1.
 
COMPETITION
- -----------------
 
The markets for the Company's products, services and software are intensely
competitive and are subject to continuous, rapid technological change, frequent
product performance improvements, short product life cycles and aggressive
pricing. The Company competes in a number of markets that include a broad
spectrum of customers. The Company competes primarily on the basis of
technology, product availability, performance, quality, applications and
industry solutions, reliability, price, distribution and customer service. The
Company believes that its ability to compete depends on a number of factors,
both within and outside of its control. These factors include the price and cost
of the Company's and its competitors' product offerings, the timing and success
of new products and applications, product introductions by the Company's
competitors, and general economic and business conditions within and outside the
United States. Strong competition has resulted in price reductions in the past
and the Company expects this trend to continue.
 
The Company expects that the markets for its products, services and software,
and its competitors within such markets, will continue to change in response to
shifting customer storage requirements and technological advances. The Company's
competitors include, among others, Compaq Computer Corporation, EMC Corporation,
Hewlett-Packard Company, Hitachi Ltd., IBM and Sun Microsystems, Inc. A number
of the Company's competitors have significantly greater market presence and
financial resources than the Company.
 
The Company is focusing significant resources on product offerings for the
client-server market. Competition in the client-server market is aggressive and
is based primarily upon performance, quality, system scalability, price, service
and name recognition. The client-server market includes a wide range of
customers including customers outside of the Company's traditional customer
base. Many of the Company's potential customers in the client-server market
purchase their storage requirements as part of a bundled product, which may
provide a competitive advantage to the Company's rivals. The Company expects to
address a number of these competitive factors through its SAN strategy, which
emphasizes an open, intelligent and integrated storage solution, and is capable
of operating in a range of environments, and by developing distribution
relationships with its competitors. The Company anticipates that the competition
in the SAN market will intensify in the future as its competitors aggressively
seek to position themselves to take advantage of the shift in customer demands.
The SAN market is characterized by various alliances formed to promote industry
standards and deliver tested, interoperable SAN technology. The Company is a
member of several associations, which also include
 
                                        9
<PAGE>   10
 
the Company's competitors. In addition, a number of the Company's competitors in
the product, services and software markets have formed alliances with the stated
objective of developing interoperable SAN solutions. For example, 3Com
Corporation, Legato Systems, Inc. and MTI Technology Corporation have formed an
alliance to deliver tested SAN solutions. In the storage management software
market, the Company competes with vendors with which it has established
partnerships, including that of Legato Systems, Inc. and VERITAS Software
Corporation.
 
The Company works with third-party maintenance service providers and, in
connection with specific projects, the Company partners with established
companies to provide consulting services. The Company's ability to compete in
the services markets is dependent upon its ability to attract and retain highly
skilled technical professionals and the price, flexibility, reliability, quality
and price competitiveness of the Company's solutions.
 
NEW PRODUCT DEVELOPMENT
- --------------------------------------
 
StorageTek invests substantial resources to develop new products, software and
enhancements. In 1998, 1997 and 1996, the Company incurred research and
development costs for these product and software development activities of
approximately $235 million, $210 million and $176 million, respectively. In
order to expand the Company's access to new technologies and reduce the amount
of time necessary to bring new products to the market, the Company in the past
has acquired other companies and has entered into joint development and other
similar relationships. For example, the Company has an OEM agreement with IBM
under which IBM has financed certain research and development activities
conducted by the Company associated with mainframe disk products. In 1998 and
1997, the Company received approximately $50 million and $46 million,
respectively, of research and product development funding from third parties.
The Company anticipates that its research and development costs will increase
during 1999 as the funding from third parties is expected to decrease, and as a
result of the Company's commitment to invest resources to develop new products
and software.
 
As of December 25, 1998, approximately 1,500 employees were engaged on a
full-time basis in engineering and product development activities, primarily at
several facilities located in the United States, including Colorado and
Minnesota, and at facilities located in France and Australia. For further
discussion of risk factors concerning product development, see Part II, Item 7,
"Management's Discussion and Analysis of Financial Condition and Results of
Operations -- Risk Factors that May Affect Future Results -- New Products,
Markets and Distribution Channels," of this Form 10-K, which information is
incorporated by reference into the Part I, Item 1.
 
PATENTS AND LICENSES
- ------------------------------
 
StorageTek's ability to compete is affected by its ability to protect its
proprietary information. StorageTek protects its proprietary rights through a
combination of patents, trademarks, copyrights, confidentiality procedures,
trade secret laws and licensing arrangements. The Company's policy is to apply
for patents, or other appropriate proprietary or statutory protection, in both
the United States and selected foreign countries to establish its proprietary
rights in new or improved technology. StorageTek currently holds approximately
400 United States patents, as well as foreign counterparts to many of these
patents in selected countries, covering various aspects of its products. These
patents will expire from 1999 through 2017. The Company also has pending in the
United States numerous patent applications, including several that have been
allowed and are expected to be formally issued, as well as pending foreign
counterparts to many of these applications. In addition, StorageTek has licenses
to use patents held by others. For example, under the OEM agreement between IBM
and the Company, IBM has granted StorageTek both royalty-bearing and
royalty-free licenses to use technology developed under the agreement. Taken as
a whole, these assets are material to the Company's business. However, no
individual patent, license or other item of proprietary information is
singularly material to the Company's business.
 
                                       10
<PAGE>   11
 
The Company has ongoing legal proceedings relating to certain of its patents.
For a discussion of certain legal proceedings relating to the Company's patents,
see Part I, Item 3, "Legal Proceedings" of this Form 10-K, which information is
incorporated by reference into this Part I, Item 1.
 
ENVIRONMENT
- -----------
 
Compliance with the provisions of federal, state and local laws regulating the
discharge of materials into the environment, or otherwise relating to the
protection of the environment, has not had a material adverse effect on the
financial results and operations of the Company. The Company did not have any
material expenditures for environmental control facilities in 1998. The Company
does not currently have pending and has not budgeted any material estimated
expenditures for environmental control facilities during 1999. However,
potential liability under environmental legislation is ongoing, regardless of
whether or not the Company has complied with existing governmental guidelines.
The Company has received notice from the State of Florida and the United States
Environmental Protection Agency regarding a potential matter involving ground
water contamination and remediation activities at a property located in Palm
Bay/Melbourne, Florida. The Company is currently not able to predict the outcome
or potential expenditures associated with this matter but does not expect that
it will have a material adverse effect on the financial results and operations
of the Company.
 
Government regulation of the environment and related compliance costs have
increased in recent years. The Company cannot predict the nature or scope of
future environmental laws or regulations, how they will be administered, or
whether compliance will require substantial expenditures. Based upon currently
available information, the Company expects future compliance with existing
environmental regulations will have no material effect on the financial results
and operations of the Company.
 
RISKS ASSOCIATED WITH THE YEAR 2000
- -----------------------------------
 
The Company's product lines include information storage products and software
that collect, move, share, store and protect data. In order to properly process
data, the Company's products must successfully manage and manipulate data that
includes both 20th and 21st century dates (be Year 2000 Ready). The Company has
evaluated all of its currently offered products and software and believes that
they are Year 2000 Ready, provided they have been upgraded to include all
recommended engineering changes. However, there can be no assurance that the
Company's current products and software will be Year 2000 Ready in all
environments. In addition, the Company does not currently intend to develop
modifications to certain of its older products to make them Year 2000 Ready and
is in the process of notifying the affected maintenance customers of potential
year 2000 problems with older products and software in order to raise their
awareness.
 
The Company is in the process of assessing its year 2000 readiness, and is
replacing many of its internal information systems. These programs, the
projected costs associated with these programs, the status of the Company's
assessment of the year 2000 readiness of its key suppliers and vendors, and
certain risks arising from the year 2000 are discussed in Part II, Item 7,
"Management's Discussion and Analysis of Financial Condition and Results of
Operations -- Risk Factors That May Affect Future Results -- Information Systems
Transition, and -- Risks Associated with the Year 2000", of this Form 10-K,
which information is incorporated by reference into this Part I, Item 1.
 
EMPLOYEES
- ---------
 
The Company employed approximately 8,700 persons on a full-time basis worldwide
as of December 25, 1998. The Company's future success is dependent, in part, on
its ability to attract, retain and motivate highly skilled personnel.
 
                                       11
<PAGE>   12
 
OTHER MATTERS
- -------------
 
The Company's results historically have experienced seasonality, with increased
revenue in the Company's fourth quarter compared to other quarters because
customers tend to make purchase decisions near the end of the calendar year.
There can be no assurance that this historical trend will continue in 1999 and
that revenue during the fourth quarter will be higher than any other quarter.
 
During 1998, sales of the Company's disk products to IBM accounted for
approximately 20% of the Company's total revenue. Approximately 15% of the
Company's outstanding accounts receivable balance on December 25, 1998, was due
from IBM. No other single customer accounted for 10% or more of the Company's
total revenue in 1998.
 
No material portion of the Company's business is subject to contract termination
at the election of the United States government.
 
Reference is made to the following NOTES TO THE CONSOLIDATED FINANCIAL
STATEMENTS set forth in Part IV, Item 14, of this Form 10-K for certain
additional information, which information is incorporated by reference herein:
 
     Note 5    Description of the Company's credit facilities, debt and lease
               obligations.
 
     Note 8    Description of the Company's common stock.
 
     Note 12   Description of the Company's financial instruments and
               off-balance-sheet risks.
 
     Note 13   Information on the operations of business segments and in
               geographic areas. See also Part II, Item 7, "Management's
               Discussion and Analysis of Financial Condition and Results of
               Operations -- International Operations and Market Risk
               Management/ Foreign Currency Exchange Risk," for further
               discussion of the risks associated with the Company's foreign
               operations.
 
Reference is also made to Part II, Item 7, "Management's Discussion and Analysis
of Financial Condition and Results of Operations," of this Form 10-K, for
information regarding liquidity, including working capital practices and risk
factors that may affect future results.
 
ITEM 2.  PROPERTIES
 
StorageTek conducts its operations worldwide and occupies both leased and owned
facilities. At the present time, such facilities are adequate for the Company's
purposes.
 
Colorado. StorageTek occupies facilities in 17 separate buildings in Boulder
County, Colorado, comprising approximately 2.0 million square feet. The Company
owns facilities with approximately 1.6 million square feet; the remaining space
is leased. These facilities include StorageTek's executive offices, as well as
manufacturing, research and development, and spare parts storage facilities.
Substantially all of the Boulder County space is fully utilized. The Company
also leases approximately 62,500 square feet of office space located nearby
Jefferson County, Colorado.
 
Other United States Properties. StorageTek owns approximately 200,000 square
feet of manufacturing facilities in the Palm Bay/Melbourne, Florida, area. A
majority of this space is leased to a third party. The Company owns 200,000
square feet of manufacturing, research and development, and administrative
facilities in the Minneapolis, Minnesota, area, which is approximately 85%
utilized. The Company occupies manufacturing facilities in Puerto Rico, of which
approximately 78,000 square feet are owned and 50,000 square feet are leased.
The facilities in Puerto Rico are fully utilized. The Company also leases office
and customer facilities throughout the United States at approximately 140
locations comprising approximately 850,000 square feet.
 
International Properties. StorageTek leases approximately 200,000 square feet of
engineering, manufacturing and marketing facilities in Toulouse, France, which
are approximately 75% utilized. In addition, StorageTek leases facilities at
locations throughout the world, primarily for sales and customer
 
                                       12
<PAGE>   13
 
support activities, spare parts storage, and limited research and product
development activities. The Company maintains offices in 16 locations in Canada
comprising approximately 100,000 square feet, two offices in Latin America
comprising 8,000 square feet, over 70 offices in Europe comprising approximately
455,000 square feet, and 12 offices in the Asia/Pacific region comprising
approximately 80,000 square feet. Many of the Company's leases throughout the
world contain renewal rights, cancelation rights and rights of first refusal on
contiguous expansion space.
 
ITEM 3. LEGAL PROCEEDINGS
 
In January 1994, Stuff Technology Partners II, a Colorado Limited Partnership
(Stuff), filed suit in Boulder County, Colorado, District Court against the
Company and certain subsidiaries. The suit alleged that the Company breached a
1990 settlement agreement that had resolved earlier litigation between the
parties. The suit sought injunctive relief and damages in the amount of $2.4
billion. On December 28, 1995, the court dismissed the complaint. Stuff appealed
the dismissal to the Colorado Court of Appeals. In March 1997, the Court of
Appeals reversed the District Court's judgment and remanded the case to the
District Court for further proceedings. In December 1997, the Colorado Supreme
Court rejected the Company's petition seeking a reversal of this decision. A new
trial date has not been set. The case is in the discovery phase.
 
On June 29, 1995, Odetics, Inc. (Odetics) filed a patent infringement suit in
the U.S. District Court for the Eastern District of Virginia against the Company
alleging that the "pass-through" port in certain of the Company's tape library
products infringed U.S. Patent No. 4,779,151 (the "151 Patent"). The complaint
asked the court to impose injunctive relief, treble damages in an unspecified
amount, and an award of attorney's fees and costs. In February 1996, a jury
found that the Company's products did not infringe the 151 Patent. Odetics
appealed and in June 1997, the U.S. Court of Appeals for the Federal Circuit
reversed the District Court's ruling and remanded the case back to the District
Court for further proceedings. On March 27, 1998, a second trial was held and a
jury found that a pass-through port in certain of the Company's tape library
products willfully infringed the 151 Patent and awarded actual damages to
Odetics of $70.6 million. On July 31, 1998, the Court granted the Company's
motion for judgment as a matter of law, overturning the jury's verdict, and
entered judgment in favor of the Company. On August 10, 1998, Odetics appealed
the judgment to the U.S. Court of Appeals for the Federal Circuit, and on August
26, 1998, the Company filed a cross-appeal. These appeals are pending before the
U.S. Court of Appeals. Oral arguments on the appeal are scheduled for April
1999.
 
On December 8, 1995, Odetics filed a second patent infringement suit in the U.S.
District Court for the Eastern District of Virginia against the Company. The
complaint alleges that the "cartridge access port" in certain of the Company's
tape library products also infringes the 151 Patent. The complaint seeks
injunctive relief, treble damages in an unspecified amount, and an award of
attorney's fees and costs. This case has been stayed pending the outcome of the
case filed by Odetics on June 29, 1995, which is described above.
 
On October 3, 1995, certain former employees of the Company filed suit in the
U.S. District Court for the District of Colorado against the Company. The
amended suit alleges violations of the Age Discrimination in Employment Act
(ADEA) and the Employee Retirement Income Security Act (ERISA) between the
period of April 13, 1993, and December 31, 1996. On November 26, 1997, the Court
granted the plaintiffs' request to proceed as a collective action on the ADEA
claims. On November 9, 1998, the Court granted the plaintiffs' request to
proceed as a class on the ERISA claims. Approximately 1,300 persons are eligible
members of the ERISA class, which includes approximately 400 members of the ADEA
class. The Company has appealed the Court's certification of the ERISA class.
The plaintiffs seek, among other things, compensatory damages in an unspecified
amount, including the value of back pay and benefits; reinstatement as employees
or alternatively the value of future earnings and benefits; and exemplary or
liquidated damages. The Company has filed an answer denying both the ADEA and
ERISA claims. The case is in the discovery phase and a trial date has been set
for October 1999.
 
                                       13
<PAGE>   14
 
The Company believes it has adequate legal defenses with respect to each of the
actions cited above and intends to vigorously defend against these actions.
However, it is reasonably possible that these actions could result in outcomes
unfavorable to the Company. The Company is also involved in various other less
significant legal actions. While the Company currently believes that the amount
of the ultimate potential loss would not be material to the Company's financial
position, the outcome of these actions is inherently difficult to predict. In
the event of an adverse outcome, the ultimate potential loss could have a
material adverse effect on the Company's financial position or reported results
of operations in a particular quarter. An unfavorable decision, particularly in
patent litigation, could require material changes in production processes and
products or result in the Company's inability to ship products or components
found to have violated third-party patent rights.
 
Information concerning these legal proceedings is also contained in Note 7 of
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS included in Part IV, Item 14, of this
Form 10-K.
 
ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
No matter was submitted to a vote of StorageTek security holders during the
fourth quarter of the fiscal year ended December 25, 1998.
 
                      EXECUTIVE OFFICERS OF THE REGISTRANT
 
The following persons were serving as executive officers of the Company as of
March 5, 1999.
 
<TABLE>
<CAPTION>
NAME                                                   POSITION WITH COMPANY                        AGE
- -------------------------------------------------------------------------------------------------------
<S>                                 <C>                                                             <C>
David E. Weiss                      Chairman of the Board, President and Chief Executive Officer     54
 
Victor M. Perez                     Executive Vice President and Chief Operating Officer             48
 
Roger D. Archibald                  Vice President and General Manager, Enterprise Disk Business
                                      Group                                                          46
Thomas G. Arnold                    Vice President and Corporate Controller                          37
 
Jeffrey M. Dumas                    Corporate Vice President and General Counsel                     53
 
Gary D. Francis                     Vice President and General Manager, Enterprise Nearline
                                      Business Group                                                 51
Robert S. Kocol                     Corporate Vice President and Chief Financial Officer             42
 
Jean Reiczyk                        Corporate Vice President and General Manager, Solutions
                                      Business Group                                                 49
Bruce S. Taafe                      Vice President, International Field Operations                   55
 
Joan M. Wrabetz                     Vice President and General Manager, SAN Operations               39
</TABLE>
 
Mr. Weiss has served as Chairman of the Board, President and Chief Executive
Officer since May 23, 1996. He served as Chief Operating Officer of the Company
from March 1995 to May 1996, Executive Vice President of Systems Development
from January 1993 to March 1995, Senior Vice President of Marketing and Program
Management Process from June 1992 to January 1993, and Corporate Vice President
of Market Planning from August 1991 to June 1992. Mr. Weiss joined the Company
in February 1991 as Staff Vice President.
 
Mr. Perez was appointed to serve as Executive Vice President and Chief Operating
Officer in January 1999. Prior to this appointment, from October 1997 to January
1999, he served as Executive
 
                                       14
<PAGE>   15
 
Vice President, Enterprise Operations. From June 1996 to October 1997, he served
as Corporate Vice President and General Manager, Enterprise DASD and
International Manufacturing. From November 1995 to June 1996, Mr. Perez served
as Corporate Vice President Worldwide Manufacturing. Mr. Perez was appointed
Corporate Vice President in November 1994 and has been employed by the Company
in various other capacities since 1979.
 
Mr. Dumas joined the Company in August 1998, and serves as Corporate Vice
President and General Counsel. From April 1995 to August 1998, Mr. Dumas served
as Vice President and General Counsel of Symbios, Inc. He served as Group
Counsel-Work Stations Division at Silicon Graphics, Inc., a computer products
company, from 1992 to 1995.
 
Mr. Kocol was appointed Corporate Vice President and Chief Financial Officer in
December 1998. Prior to this appointment, from 1996 to 1998, he served as Vice
President of Financial Planning and Operations. In 1991, Mr. Kocol joined the
Company's financial group located in Colorado, as Director of Financial
Operations. He was subsequently promoted to Director of Worldwide Field
Operations Finance and Administration. Mr. Kocol has been employed by the
Company in various other capacities since 1980.
 
Mr. Arnold was appointed Vice President and Corporate Controller in April 1997.
From November 1995 to April 1997, he served as Director of Worldwide
Consolidation and Reporting. Mr. Arnold served as Manager of External Reporting
from April 1991 to November 1995. Mr. Arnold has been employed by the Company in
various other capacities since 1989.
 
Mr. Archibald joined the Company in July 1998, and serves as Vice President and
General Manager, Enterprise Disk Business Group. Prior to joining the Company in
1998, he served in various management positions at Hewlett-Packard Company, a
computer and imaging products company, most recently from 1993 to 1998, he
served as Information Storage Group, Worldwide Marketing Manager.
 
Mr. Francis was appointed Vice President and General Manager of Nearline
Business Group in February 1997. From September 1993 to February 1997, Mr.
Francis served as Vice President of the Nearline Business, and from August 1992
to September 1993, served as Director of Strategic Planning. Mr. Francis has
been employed by the Company in various other capacities since 1976.
 
Mr. Reiczyk was appointed Corporate Vice President and General Manager,
Solutions Business Group, in February 1999, and served as Vice President and
General Manager, Solutions Business Group from September 1997 to January 1999.
Prior to joining the Company, Mr. Reiczyk served as Senior Vice President and
Corporate Quality Officer at Global One, from March 1997 to September 1997. From
1994 to February 1997, he served as Vice President, Value Added Services, at
AT&T Europe, a unit of AT&T, a telecommunications company.
 
Mr. Taafe was appointed Vice President, International Field Operations, in 1997.
From 1995 to 1997, he served as Vice President, Asia Pacific Field Operations,
and from 1994 to 1995, he was located in the Company's United Kingdom office and
served as Vice President, International Operations.
 
Ms. Wrabetz joined the Company in May 1998, and serves as Vice President and
General Manager, SAN Operations. Prior to joining the Company, from 1996 to
April 1998, she served as Vice President of Tricord Systems Corp., a PC server
vendor, and from 1990 to 1995, she served as Chief Executive Officer and
President of Aggregate Computing Corp., a software company.
 
                                       15
<PAGE>   16
 
                                    PART II
 
ITEM 5.  MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS
 
The common stock of Storage Technology Corporation is traded on the New York
Stock Exchange under the symbol STK. The table below reflects the high and low
closing sales prices of the common stock on the New York Stock Exchange
composite tape as reported by The Wall Street Journal during each fiscal quarter
of 1998 and 1997. The amounts shown reflect adjustments for the 2-for-1 stock
split effected in the form of a 100% stock dividend that was completed on June
26, 1998. On December 25, 1998, there were 11,719 record holders of common stock
of StorageTek.
 
<TABLE>
<CAPTION>
1998                                       High                            Low
- --------------------------------------------------------------------------------
<S>                                       <C>                            <C>
First Quarter                             $37.750                        $28.657
Second Quarter                             43.938                         37.719
Third Quarter                              50.188                         21.750
Fourth Quarter                             39.625                         21.625
</TABLE>
 
<TABLE>
<CAPTION>
1997                                       High                            Low
- --------------------------------------------------------------------------------
<S>                                       <C>                            <C>
First Quarter                             $26.938                        $18.625
Second Quarter                             23.063                         17.000
Third Quarter                              27.000                         22.563
Fourth Quarter                             33.188                         24.000
</TABLE>
 
Dividends
- ---------
 
StorageTek has never paid cash dividends on its common stock. The Company
currently plans to continue to retain future earnings for use in its business.
The Company's existing credit agreements contain provisions restricting the
payment of cash dividends.
 
                                       16
<PAGE>   17
 
ITEM 6. SELECTED FINANCIAL DATA
 
The following data, insofar as it relates to the three fiscal years 1996 through
1998 (except for the 1996 Balance Sheet Data), has been derived from the
consolidated financial statements appearing elsewhere herein, including the
Consolidated Balance Sheet as of December 25, 1998, and December 26, 1997, and
the related Consolidated Statement of Operations for each of the three years in
the period ended December 25, 1998, and notes thereto. The data, insofar as it
relates to the Balance Sheet Data as of December 27, 1996, December 29, 1995,
and December 30, 1994, and the Statement of Operations Data for the fiscal years
1995 and 1994, has been derived from the historical financial statements of the
Company for such periods, restated as appropriate to reflect mergers accounted
for as poolings of interests.
 
The following table data (in thousands of dollars, except per share amounts)
should be read in conjunction with the consolidated financial statements and
notes thereto.
 
<TABLE>
<CAPTION>
                                                                  YEAR ENDED DECEMBER
                                             --------------------------------------------------------------
                                                1998         1997         1996         1995         1994
                                             --------------------------------------------------------------
<S>                                          <C>          <C>          <C>          <C>          <C>
STATEMENT OF OPERATIONS DATA
Revenue                                      $2,258,222   $2,144,656   $2,039,550   $1,929,485   $1,871,350
Cost of revenue                               1,217,812    1,171,530    1,192,777    1,217,622    1,186,942
                                             ----------   ----------   ----------   ----------   ----------
  Gross profit                                1,040,410      973,126      846,773      711,863      684,408
Research and product development costs          234,677      209,526      176,422      187,275      206,083
Selling, general, administrative and other
 income and expense, net                        492,928      472,839      444,870      445,889      425,490
Restructuring and other charges                                                        212,207(b)     8,000(c)
                                             ----------   ----------   ----------   ----------   ----------
  Operating profit (loss)                       312,805      290,761      225,481     (133,508)      44,835
Interest income, net                              6,943       25,356        1,211        8,978        6,103
                                             ----------   ----------   ----------   ----------   ----------
  Income (loss) before income taxes and
   extraordinary item                           319,748      316,117      226,692     (124,530)      50,938
Provision for income taxes                     (121,500)     (84,300)     (55,900)     (17,800)     (18,900)
                                             ----------   ----------   ----------   ----------   ----------
  Income (loss) before extraordinary item       198,248      231,817      170,792     (142,330)      32,038
Extraordinary gain, net of taxes                                            9,535
                                             ----------   ----------   ----------   ----------   ----------
  Net income (loss)                          $  198,248   $  231,817   $  180,327   $ (142,330)  $   32,038
                                             ----------   ----------   ----------   ----------   ----------
                                             ----------   ----------   ----------   ----------   ----------
Basic earnings (loss) per common share: (a)
  Income (loss) before extraordinary item    $     1.91   $     1.93   $     1.52   $    (1.46)  $     0.19
  Net income (loss)                                1.91         1.93         1.61        (1.46)        0.19
Diluted earnings (loss) per common share: (a) 
  Income (loss) before extraordinary item    $     1.86   $     1.89   $     1.43   $    (1.46)  $     0.19
  Net income (loss)                                1.86         1.89         1.50        (1.46)        0.19
 
BALANCE SHEET DATA
Working capital                              $  538,331   $  661,206   $  724,171   $  425,351   $  501,065
Total assets                                  1,842,944    1,740,017    1,884,276    1,888,629    2,144,458
Total debt                                      295,655       22,391      155,257      449,222      464,690
Stockholders' equity                            999,576    1,112,503    1,180,983      962,833    1,265,285
</TABLE>
 
- ---------------
 
(a)Earnings per share data has been restated to reflect the effect of the
   2-for-1 stock split in the form of a stock dividend on June 26, 1998.
(b)In 1995, the Company recognized restructuring charges of $167,175,000,
   litigation settlement charges of $30,680,000, and merger and consolidation
   charges of $14,352,000.
(c)In 1994, the Company recognized restructuring charges of $8,000,000.
 
                                       17

<PAGE>   18
 
ITEM 7.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
         OF OPERATIONS
 
ALL ASSUMPTIONS, ANTICIPATIONS, EXPECTATIONS AND FORECASTS CONTAINED IN THE
FOLLOWING DISCUSSION REGARDING THE COMPANY'S FUTURE PRODUCT AND BUSINESS PLANS,
FINANCIAL RESULTS, PERFORMANCE AND EVENTS ARE FORWARD-LOOKING STATEMENTS. THE
COMPANY'S ACTUAL RESULTS MAY DIFFER MATERIALLY BECAUSE OF A NUMBER OF RISKS AND
UNCERTAINTIES. SOME OF THESE RISKS ARE DETAILED BELOW IN "RISK FACTORS THAT MAY
AFFECT FUTURE RESULTS" AND ELSEWHERE IN THIS FORM 10-K.
 
STATEMENTS MADE HEREIN ARE ACCURATE ONLY AS OF THE DATE OF FILING THIS FORM 10-K
WITH THE SECURITIES AND EXCHANGE COMMISSION AND MAY BE RELIED UPON ONLY AS OF
THAT DATE. THE COMPANY DISCLAIMS ANY OBLIGATION TO UPDATE INFORMATION ON
FORECASTS CONTAINED HEREIN, EXCEPT AS MAY BE OTHERWISE REQUIRED BY LAW.
 
GENERAL
- -------
 
The Company reported net income for the year ended December 25, 1998, of $198.2
million on revenue of $2.26 billion, compared to net income for the year ended
December 26, 1997, of $231.8 million on revenue of $2.14 billion and net income
for the year ended December 27, 1996, of $180.3 million on revenue of $2.04
billion.
 
Revenue increased 5% in 1998, compared to 1997, primarily due to increases in
revenue from storage services and storage management software. Revenue from
storage products increased slightly in 1998 as compared to 1997. Gross profit
margins increased to 46% in 1998 as compared to 45% in 1997, primarily due to
increased sales of higher-margin storage management software. The increased
margins from storage management software were partially offset by decreased
margins from storage services. Net income decreased 15% in 1998 compared to
1997, due to an increase in the effective tax rate.
 
Revenue increased 5% in 1997 compared to 1996, due to revenue increases in all
segments of the Company's business. Revenue during 1997 was reduced by
unfavorable foreign currency exchange rate movements, particularly in Europe.
Gross profit margins increased to 45% in 1997 as compared to 42% in 1996,
primarily due to increased margins associated with storage products and storage
management software. This increase in margins was partially offset by decreased
margins from storage services.
 
The Company's future revenue and operating results are significantly dependent
upon effectively managing the introduction of new products and services;
developing new applications for its products; the successful development of new
distribution channels; the successful implementation of the new storage area
network (SAN) strategy; and managing operating expenses. For the discussion of
these and other risk factors, see "Risk Factors That May Affect Future Results"
below.
 
The Company's cash and short-term investments balances decreased $101.6 million
during 1998 due primarily to cash payments of $359.4 million associated with the
Company's common stock repurchase programs and net investments in property,
plant and equipment of $116.9 million. These payments were partially funded by
net borrowings under the Company's credit facilities of $273.2 million, cash
generated from operating activities of $88.1 million, and a reduction of
short-term investments of $77.3 million. Cash generated from operating
activities decreased to $88.1 million in 1998, as compared to $446.7 million in
1997, primarily as a result of increased cash paid to suppliers and employees.
The increased cash paid to suppliers and employees was primarily a result of
cash paid for additional inventory on hand at December 25, 1998, for new product
ramp-up, and cash payments in 1998 to reduce accrued liabilities outstanding at
December 26, 1997. The accrued liabilities at December 26, 1997, were higher
than at December 25, 1998, primarily as a result of employee bonus and profit
sharing, and restructuring accruals. The Company's cash balances decreased
$132.1 million during 1997. Net cash flows generated from operations in 1997 of
$446.7 million were more than offset by the repurchase of 18.3 million shares of
the Company's common stock at a cost of $485.0 million,
 
                                       18
<PAGE>   19
 
investments in property, plant and equipment of $65.9 million and an increase in
short-term investments of $48.1 million.
 
The following table, stated as a percentage of total revenue, presents
Consolidated Statement of Operations information and revenue by segments.
 
<TABLE>
<CAPTION>
                                                               Year Ended December
                                                   -------------------------------------------
                                                   1998             1997             1996
                                                   -------------------------------------------
<S>                                                <C>              <C>              <C>   
Storage products:
  Tape products                                     43.1%            45.0%            46.7%
  Disk products                                     20.6             20.6             18.2
  Network products                                   3.6              4.1              6.3
                                                   -----            -----            -----
          Total storage products                    67.3             69.7             71.2
Storage services                                    28.1             27.2             26.6
Storage management software                          4.6              3.1              2.2
                                                   -----            -----            -----
          Total revenue                            100.0            100.0            100.0
Cost of revenue                                     53.9             54.6             58.5
                                                   -----            -----            -----
          Gross profit                              46.1             45.4             41.5
Research and product development costs              10.4              9.8              8.6
Selling, general, administrative and other income
  and expense, net                                  21.8             22.0             21.8
                                                   -----            -----            -----
          Operating profit                          13.9             13.6             11.1
Interest income, net                                 0.3              1.1
                                                   -----            -----            -----
          Income before income taxes and
            extraordinary item                      14.2             14.7             11.1
Provision for income taxes                          (5.4)            (3.9)            (2.7)
                                                   -----            -----            -----
          Income before extraordinary item           8.8             10.8              8.4
Extraordinary gain, net of income taxes                                                0.4
                                                   -----            -----            -----
          Net income                                 8.8%            10.8%             8.8%
                                                   -----            -----            -----
                                                   -----            -----            -----
</TABLE>
 
REVENUE
- -------
 
STORAGE PRODUCTS
 
The Company's storage products revenue includes sales of tape, disk, and network
products. Revenue generated from storage products increased 2% in 1998, as
compared to 1997, and 3% in 1997, as compared to 1996. These increases are
primarily due to increases in revenue from disk products.
 
TAPE PRODUCTS
 
Tape product revenue increased 1% in 1998, as compared to 1997. Revenue from
TimberWolf(TM), a family of automated tape libraries designed for the
client-server market; and PowderHorn(R) 9310, an automated cartridge system
library; increased in 1998, as compared to 1997, but was offset by decreased
revenue from TimberLine(R)- 9490, a 36-track cartridge subsystem, and earlier
generation tape products. The decrease in TimberLine revenue is primarily the
result of an increase in pricing pressure and delays during the second half of
1998 in customer purchase decisions associated with the evaluation of the
Company's new 9840, a high-performance tape drive. The 9840 tape drive became
generally available and provided initial revenue contribution in December 1998.
 
Tape product revenue increased 1% in 1997, as compared to 1996, primarily due to
increased revenue from TimberWolf and RedWood(R) SD-3, a high-capacity cartridge
subsystem. This increase was offset by decreased revenue from earlier generation
tape products, TimberLine, and PowderHorn. The
 
                                       19
<PAGE>   20
 
decrease in TimberLine revenue was primarily a result of an increase in pricing
pressure. Tape product revenue was unfavorably affected by foreign currency
exchange rate movements during 1997.
 
DISK PRODUCTS
 
Disk product revenue increased 5% in 1998, as compared to 1997, primarily due to
increased revenue from the OPENstorage(TM) Disk subsystem, a family of disk
products for the client-server market. While unit sales of the Iceberg(R) disk
storage product for the mainframe market increased in 1998 as compared to 1997,
the revenue remained unchanged due to price decreases provided for under the
terms of an OEM agreement with IBM. A significant portion of the Company's total
revenue in 1998 was derived from sales of disk products to IBM. See "Risk
Factors That May Affect Future Results -- Dependence on IBM," for discussion of
the risks associated with IBM.
 
Disk product revenue increased 20% in 1997, as compared to 1996, primarily due
to increased revenue from disk products sold to IBM under the OEM agreement, and
OPENstorage Disk subsystems.
 
NETWORK PRODUCTS
 
Network product revenue decreased 5% in 1998, as compared to 1997, and decreased
32% in 1997 as compared to 1996. The decreases are primarily due to reduced
revenue from the earlier generation connectivity products.
 
Future revenue growth in the Company's storage products is significantly
dependent upon increased manufacturing volumes for the new 9840 tape drive,
developing new business solution applications for storage products, developing
new products and distribution channels for the client-server disk market,
increasing the direct sales of Iceberg, and successfully implementing the SAN
strategy. See "Risk Factors That May Affect Future Results -- New Products,
Markets and Distribution Channels," for discussion of the risks associated with
the manufacture of new products.
 
STORAGE SERVICES
 
Storage services include support service revenue from the Company's and third
party storage products, as well as integration service revenue associated with
new applications, IT business consulting and technology services revenue.
Storage services revenue increased 9% in 1998, as compared to 1997, primarily
due to an increase in storage products under maintenance contracts and growth in
the multi-vendor support services area.
 
Storage services revenue increased 8% in 1997, as compared to 1996, primarily
due to an increase in consulting services revenue. The revenue from product
maintenance was relatively unchanged in 1997 as compared to 1996.
 
Future revenue growth from storage services is significantly dependent on the
Company's initiative to drive consulting services as part of a packaged solution
with products and software to address customer information storage requirements.
Storage services revenue is also dependent on the Company's continued success in
capturing the maintenance business for its products as the indirect sales
channel expands and the Company focuses on the client-server market.
 
STORAGE MANAGEMENT SOFTWARE
 
Storage management software revenue increased 58% in 1998 as compared to 1997,
primarily due to increased revenue from SnapShot(TM), software designed for use
with the Company's Iceberg product; and Virtual Storage Manager (VSM), a
software driven data storage management solution designed to improve
performance, cartridge utilization, and overall storage management. The increase
in SnapShot revenue was primarily due to increased OEM sales to IBM. VSM became
available and brought initial revenue contribution in December 1998. Storage
management software revenue increased 47% in 1997, as compared to 1996,
primarily due to increased sales of SnapShot.
 
                                       20
<PAGE>   21
 
Future revenue growth from storage management software is significantly
dependent upon gaining market acceptance for VSM. There can be no assurances
that the Company will be successful in gaining market acceptance for VSM. In
addition, the Company must develop new distribution channels for SnapShot, which
is currently distributed primarily by IBM under an OEM agreement. See "Risk
Factors That May Affect Future Results -- Dependence on IBM," for discussion of
the risks associated with IBM.
 
GROSS PROFIT
- ------------
 
Gross profit margins increased to 46% in 1998, as compared to 45% in 1997,
primarily due to the increased sales of higher-margin storage management
software and improved efficiencies associated with the manufacture of storage
products. This increase in gross profit was partially offset by reduced margins
associated with storage services. The decrease in storage service margins is due
primarily to increased pricing pressures associated with maintenance of storage
products in the client-server market and reduced margins associated with the
Company's consulting services.
 
Gross profit margins increased to 45% in 1997, as compared to 42% in 1996,
primarily due to increased manufacturing volumes and improved manufacturing
efficiencies associated with storage products, and increased sales of
higher-margin storage management software. This increase was partially offset by
a decrease in gross margins associated with storage services. The decrease in
storage services gross margins reflects the reduced margins associated with the
Company's consulting services. Gross margins in 1997, as compared to 1996, also
benefited from a change in the classification of advanced manufacturing costs of
approximately $34.7 million, which are included within research and product
development costs in the 1997 Consolidated Statement of Operations.
 
The markets for most of the Company's products and services are subject to
intense price competition. In addition to the price competition in the markets,
the Company is subject to scheduled price reductions under the terms of the OEM
agreement with IBM. The Company anticipates that price competition for its
products will continue to be a major factor. Gross margin as a percent of
revenue is expected to be impacted as the Company increases its market presence
in the lower-margin client-server market and as a result of incremental start-up
costs associated with the new products introduced in the fourth quarter of 1998.
The Company's ability to sustain or improve gross margins is significantly
dependent upon its ability to continue to reduce manufacturing costs and to
continue to increase sales of higher-margin storage management software. Storage
product and storage management software gross margins may be affected in future
periods by inventory reserves and writedowns resulting from rapid technological
changes and delays in gaining market acceptance for new products. Storage
services margins may be adversely affected in the future as a result of
increased competition and lower margins associated with the Company's consulting
services.
 
RESEARCH AND PRODUCT DEVELOPMENT
- --------------------------------
 
Research and product development expenditures increased 12% in 1998, as compared
to 1997. The increased investment in new development activities during 1998 was
partially offset by the receipt of approximately $50 million of research and
product development funding from third-parties. Research and product development
expenditures increased 19% in 1997, as compared to 1996. Research and product
development costs for 1997, as compared to 1996, include incremental costs of
approximately $34.7 million associated with a change in the classification of
costs associated with certain advanced manufacturing activities that were
previously included within cost of revenue. Increased investments during 1997 in
developing new products were offset by the receipt of approximately $46 million
of research and product development funding from third-parties.
 
The Company's research and development costs are expected to continue to
increase in 1999 as a result of the significant product development activities
currently under way and an anticipated decline in the level of funding received
from third-parties in 1999, as compared to 1998. The Company anticipates that
the expected increase in research and product development expense as a result of
the decreased
 
                                       21
<PAGE>   22
 
funding, will be partially offset due to reduced spending as the Company is
consolidating various research and product development efforts.
 
SELLING, GENERAL, ADMINISTRATIVE AND OTHER
- ------------------------------------------
 
Selling, general, administrative and other income and expense (SG&A) increased
4% in 1998, as compared to 1997. The increase is primarily because of spending
on internal business and financial information systems, selling expenses
associated with the Company's storage product sales and branding initiatives.
The increase was partially offset by reduced accruals for employee bonus and
profit-sharing payments in 1998, as compared to 1997, as the Company did not
attain certain financial goals in 1998. SG&A increased 6% in 1997, as compared
to 1996, primarily because of spending on internal business and financial
information systems, employee profit-sharing and bonus expenses associated with
increased earnings levels, and selling expenses associated with the Company's
storage product sales initiatives. SG&A during 1997 also includes gains realized
on the sale of accounts receivable of $33.8 million in 1997.
 
Gains and losses associated with foreign currency transactions and translation
adjustments, net of associated hedging results, are included in SG&A and
aggregated a net loss of $0.4 million for 1998, compared to a net gain of $0.5
million in 1997 and a net loss of $0.5 million in 1996. See "International
Operations" and "Market Risk Management/Foreign Currency Exchange Risk," for
further discussion of the foreign exchange risks associated with the Company's
international operations and the related foreign currency hedging activities.
 
INTEREST INCOME AND EXPENSE
- ---------------------------
 
Interest income decreased 49% in 1998, as compared to 1997, primarily as a
result of a decrease in cash available for investment. Interest expense
increased 77% in 1998, as compared to 1997, due to borrowing under the Company's
unsecured credit facilities. See "Liquidity and Capital Resources -- Available
Financing Lines," for further discussion of the Company's credit facilities.
Interest income increased 10% in 1997, as compared to 1996, primarily as a
result of an increase in cash available for investment. Interest expense
decreased 82% in 1997, as compared to 1996, as the Company redeemed all of its
outstanding convertible debentures.
 
INCOME TAXES
- ------------
 
The Company utilized substantially all of its remaining United States net
operating loss and tax credit carryforwards during 1997, which resulted in an
increase in the Company's effective tax rate from 27% in 1997, to 38% in 1998.
 
Statement of Financial Accounting Standards (SFAS) No. 109 requires that
deferred income tax assets be recognized to the extent realization of such
assets is more likely than not. Based on the currently available information,
management has determined that the Company will more likely than not realize
$130.6 million of deferred income tax assets as of December 25, 1998. The
Company's valuation allowance of approximately $25.9 million as of December 25,
1998, relates principally to net deductible temporary differences and net
operating loss carryforwards associated with the Company's foreign subsidiaries.
 
LIQUIDITY AND CAPITAL RESOURCES
- -------------------------------
 
WORKING CAPITAL
 
The Company's cash and short-term investments balances decreased $101.6 million
during 1998 due primarily to cash payments of $359.4 million associated with the
Company's common stock repurchase programs and net investments in property,
plant and equipment of $116.9 million. These payments were partially funded by
net borrowings under the Company's credit facilities of $273.2 million, cash
generated from operating activities of $88.1 million, and a reduction of
short-term investments of
 
                                       22
<PAGE>   23
 
$77.3 million. Cash generated from operating activities decreased to $88.1
million in 1998, as compared to $446.7 million in 1997, primarily as a result of
increased cash paid to suppliers and employees. The increased cash paid to
suppliers and employees was primarily a result of cash paid for additional
inventory on hand at December 25, 1998, for new product ramp-up, and cash
payments in 1998 to reduce accrued liabilities outstanding at December 26, 1997.
The accrued liabilities at December 26, 1997, were higher than at December 25,
1998, primarily as a result of employee bonus and profit sharing, and
restructuring accruals.
 
The Company's cash balances decreased $132.1 million from December 27, 1996, to
December 26, 1997. Cash generated from operations of $446.7 million during 1997
was more than offset by the cash used to repurchase 18.3 million of the
Company's common stock at a cost of $485.0 million. Net purchases of property,
plant and equipment of $65.9 million and an increase in short-term investments
of $48.1 million also contributed to the decrease in cash balances during 1997.
 
AVAILABLE FINANCING LINES
 
The Company has a $350 million unsecured revolving credit facility (the $350
million Revolver) which expires in October 2001. The credit limit available
under the $350 million Revolver will be reduced by $12.5 million on the last day
of each calendar quarter with the first reduction beginning December 31, 1998.
The interest rates under the $350 million Revolver depend on the type of advance
selected. The basic advance rate is not less than the London Interbank Offered
Rate (LIBOR) plus .625% (approximately 6.25% as of December 25, 1998). The
interest rate on the outstanding borrowings under the $350 million Revolver as
of December 25, 1998, has varied from approximately 6.04% to 7.75%. As of
December 25, 1998, the Company had borrowings of $195.0 million and had issued
letters of credit for approximately $800,000 under the $350 million Revolver.
The remaining available credit under the $350 million Revolver as of December
25, 1998, was approximately $154.2 million. The $350 million Revolver contains
certain financial and other covenants, including restrictions on the Company's
payment of cash dividends on its common stock.
 
The Company has a financing agreement with a bank that provides for the sale of
promissory notes in the principal amount of up to $140 million at any one time.
The agreement, which expires in January 2000, provides for commitments by the
bank to purchase promissory notes denominated in a number of foreign currencies.
As of December 25, 1998, the Company had outstanding borrowings of $81.7 million
and had committed to borrowings between January 1999 and December 1999 in the
cumulative principal amount of approximately $364.7 million. The notes must be
repaid only to the extent of future revenue and obligations under the agreement
are not cancelable by the Company or the bank. Gains and losses associated with
changes in the underlying foreign currencies are deferred during the commitment
period and recognized as an adjustment to the revenue supporting the note
repayment at the time the bank purchases the promissory notes. The promissory
notes, together with accrued interest, are payable in U.S. dollars within 40
days from the date of issuance and bear interest at rates no less than the LIBOR
plus 0.35% (approximately 5.98% as of December 25, 1998). Under the terms of the
agreement, the Company is required to comply with certain covenants and, under
certain circumstances, may be required to maintain a collateral account,
including cash and qualifying investments, in an amount not less than the
outstanding promissory notes.
 
In January 1999, the Company entered into an additional $150 million unsecured
revolving credit facility (the $150 million Revolver) which expires in January
2000. The interest rates under the $150 million Revolver depend on the type of
advance selected. The basic advance rate is not less than the LIBOR plus 1.00%.
The $150 million Revolver contains certain financial and other covenants,
including restrictions on the payment of cash dividends on the Company's common
stock.
 
The Company intends to continue to commit substantial working capital to
research and product development projects, and the rollout of new products and
services. The Company may invest in or acquire complementary businesses,
products or technologies as market and business conditions warrant. The Company
believes it has adequate working capital and financing capabilities to meet its
 
                                       23
<PAGE>   24
 
anticipated operating and capital requirements for the next 12 months. Over the
longer term, the Company may choose to fund these activities through the
issuance of additional equity or debt financing. The issuance of equity or
convertible debt securities could result in dilution to the Company's
stockholders. There can be no assurance that such additional financing, if
required, can be completed on terms acceptable to the Company.
 
TOTAL DEBT-TO-TOTAL CAPITALIZATION
 
The Company's total debt-to-capitalization ratio increased from 2% as of
December 26, 1997, to 23% as of December 25, 1998, primarily due to short-term
borrowings of $276.7 million under the Company's credit facilities, coupled with
a decrease in stockholders' equity as a result of the Company's common stock
repurchases. See "Liquidity and Capital Resources -- Working Capital" and Note 8
of NOTES TO CONSOLIDATED FINANCIAL STATEMENTS for further discussion of the
Company's common stock repurchase programs.
 
INTERNATIONAL OPERATIONS
- ------------------------
 
During 1998, 1997 and 1996, approximately 37%, 34% and 41%, respectively, of the
Company's revenue was generated by its international operations. The decrease in
international revenue during 1997 is principally because of a shift in sales of
Iceberg and SnapShot from the Company's worldwide direct sales channel to OEM
sales to IBM in the United States. The Company also sells other products and
software through domestic indirect distribution channels that have end-user
customers located outside the United States. The Company expects that it will
continue to generate a significant portion of its revenue from international
operations in the future. The majority of the Company's international operations
involve transactions denominated in the local currencies of countries within
Western Europe, principally Germany, France and the United Kingdom; Japan;
Canada and Australia. An increase in the exchange value of the United States
dollar reduces the value of revenue and profits generated by the Company's
international operations. As a result, the Company's operating and financial
results can be materially affected by fluctuations in foreign currency exchange
rates. In an attempt to mitigate the impact of foreign currency fluctuations,
the Company employs a foreign currency hedging program. See "Market Risk
Management/Foreign Currency Exchange Risk," below.
 
The Company's international business may be affected by changes in demand
resulting from global and localized economic and business conditions. The
Company is subject to the risks of conducting business outside the United
States, including changes in, or impositions of, legislative or regulatory
requirements, tariffs, quotas, difficulty in obtaining export licenses,
potentially adverse taxes, the burdens of complying with a variety of foreign
laws and other factors outside the Company's control. There can be no assurances
these factors will have no material adverse effect on the Company's business or
financial results in the future.
 
MARKET RISK MANAGEMENT/FOREIGN CURRENCY EXCHANGE RISK
- -----------------------------------------------------
 
The market risk inherent in the Company's financial instruments relates
primarily to changes in foreign currency exchange rates. To mitigate the impact
of foreign currency fluctuations, the Company seeks opportunities to reduce
exposures through financing activities. Foreign currency options and forward
exchange contracts are also used to reduce foreign currency exposures. All
foreign currency options and forward exchange contracts are authorized and
executed pursuant to the Company's policies. Foreign currency options and
forward exchange contracts that are designated as and qualify as hedging
transactions are subject to hedge accounting treatment. The Company does not
hold or issue derivatives or any other financial instruments for trading
purposes. See Note 12 to the NOTES TO CONSOLIDATED FINANCIAL STATEMENTS for
further discussion of the Company's financial instruments and off-balance-sheet
risks.
 
The Company has a financing agreement with a bank which provides for commitments
by the bank to purchase promissory notes denominated in a number of foreign
currencies. Gains and losses
 
                                       24
<PAGE>   25
 
associated with changes in the underlying foreign currencies are deferred during
the commitment period and recognized as an adjustment to the revenue supporting
the note repayment at the time the bank purchases the promissory notes. See
"Available Financing Lines," for a description of the financing agreement.
 
The Company periodically utilizes foreign currency options, generally with
maturities of less than one year, to hedge a portion of its exposure to
exchange-rate fluctuations in connection with anticipated revenue from its
international operations. Gains and losses associated with the options are
deferred and recognized as an adjustment to the underlying revenue transactions.
To the extent an option is terminated or ceases to be effective as a hedge, any
gains and losses as of that date are deferred and recognized as an adjustment to
the underlying revenue transaction.
 
The Company also utilizes forward exchange contracts, generally with maturities
of less than two months, to hedge its exposure to exchange-rate fluctuations
associated with monetary assets and liabilities held in foreign currencies and
anticipated revenues from its international operations. The carrying amounts of
these forward exchange contracts equal their fair value as the contracts are
adjusted at each balance sheet date for changes in exchange rates. Gains and
losses on the forward exchange contracts used to hedge monetary assets and
liabilities are recognized as incurred within SG&A on the Consolidated Statement
of Operations as adjustments to the foreign exchange gains and losses on the
translation of net monetary assets. Gains and losses on the forward contracts
used to hedge anticipated revenues are recognized as incurred as adjustments to
revenue.
 
A hypothetical 10% adverse movement in foreign exchange rates applied to the
Company's foreign currency exchange rate sensitive instruments held as of
December 25, 1998, and as of December 26, 1997, would result in a hypothetical
loss of approximately $59.2 million and $26.6 million, respectively. The
increase in the hypothetical loss for 1998 is primarily due to an increase in
committed borrowings under the financing agreement. These hypothetical losses do
not take into consideration the Company's underlying international operations.
The Company anticipates that any hypothetical loss associated with the Company's
foreign currency exchange rate sensitive instruments would be offset by gains
associated with its underlying international operations.
 
The Company had outstanding borrowings under its $350 million Revolver at
December 25, 1998. The interest rate on these borrowings is dependent on the
LIBOR which is sensitive to interest rate changes. A hypothetical 10% adverse
movement in the LIBOR applied to the borrowings would not have a material
adverse effect on the Company's results of operations, cash flows, or financial
position in 1999.
 
RISK FACTORS THAT MAY AFFECT FUTURE RESULTS
- -------------------------------------------
 
NEW PRODUCTS, MARKETS AND DISTRIBUTION CHANNELS
 
The Company's results of operations and competitive strength depend upon its
ability to successfully develop, manufacture and market innovative new products
and software. Short product life cycles are inherent to the high-technology
market. The Company must devote significant resources to research and product
development projects and effectively manage the risks inherent in new product
transitions. Developing new technology and products is complex and involves
uncertainties. Delays in product development, manufacturing, or in customer
purchasing decisions can make product transitions difficult. In addition,
product transitions make the process of production and inventory planning more
difficult as the Company must accurately anticipate product mix and
configuration demands, and accurately forecast inventory levels. The Company has
experienced product development delays in the past that adversely affected the
Company's financial results and competitive position. There can be no assurances
that the Company will be able to successfully manage the development and
introduction of new products and software in the future.
 
In December 1998, the Company's new 9840 tape drive and VSM software became
available. The Company's financial results in 1999 are significantly dependent
on increased manufacturing capacity and volumes for the 9840 tape drive and
gaining market acceptance for VSM. The manufacture of new
 
                                       25
<PAGE>   26
 
products involves integrating complex designs and processes, and collaborating
with suppliers of key components from a sole-source supplier. A design flaw or
the failure to obtain sufficient quantities of key components could adversely
affect the Company's operating and financial results.
 
The Company historically has generated a significant portion of its revenue and
operating profits from the mainframe market. While storage capacity in the
mainframe market continues to increase, the rate of revenue growth has slowed as
a result of significant price competition. The Company's future financial
results are significantly dependent upon successfully competing in the rapidly
growing client-server and SAN markets. The Company currently is making
significant investments in developing new products, services and software for
these markets. There can be no assurances that the Company will be successful in
these activities.
 
The Company is increasing its reliance on indirect distribution channels, such
as OEMs, value-added resellers and value-added distributors. Indirect channel
activities make the Company's production and inventory planning more complex.
The Company's operating and financial results may be adversely affected in the
event an indirect partner establishes a new relationship with a competitor,
delays or changes its purchasing patterns, or experiences financial
difficulties. See "Dependence on IBM," below, for a discussion of issues
associated with the Company's distribution channels for its disk products.
 
DEPENDENCE ON IBM
 
In 1998, approximately 20% of the Company's total revenue was derived from sales
of products and software to IBM. The Company currently anticipates that in 1999,
IBM will serve as the primary distribution channel for Iceberg and SnapShot.
Under the worldwide, non-exclusive OEM agreement entered into during December
1997, IBM is not subject to any long-term volume purchase commitments. However,
IBM does receive volume-purchase discounts. Because of the volume-purchase
discounts included in the OEM agreement, the Company must continue to reduce
costs and expenses associated with manufacturing the products in order to
achieve the expected benefits of the agreement. The OEM agreement with IBM
includes certain indemnities by the Company. The Company has received notice
from IBM that it may seek indemnification from the Company in the event of an
adverse outcome of a pending patent infringement lawsuit.
 
In December 1997, the Company and IBM agreed to a settlement with the United
States Department of Justice (DOJ) concerning the Company's OEM relationship
with IBM. The terms of the settlement are contained in a consent decree which
was approved by the U.S. District Court for the District of Columbia on March
20, 1998. Under the terms of the consent decree, which expires in December 2002,
the Company must develop complementary domestic distribution channels for
delivery of certain disk products in 1999 or the Company could be subject to
limitations on its sales to IBM in the future.
 
The Company's OEM agreement with IBM expires in December 2000. IBM has indicated
that it is currently developing a competitive disk product. As a result, the
Company anticipates that IBM will reduce its purchasing patterns in the future
and may not extend the relationship with respect to future products and
software. The Company is currently ramping-up its direct sales channel to drive
increased sales of Iceberg and SnapShot during 1999. Failure to develop new
distribution channels for the Company's disk products and software could
adversely affect the Company's financial results.
 
COMPETITION
 
The markets for the Company's products, software and services are intensely
competitive and are subject to continuous, rapid technological change, frequent
product performance improvements, short product life cycles and aggressive
pricing. The Company believes that its ability to remain competitive includes
factors such as price and cost of the Company's and its competitors' product
offerings, the timing and success of new products and offerings, and new product
introductions by the Company's competitors. This competitive environment gives
rise to aggressive pricing strategies and puts pressure on the Company's gross
margins. The Company's competitors include, among others, Compaq Computer
Corporation, EMC Corporation, Hewlett-Packard Company, Hitachi Ltd., IBM, and
Sun
                                       26
<PAGE>   27
 
Microsystems, Inc. A number of the Company's competitors have significantly
greater market presence and financial resources than the Company. In the highly
competitive client-server market, a number of the Company's competitors are able
to offer customers a bundled server and storage product, which may provide them
a competitive advantage.
 
The Company expects to address some of these competitive issues through its SAN
strategy, which is capable of operating in a range of environments. The SAN
market is characterized by various alliances formed to promote industry
standards and deliver tested, interoperable SAN technology. The Company is a
member of several associations, which also include the Company's competitors. In
addition, a number of the Company's competitors in the product, services and
software markets have formed alliances with the stated objective of developing
interoperable SAN solutions. For example, 3Com Corporation, Legato Systems, Inc.
and MTI Technology Corporation have formed an alliance to deliver tested SAN
solutions. In the storage management software market, the Company competes with
vendors with which it has established partnerships, including that of Legato
Systems, Inc. and VERITAS Software Corporation. The Company also anticipates
that it will continue to establish distribution partnerships with other
equipment manufacturers, software vendors and service providers to address
competitive factors. There can be no assurances that the Company will be able to
successfully compete against other companies in these markets.
 
VOLATILITY OF STOCK PRICE; EARNINGS FLUCTUATIONS; RESTRUCTURING
 
The trading price of the Company's common stock is subject to significant
fluctuations. The Company's stock price may be impacted if the Company's revenue
or earnings fail to meet the expectations of the investment community. The
Company's stock price may also be affected by broad economic and market trends,
which are unrelated to the Company's performance.
 
The Company's financial and operating results may fluctuate from quarter to
quarter due to a number of reasons. In the past, the Company's results have
followed a seasonal pattern, which reflects the tendency of customers to make
their purchase decisions at the end of a calendar year. During any fiscal
quarter, a disproportionately large portion of total product sales are completed
in the last weeks and days of the quarter. These factors make the forecasting of
revenue inherently difficult. The Company plans its operating expenses on the
expected revenue and a revenue shortfall may cause results to be below
expectation in that period. A shortfall in revenue could be caused by a number
of factors, such as product and technology transitions announced by the Company
or its competitors, delays in the availability of new products, changes in the
purchasing patterns of the Company's customers and distribution partners, the
timing of customers' acceptance of certain solutions, rapid price erosion, or
global economic conditions.
 
The Company operates in the high-technology market which is inherently
susceptible to rapid changes in customer demand, technological advances, and
intense competition. In order to address these factors, the Company has
restructured its business in the past in order to re-align its business with the
market or establish a more cost efficient business structure. These
restructurings have resulted in expenses which have adversely affected reported
results of operations in the period the restructuring plan was adopted. There
can be no assurance that changes in the Company's business or in its industry
will not necessitate restructuring charges in the future.
 
SOLE SOURCE SUPPLIERS
 
The Company generally uses standard parts and components for its products and
believes that, in most cases, there are a number of alternative, competent
vendors for most of those parts and components. Many non-standard parts are
obtained from a single source or a limited group of suppliers; however, there
are other vendors who could produce these in satisfactory quantities after a
period of pre-qualification and product ramping. Certain of the Company's key
components and products are purchased from single suppliers that the Company
believes are currently the only manufacturers of the particular components that
meet the Company's qualification requirements and other specifications or
 
                                       27
<PAGE>   28
 
for which alternative sources of supply are not readily available. In
particular, Imation Corporation is a single source supplier for the 9840 tape
cartridges, and the Company is dependent upon Sumitomo Corporation for materials
used in the Company's tape drive recording heads. The Company is also dependent
on IBM for disk drives used in the Company's Iceberg product which are sold to
IBM under an OEM agreement and which the Company sells through its own direct
sales channel.
 
Certain of the Company's suppliers have experienced occasional technical,
financial or other problems in the past that have delayed deliveries, but
without significant effect on the Company. An unanticipated failure of any sole
source supplier to meet the Company's requirements for an extended period, or
the inability to secure comparable components in a timely manner, could result
in a shortage of key components, longer lead times, and reduced control over
production and delivery schedules. These factors could have a material adverse
effect on the Company's revenue and operating results. In the event a sole
source supplier was unable or unwilling to continue to supply components, the
Company would have to identify and qualify other acceptable suppliers. This
process could take an extended period, and no assurance can be given that any
additional source would become available or would be able to satisfy the
Company's production requirements on a timely basis.
 
INFORMATION SYSTEMS TRANSITION
 
The Company is in the process of replacing many of its internal information
systems with new, integrated information systems that are complex and that will
affect numerous operational, transactional, financial and reporting processes.
The transition to these new systems and processes is currently expected to be
completed during the third quarter of 1999, and involves a number of risks and
uncertainties. The Company must successfully manage the transfer of critical
information to the new systems, the integration of these systems, and the
implementation of associated process changes and employee training programs. The
Company intends to conduct extensive tests on these new systems and processes
prior to implementation; however, these tests may not be able to fully simulate
the transition phase and day-to-day operating environment. There can be no
assurance that the transition to the new information systems will cause no
interruptions in the Company's critical business processes. Failure to
successfully manage the transition could adversely affect the Company's
operating and financial results.
 
RISKS ASSOCIATED WITH THE YEAR 2000
 
The Company's product lines include information storage products and software
which collect, move, store, share, and protect data. In order to properly
process data, the Company's products must successfully manage and manipulate
data that includes both 20th and 21st century dates (Year 2000 Ready). The
Company has evaluated all of its currently offered products and software and
believes that they are Year 2000 Ready, provided they have been upgraded to
include all recommended engineering changes. However, there can be no assurance
that the Company's current products and software will be Year 2000 Ready in all
environments. In addition, the Company does not currently intend to develop
modifications to certain of its older products and software to make them Year
2000 Ready and is in the process of notifying the affected maintenance customers
of potential year 2000 problems with older products and software in order to
raise their awareness.
 
The Company generally believes that it is not legally responsible for costs
incurred by its customers to achieve their year 2000 readiness. Should the
Company's products and software fail to be Year 2000 Ready, however, the Company
may experience increased warranty and other customer satisfaction costs. Since
the year 2000 complications are not fully known and potential liability issues
are uncertain, the effect of the year 2000 on the Company's warranty costs and
financial results are not known at this time, but could be material in any given
quarter.
 
The Company is currently in the process of replacing many of its internal
information systems with new integrated information systems. See "Information
Systems Transition" above. These new systems are believed to be Year 2000 Ready.
The Company has also completed its assessment on its other critical
 
                                       28
<PAGE>   29
 
internal information systems which are not being replaced and has implemented
remediation programs on non-Year 2000 Ready systems. The Company has
substantially completed assessing critical non-information systems to determine
if they are Year 2000 Ready. The remediation programs for its information and
non-information systems that are not Year 2000 Ready are expected to be
substantially completed and tested by June 1999. The Company is currently
formulating contingency plans in the event of a system failure or delay.
 
The costs incurred to date directly related to the Company's remediation
activities total approximately $2 million. Future costs related to the
remediation activities are not expected to exceed approximately $3 million;
however, the amount may change as the year 2000 activities progress during 1999.
These remediation costs do not include the costs associated with the Company's
new information systems, which are expected to be Year 2000 Ready. The Company
has invested approximately $35 million in these new information systems as of
December 25, 1998, and the investment in these systems in 1999 is estimated to
be approximately $15 million. While the Company has not yet completed its year
2000 remediation and testing activities on all of its information and
non-information systems, the Company does not currently believe that these
activities will have a material adverse effect on the Company's operations and
financial results. Delays in implementing new internal information systems or a
failure to fully identify all year 2000 dependencies in the Company's systems
could have material adverse consequences, including delays in the delivery or
sale of the Company's products, or cause the Company to incur unexpected
additional costs.
 
The Company also has implemented a program to assess the possible effects on its
operations of the year 2000 readiness of key suppliers and vendors and is in the
process of receiving information concerning the suppliers' and vendors' Year
2000 Ready status. The Company's dependence on suppliers and vendors and,
therefore, on the proper functioning of their information systems and software,
means that their failure to address year 2000 issues could have a material
effect on the Company's operations and financial results. The Company
anticipates completing its assessment by the end of the first quarter of 1999.
Based on the results of the assessment, the Company may identify alternative
suppliers and vendors.
 
The effect that the year 2000 will have on customers' information technology
spending patterns is uncertain at this time. The potential adverse consequences
resulting from customers' year 2000 concerns could include, among others,
decreased spending on new information storage systems during 1999 as customers
complete their year 2000 testing activities and delays in customer purchase
decisions once customers have verified the year 2000 readiness of their
information systems. The demand for the Company's products worldwide could be
adversely affected in the event these patterns were to materialize, which could
have an adverse effect on the Company's operating and financial results.
 
EURO CONVERSION
 
Effective January 1, 1999, 11 of the 15 member countries of the European Union
adopted a single European currency, the euro, as their common legal currency.
Like many companies that operate in Europe, various aspects of the Company's
business and financial accounting will be affected by the euro conversion and
the transitions in the business environment resulting from the convergence of
currencies. The Company continues to evaluate the European pricing strategies
for its products and services and the implications of the euro conversion on its
contractual agreements, tax strategy and foreign currency risk management
strategy. The Company does not believe that the transition in the European
market resulting from the euro conversion will impact the competitiveness of its
products and services in Europe in the short-term, as significant price
transparency already exists. There can be no assurances, however, that the
conversion will not adversely affect the Company's pricing, tax, and currency
hedging strategies, or business systems and processes in the future.
 
                                       29
<PAGE>   30
 
ITEM 8.  FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
 
The financial statements and supplementary data listed in the Index to
Consolidated Financial Statements at Item 14 of this Form 10-K are incorporated
by reference into this Item 8 of Part II of this Form 10-K.
 
ITEM 9.  CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
         FINANCIAL DISCLOSURES
 
There have been no disagreements with the Company's independent accountants on
any matter of accounting principles or practices, financial statement
disclosure, or auditing scope or procedure or any reportable events.
 
                                    PART III
 
ITEM 10.  DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT
 
The information concerning the Company's directors required by this Item is
incorporated by reference from the information set forth under the caption
"Proposal 1 -- Election of Directors" in the Company's definitive Proxy
Statement concerning the Annual Meeting of Stockholders to be held May 20, 1999
(the "1999 Proxy Statement"). The information concerning the Company's executive
officers required by this Item is incorporated by reference to the information
set forth under the caption "Executive Officers of the Registrant," in Part I of
this Annual Report on Form 10-K.
 
The information concerning compliance with Section 16(a) of the Securities
Exchange Act of 1934, as amended, required by this Item is incorporated by
reference to the information set forth under the caption "Compensation of
Executive Officers -- Section 16(a) Beneficial Ownership Reporting Compliance"
in the 1999 Proxy Statement.
 
ITEM 11.  EXECUTIVE COMPENSATION
 
The information required by this Item is incorporated by reference to the
information under the captions "Compensation of Executive Officers" and
"Director Compensation" in the 1999 Proxy Statement.
 
ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
The information required by this Item is incorporated by reference to the
information under the caption "Voting Securities of the Company -- Security
Ownership" in the 1999 Proxy Statement.
 
ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
The information required by this Item is incorporated by reference to the
information under the captions "Director Compensation" and "Compensation of
Executive Officers" in the 1999 Proxy Statement.
 
                                       30
<PAGE>   31
 
                                    PART IV
 
ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K
 
(a) The following documents are filed as a part of this report:
 
<TABLE>
<CAPTION>
                                                                     PAGE
<S>   <C>                                                            <C>
1.    Financial Statements:
      ---------------------
      Consolidated Balance Sheet at December 25, 1998, and
        December 26, 1997                                             F-1
      Consolidated Statement of Operations for the Years Ended
        December 25, 1998, December 26, 1997, and December 27,
        1996                                                          F-2
      Consolidated Statement of Cash Flows for the Years Ended
        December 25, 1998, December 26, 1997, and December 27,
        1996                                                          F-3
      Consolidated Statement of Changes in Stockholders' Equity
        for the Years Ended December 25, 1998, December 26, 1997,
        and December 27, 1996                                         F-4
      Notes to Consolidated Financial Statements                      F-5
      Report of Independent Accountants                              F-21
2.    Financial Statement Schedules:
      ------------------------------
      Schedule II -- Valuation and Qualifying Accounts and
        Reserves                                                     F-22
</TABLE>
 
All other schedules are omitted because they are not applicable, or the required
information is included in the consolidated financial statements or notes
thereto.
 
3.  Exhibits:
    ---------
 
    The exhibits listed below are filed as part of this Annual Report on Form
    10-K or are incorporated by reference into this Annual Report on Form 10-K:
 
<TABLE>
   <S>                      <C>
   3.1                      Restated Certificate of Incorporation of Storage Technology
                            Corporation dated July 28, 1987 (filed as Exhibit 3 to the
                            Company's Quarterly Report on Form 10-Q for the quarter
                            ended September 25, 1987, and as Exhibit 3.1(ii) to the
                            Company's Quarterly Report on Form 10-Q, for the quarter
                            ended September 29, 1995, filed on November 13, 1995, and
                            incorporated herein by reference).
   3.2                      Certificate of Amendment dated May 22, 1989, to the Restated
                            Certificate of Incorporation dated July 28, 1987 (filed as
                            Exhibit (c)(1) to the Company's Current Report on Form 8-K
                            dated June 2, 1989, and incorporated herein by reference).
   3.3                      Certificate of Second Amendment dated June 2, 1992, to the
                            Restated Certificate of Incorporation dated July 28, 1987
                            (filed as Exhibit 3 to the Company's Quarterly Report on
                            Form 10-Q for the quarter ended June 26, 1992, and
                            incorporated herein by reference).
   3.4                      Restated Bylaws of Storage Technology Corporation, as
                            amended through November 11, 1998 (filed as Exhibit 3.1 to
                            the Company's Current Report on Form 8-K dated November 19,
                            1998, and incorporated herein by reference).
   4.1                      Specimen Certificate of Common Stock, $0.10 par value of
                            Registrant (filed as Exhibit (c)(2) as to the Company's
                            Current Report on Form 8-K dated June 2, 1989, and
                            incorporated herein by reference).
   4.2                      Rights Agreement dated as of August 20, 1990, between
                            Storage Technology Corporation and First Fidelity Bank,
                            N.A., New Jersey, Rights Agent (filed as Exhibit 4.1 to the
                            Company's Current Report on Form 8-K dated August 20, 1990,
                            and incorporated herein by reference).
</TABLE>
 
                                       31
<PAGE>   32
<TABLE>
   <S>                      <C>
   4.3                      Certificate of Designations of Series B Junior Participating
                            Preferred Stock (filed as Exhibit A to Exhibit 4.1 to the
                            Company's Current Report on Form 8-K dated August 8, 1990,
                            and incorporated herein by reference).
   10.1(1)                  1987 Employee Stock Purchase Plan, as amended (filed as part
                            of the Company's Registration Statement on Form S-8 filed
                            September 8, 1994, File No. 33-42818, and incorporated
                            herein by reference).
   10.2(1)                  1995 Equity Participation Plan (filed as Exhibit 10.1 to the
                            Company's Quarterly Report on Form 10-Q for the quarter
                            ended June 30, 1995, filed on August 11, 1995, and
                            incorporated herein by reference).
   10.3(1)                  Storage Technology Corporation MBO Plan (filed as Exhibit
                            10.1 to the Company's Quarterly Report on Form 10-Q for the
                            quarter ended July 1, 1994, filed on August 12, 1994, and
                            incorporated herein by reference).
   10.4(1)                  Tenth Amendment and Restatement of Storage Technology
                            Corporation 1987 Employee Stock Purchase Plan (filed as
                            Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q
                            for the quarter ended June 28, 1996, filed on August 12,
                            1996, and incorporated herein by reference).
   10.5(1)                  Storage Technology Corporation Amended and Restated Stock
                            Option Plan for Non-Employee Directors (filed as Exhibit
                            10.2 to the Company's Quarterly Report on Form 10-Q for the
                            quarter ended June 28, 1996, filed on August 12, 1996, and
                            incorporated herein by reference).
   10.6(1)                  Employment Agreement between the Company and David E. Weiss,
                            dated June 24, 1996 (filed as Exhibit 10.3 to the Company's
                            Quarterly Report on Form 10-Q for the quarter ended June 28,
                            1996, filed on August 12, 1996, and incorporated herein by
                            reference).
   10.7(1)                  Storage Technology Corporation 1995 Equity Participation
                            Plan, as amended September 1996 (filed as Exhibit 10.3 to
                            the Company's Quarterly Report on Form 10-Q for the quarter
                            ended September 27, 1996, filed on November 8, 1996, and
                            incorporated herein by reference).
   10.8(1)                  Storage Technology Corporation 1995 Equity Participation
                            Plan, as amended February 1997 (filed as Exhibit 10.1 to the
                            Company's Quarterly Report on Form 10-Q for the quarter
                            ended June 27, 1997, filed on August 8, 1997, and
                            incorporated herein by reference).
   10.9                     Contingent Multicurrency Note Purchase Commitment Agreement
                            dated as of December 12, 1996, between the Company and Bank
                            of America National Trust and Savings Association (filed as
                            Exhibit 10.29 to the Company's Annual Report on Form 10-K
                            for the year ended December 27, 1996, and incorporated
                            herein by reference).
   10.10                    Eleventh Amendment to the Storage Technology Corporation
                            1987 Employee Stock Purchase Plan, as amended (filed as
                            Exhibit 10.23 to the Company's Annual Report on Form 10-K
                            for the year ended December 26, 1997, and incorporated
                            herein by reference).
   10.11(1)                 Agreement between the Company and Gary Francis, dated August
                            19, 1997(filed as Exhibit 10.25 to the Company's Annual
                            Report on Form 10-K for the year ended December 26, 1997,
                            and incorporated herein by reference).
   10.12(1)                 Employment Agreement between the Company and Victor Perez,
                            dated February 17, 1995 (filed as Exhibit 10.26 to the
                            Company's Annual Report on Form 10-K for the year ended
                            December 27, 1996, and incorporated herein by reference).
</TABLE>
- ------------------------
 
1   Contract or compensatory plan or arrangement in which directors and/or
    officers participate.
 
                                       32
<PAGE>   33
<TABLE>
   <S>                      <C>
   10.13(3)                 OEM Agreement between the Company and International Business
                            Machines Corporation ("IBM") dated December 18, 1997
                            (redacted copy filed as Exhibit 10.28 to the Company's
                            Annual Report on Form 10-K for the fiscal year ended
                            December 26, 1997, and incorporated herein by reference).
   10.14(2)                 Amendment No. 1 to OEM Agreement dated March 19, 1998,
                            between the Company and IBM. Concurrent with the filing of
                            this Annual Report on Form 10-K, the Company is submitting
                            to the Commission a request for confidential treatment to
                            omit certain information pursuant to Rule 24b-2 of the
                            Securities Exchange act of 1934, as amended.
   10.15(2)                 Amendment No. 2 to OEM Agreement dated April 28, 1998,
                            between the Company and IBM. Concurrent with the filing of
                            this Annual Report on Form 10-K, the Company is submitting
                            to the Commission a request for confidential treatment to
                            omit certain information pursuant to Rule 24b-2 of the
                            Securities Exchange act of 1934, as amended.
   10.16(2)                 Amendment No. 3 to OEM Agreement dated September 19, 1998,
                            between the Company and IBM. Concurrent with the filing of
                            this Annual Report on Form 10-K, the Company is submitting
                            to the Commission a request for confidential treatment to
                            omit certain information pursuant to Rule 24b-2 of the
                            Securities Exchange act of 1934, as amended.
   10.17(2)                 Amendment No. 4 to OEM Agreement dated September 19, 1998,
                            between the Company and IBM. Concurrent with the filing of
                            this Annual Report on Form 10-K, the Company is submitting
                            to the Commission a request for confidential treatment to
                            omit certain information pursuant to Rule 24b-2 of the
                            Securities Exchange act of 1934, as amended.
   10.18                    Credit Agreement dated as of October 23, 1997, among the
                            Company and Bank of America National Trust and Savings
                            Association, as Agent, Swingline Bank, and Letter of Credit
                            Issuing Bank, and the other financial institutions party
                            thereto (filed as Exhibit 10.28 to the Company's Annual
                            Report on Form 10-K for the year ended December 26, 1997,
                            and incorporated herein by reference).
   10.19(2)                 Second Amendment to Second Amended and Restated Contingent
                            Multicurrency Note Purchase Commitment Agreement dated
                            November 20, 1998, between Bank of America National Trust
                            and Savings Association and the Company.
   10.20(1/2)               Employment Agreement between Bruce S. Taafe and the Company.
   21.0(2)                  Subsidiaries of Registrant.
   23.1(2)                  Consent of PricewaterhouseCoopers LLP.
   24.0(2)                  Power of Attorney (See Page 35).
   27.0(2)                  Financial Data Schedule.
</TABLE>
 
(b) Reports on Form 8-K.
 
    ----------------------------
 
    On November 19, 1998, the Company filed a Current Report on Form 8-K, under
    Item 5, regarding the Company's announcement that on November 11, 1998, the
    Board of Directors approved an amendment to Article II, Section II, entitled
    "Stockholders -- Notice of Stockholder Business", of the Restated Bylaws of
    the Registrant. The amendment changes the advance notice period with respect
    to the submission of proposals to be presented by a stockholder at the
    Registrant's annual meeting of stockholders that are not intended to be
    included in the Registrant's proxy statement pursuant to Rule 14a-8 under
    the Securities Exchange Act of 1934, as amended. In order to be
 
- ------------------------
 
1   Contract or compensatory plan or arrangement in which directors and/or
    officers participate.
 
2   Indicates exhibits filed with this Annual Report on Form 10-K.
 
3   Confidential treatment granted on certain portion of this agreement.
 
                                       33
<PAGE>   34
 
    considered timely for purposes of the Registrant's 1999 Annual Meeting of
    Stockholders, a stockholder must provide notice of the stockholder's
    proposal to the Secretary of the Registrant on or after January 6, 1999 and
    on or before February 5, 1999. A stockholder's notice must set forth, as to
    each proposed matter: (a) a brief description of the business and reason for
    conducting such business at the meeting; (b) the name and address (as they
    appear on the Registrant's books) of the stockholder proposing such
    business, or the name and address of the beneficial holder or other party on
    whose behalf the proposal is made; (c) the class and number of shares of the
    Registrant owned by the stockholder or beneficial holder or other party on
    whose behalf the proposal is made; and (d) any material interest of the
    stockholder or beneficial holder or other party on whose behalf the proposal
    is made in such business. The presiding officer of the meeting may refuse to
    acknowledge any matter not presented in compliance with the foregoing
    procedure.
 
    On December 23, 1998, the Company filed a Current Report on Form 8-K, under
    Item 5, regarding the Company's announcement that on December 18, 1998,
    David E. Lacey, the Registrant's Executive Vice president and Chief
    Financial Officer, had resigned and that Robert S. Kocol had been appointed
    as Corporate Vice President and Chief Financial Officer.
 
(c) Exhibits.
    ---------
 
    The Exhibits listed in Item 14(a)(3) hereof are filed as part of this Annual
    Report on Form 10-K.
 
(d) Financial Statement Schedules.
    ------------------------------
 
    See Item 14(a)(3) above.
 
                                       34
<PAGE>   35
 
                                   SIGNATURES
 
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange
Act of 1934, the Registrant has duly caused this report to be signed on its
behalf by the undersigned, thereunto duly authorized.
 
Dated: March 5, 1999                        STORAGE TECHNOLOGY CORPORATION
 
                                            By: /s/  David E. Weiss
                                              ----------------------------------
                                              David E. Weiss
                                              Chairman of the Board,
                                              President and Chief Executive
                                                Officer
                                              (Principal Executive Officer)
 
                               POWER OF ATTORNEY
 
KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears
below constitutes and appoints David E. Weiss and Robert S. Kocol, jointly and
severally, his attorneys-in-fact, each with the power of substitution, for him
in any and all capacities, to sign any amendments to this Report on Form 10-K,
and file the same, with exhibits thereto and other documents in connection
therewith, with the Securities and Exchange Commission, hereby ratifying and
confirming all that each of said attorneys-in-fact, or his substitute or
substitutes, may do or cause to be done by virtue hereof.
 
Pursuant to the requirements of the Securities Exchange Act of 1934, this report
has been signed below by the following persons on behalf of the Registrant and
in the capacities and on the dates indicated.
 
<TABLE>
<CAPTION>
                      SIGNATURE                                    TITLE                    DATE
<S>                                                    <C>                             <C>
 
/s/ David E. Weiss                                     Chairman of the Board,          March 5, 1999
- -----------------------------------------------------  President and Chief Executive
David E. Weiss                                         Officer (Principal Executive
                                                       Officer)
 
/s/ Robert S. Kocol                                    Corporate Vice President and    March 5, 1999
- -----------------------------------------------------  Chief Financial Officer
Robert S. Kocol                                        (Principal Financial Officer)
 
/s/ Thomas G. Arnold                                   Vice President and Corporate    March 5, 1999
- -----------------------------------------------------  Controller (Principal
Thomas G. Arnold                                       Accounting Officer)
</TABLE>
 
                                       35
<PAGE>   36
 
<TABLE>
<CAPTION>
                      SIGNATURE                                    TITLE                    DATE
<S>                                                    <C>                             <C>
/s/ William L. Armstrong                               Director                        March 5, 1999
- -----------------------------------------------------
William L. Armstrong
 
/s/ J. Harold Chandler                                 Director                        March 5, 1999
- -----------------------------------------------------
J. Harold Chandler
 
/s/ Maurice F. Holmes                                  Director                        March 5, 1999
- -----------------------------------------------------
Maurice F. Holmes
 
/s/ William R. Hoover                                  Director                        March 5, 1999
- -----------------------------------------------------
William R. Hoover
 
/s/ Stephen J. Keane                                   Director                        March 5, 1999
- -----------------------------------------------------
Stephen J. Keane
 
/s/ William T. Kerr                                    Director                        March 5, 1999
- -----------------------------------------------------
William T. Kerr
 
/s/ Robert E. La Blanc                                 Director                        March 5, 1999
- -----------------------------------------------------
Robert E. La Blanc
 
/s/ Robert E. Lee                                      Director                        March 5, 1999
- -----------------------------------------------------
Robert E. Lee
 
/s/ Harrison Shull                                     Director                        March 5, 1999
- -----------------------------------------------------
Harrison Shull
 
/s/ Richard C. Steadman                                Director                        March 5, 1999
- -----------------------------------------------------
Richard C. Steadman
</TABLE>
 
                                       36
<PAGE>   37
 
                STORAGE TECHNOLOGY CORPORATION AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEET
                           (In Thousands of Dollars)
 
<TABLE>
<CAPTION>
                                                              December 25,    December 26,
                                                                  1998            1997
                                                              ----------------------------
<S>                                                           <C>             <C>
 
ASSETS
Current assets:
  Cash, including cash equivalents of $190,925 at 1998 and
     $186,958 at 1997                                          $  231,985      $  256,319
  Short-term investments                                                           77,275
  Accounts receivable, net of allowance for doubtful
     accounts of $20,424 at 1998 and $17,924 at 1997              755,931         627,981
  Inventories (Note 2)                                            261,808         205,461
  Deferred income tax assets, net (Note 3)                        114,715         102,575
                                                              ------------    ------------
     Total current assets                                       1,364,439       1,269,611
Property, plant and equipment, at cost net of accumulated
  depreciation (Note 4)                                           320,946         305,122
Spare parts for maintenance, at cost net of accumulated
  amortization of $57,387 at 1998 and $49,739 at 1997              33,395          27,523
Deferred income tax assets, net (Note 3)                           15,875          37,468
Other assets                                                      108,289         100,293
                                                              ------------    ------------
     Total assets                                              $1,842,944      $1,740,017
                                                              ------------    ------------
                                                              ------------    ------------
 
LIABILITIES
Current liabilities:
  Credit facilities (Note 5)                                   $  276,673
  Current portion of long-term debt (Note 5)                        1,722      $    3,282
  Accounts payable                                                136,555         103,483
  Accrued liabilities (Note 6)                                    332,758         406,384
  Income taxes payable (Note 3)                                    78,400          95,256
                                                              ------------    ------------
     Total current liabilities                                    826,108         608,405
Long-term debt (Note 5)                                            17,260          19,109
                                                              ------------    ------------
     Total liabilities                                            843,368         627,514
                                                              ------------    ------------
Commitments and contingencies (Notes 5 and 7)
 
STOCKHOLDERS' EQUITY
Common stock, $.10 par value, 150,000,000 shares authorized;
  100,338,353 shares issued at 1998, and 108,008,082 shares
  issued at 1997 (Note 8)                                          10,034          10,800
Capital in excess of par value                                    834,778       1,161,997
Retained earnings (accumulated deficit)                           159,254         (39,017)
Treasury stock of 117,271 shares at 1998 and 918,896
  shares at 1997, at cost                                          (2,409)        (18,874)
Unearned compensation                                              (2,081)         (2,403)
                                                              ------------    ------------
     Total stockholders' equity                                   999,576       1,112,503
                                                              ------------    ------------
                                                               $1,842,944      $1,740,017
                                                              ------------    ------------
                                                              ------------    ------------
</TABLE>
 
   The accompanying notes are an integral part of the consolidated financial
                                  statements.
 
                                       F-1
<PAGE>   38
 
                STORAGE TECHNOLOGY CORPORATION AND SUBSIDIARIES
                      CONSOLIDATED STATEMENT OF OPERATIONS
                    (In Thousands, Except Per Share Amounts)
 
<TABLE>
<CAPTION>
                                                                Year Ended
                                                ------------------------------------------
                                                December 25,   December 26,   December 27,
                                                    1998           1997           1996
                                                ------------------------------------------
<S>                                             <C>            <C>            <C>
Revenue                                          $2,258,222     $2,144,656     $2,039,550
Cost of revenue                                   1,217,812      1,171,530      1,192,777
                                                ------------   ------------   ------------
     Gross profit                                 1,040,410        973,126        846,773
Research and product development costs              234,677        209,526        176,422
Selling, general, administrative and other
  income and expense, net                           492,928        472,839        444,870
                                                ------------   ------------   ------------
     Operating profit                               312,805        290,761        225,481
Interest income                                      15,274         30,065         27,333
Interest expense                                     (8,331)        (4,709)       (26,122)
                                                ------------   ------------   ------------
     Income before income taxes and
       extraordinary item                           319,748        316,117        226,692
Provision for income taxes (Note 3)                (121,500)       (84,300)       (55,900)
                                                ------------   ------------   ------------
     Income before extraordinary item               198,248        231,817        170,792
Extraordinary gain on sale of lease assets,
  net of income taxes of $8,200                                                     9,535
                                                ------------   ------------   ------------
     Net income                                  $  198,248     $  231,817     $  180,327
                                                ------------   ------------   ------------
                                                ------------   ------------   ------------
EARNINGS PER COMMON SHARE (Notes 1 and 9)
Basic:
     Income before extraordinary item            $     1.91     $     1.93     $     1.52
     Extraordinary gain, net                                                          .09
                                                ------------   ------------   ------------
                                                 $     1.91     $     1.93     $     1.61
                                                ------------   ------------   ------------
                                                ------------   ------------   ------------
Diluted:
     Income before extraordinary item            $     1.86     $     1.89     $     1.43
     Extraordinary gain, net                                                          .07
                                                ------------   ------------   ------------
                                                 $     1.86     $     1.89     $     1.50
                                                ------------   ------------   ------------
                                                ------------   ------------   ------------
</TABLE>
 
   The accompanying notes are an integral part of the consolidated financial
                                  statements.
 
                                       F-2
<PAGE>   39
 
                STORAGE TECHNOLOGY CORPORATION AND SUBSIDIARIES
                      CONSOLIDATED STATEMENT OF CASH FLOWS
                           (In Thousands of Dollars)
 
<TABLE>
<CAPTION>
                                                                 Year Ended
                                                 ------------------------------------------
                                                 December 25,   December 26,   December 27,
                                                     1998           1997           1996
                                                 ------------------------------------------
<S>                                              <C>            <C>            <C>
OPERATING ACTIVITIES
Cash received from customers                     $ 2,124,070    $ 2,110,587    $ 2,158,927
Cash paid to suppliers and employees              (1,926,451)    (1,615,636)    (1,662,990)
Interest received                                     15,274         29,103         26,448
Interest paid                                         (6,657)        (3,640)       (21,866)
Income taxes paid, net                              (118,131)       (73,754)       (35,819)
                                                 ------------   ------------   ------------
     Net cash provided by operating activities        88,105        446,660        464,700
                                                 ------------   ------------   ------------
INVESTING ACTIVITIES
Short-term investments, net                           77,275        (48,099)       (29,176)
Purchase of property, plant and equipment, net      (116,903)       (65,893)       (68,946)
Other assets, net                                    (21,008)         8,366         10,059
                                                 ------------   ------------   ------------
     Net cash used in investing activities           (60,636)      (105,626)       (88,063)
                                                 ------------   ------------   ------------
FINANCING ACTIVITIES
Repayments of nonrecourse borrowings and other
  debt, net                                           (4,936)        (5,245)      (100,036)
Repurchases of common stock (Note 8)                (359,395)      (484,996)      (195,498)
Proceeds from credit facilities, net                 273,211
Proceeds from employee stock plans                    36,924         29,790         39,154
                                                 ------------   ------------   ------------
     Net cash used in financing activities           (54,196)      (460,451)      (256,380)
                                                 ------------   ------------   ------------
     Effect of exchange rate changes on cash           2,393        (12,665)         3,642
                                                 ------------   ------------   ------------
Increase (decrease) in cash and cash
  equivalents                                        (24,334)      (132,082)       123,899
     Cash and cash equivalents -- beginning of
       the year                                      256,319        388,401        264,502
                                                 ------------   ------------   ------------
Cash and cash equivalents -- end of the year     $   231,985    $   256,319    $   388,401
                                                 ------------   ------------   ------------
                                                 ------------   ------------   ------------
RECONCILIATION OF NET INCOME TO NET CASH
  PROVIDED BY OPERATING ACTIVITIES
Net income                                       $   198,248    $   231,817    $   180,327
Depreciation and amortization expense                122,864        112,317        174,763
Translation (gain) loss                               (7,773)        17,793          4,193
Other non-cash adjustments to income                  19,124         32,862         16,208
Increase in accounts receivable                     (137,940)       (67,955)      (143,103)
Decrease in notes receivable and sales-type
  leases                                                                           246,297
(Increase) decrease in inventories                   (49,961)        83,499         11,886
Increase in equipment held for sale or lease, net                                  (24,080)
Increase in spare parts, net                         (22,737)        (9,300)        (9,316)
(Increase) decrease in net deferred income tax
  asset, net                                           9,679        (13,635)       (42,689)
Increase (decrease) in accounts payable               31,792         22,889         (9,360)
Increase (decrease) in accrued liabilities           (58,305)        20,219        (11,396)
Increase (decrease) in income taxes payable          (16,886)        16,154         70,970
                                                 ------------   ------------   ------------
     Net cash provided by operating activities   $    88,105    $   446,660    $   464,700
                                                 ------------   ------------   ------------
                                                 ------------   ------------   ------------
</TABLE>
 
   The accompanying notes are an integral part of the consolidated financial
                                  statements.
 
                                       F-3

<PAGE>   40
 
                STORAGE TECHNOLOGY CORPORATION AND SUBSIDIARIES
           CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY
                           (In Thousands of Dollars)
 
<TABLE>
<CAPTION>
                                                                 Retained                                  Notes
                                                  Capital in     Earnings                                Receivable
                                        Common    Excess of    (Accumulated   Treasury     Unearned         From
                                         Stock    Par Value      Deficit)      Stock     Compensation   Stockholders     Total
                                        -----------------------------------------------------------------------------------------
<S>                                     <C>       <C>          <C>            <C>        <C>            <C>            <C>
Balances, December 29, 1995            $ 5,335    $1,414,551    $(445,761)    $  (777)     $(6,427)       $(4,088)     $  962,833
 
  2-for-1 stock split in the form of a
    stock dividend (Note 8)              5,335                     (5,335)
                                        -------    ---------   ----------     --------   ---------      ---------       ---------
Balances, December 29, 1995, as
  restated                              10,670     1,414,551     (451,096)       (777)      (6,427)        (4,088)        962,833
 
  7% Convertible Subordinated
    Debentures exchanged for stock
    (14,565,072 shares)                  1,456       168,273                                                              169,729
  8% Convertible Subordinated
    Debentures exchanged for stock
    (1,132,820 shares)                     114        19,628                                                               19,742
  Shares issued under stock purchase
    plan, and for exercises of options
    (2,944,624 shares)                     294        37,555                                                               37,849
  Repurchases of common stock
    (9,000,000 shares)                    (900)     (195,048)                                                            (195,948)
  Net income                                                      180,327                                                 180,327
  Other                                      2           (20)        (483)        (13)       2,877          4,088           6,451
                                        -------    ---------   ----------     --------   ---------      ---------       ---------
Balances, December 27, 1996             11,636     1,444,939     (271,252)       (790)      (3,550)             0       1,180,983
 
  8% Convertible Subordinated
    Debentures exchanged for stock
    (7,106,408 shares)                     710       123,560                                                              124,270
  Shares issued under stock purchase
    plan, and for exercises of options
    (2,146,788 shares, including
    1,106,540 shares issued from
    treasury)                              104        37,409                   22,681                                      60,194
  Repurchases of common stock
    (18,349,000 shares) (Note 8)        (1,646)     (443,447)                 (40,726)                                   (485,819)
  Net income                                                      231,817                                                 231,817
  Other                                     (4)         (464)         418         (39)       1,147                          1,058
                                        -------    ---------   ----------     --------   ---------      ---------       ---------
Balances, December 26, 1997             10,800     1,161,997      (39,017)    (18,874)      (2,403)             0       1,112,503
 
  Shares issued under stock purchase
    plan, and for exercises of options
    (1,997,451 shares, including
    808,254 shares issued from
    treasury)                              119        31,459                   16,601                                      48,179
  Repurchases of common stock
    (8,822,500 shares) (Note 8)           (882)     (271,528)                                                            (272,410)
  Final price adjustment for common
    stock repurchased in October 1997
    (Note 8)                                         (87,030)                                                             (87,030)
  Net income                                                      198,248                                                 198,248
  Other                                     (3)         (120)          23        (136)         322                             86
                                        -------    ---------   ----------     --------   ---------      ---------       ---------
Balances, December 25, 1998            $10,034    $  834,778    $ 159,254     $(2,409)     $(2,081)       $     0      $  999,576
                                        -------    ---------   ----------     --------   ---------      ---------       ---------
                                        -------    ---------   ----------     --------   ---------      ---------       ---------
</TABLE>
 
   The accompanying notes are an integral part of the consolidated financial
                                  statements.
 
                                       F-4

<PAGE>   41
 
                STORAGE TECHNOLOGY CORPORATION AND SUBSIDIARIES
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
NOTE 1 -- SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
PRINCIPLES OF CONSOLIDATION
 
The accompanying consolidated financial statements include the accounts of
Storage Technology Corporation and its wholly owned subsidiaries (collectively
hereinafter referred to as StorageTek or the Company). All intercompany accounts
and transactions have been eliminated in consolidation.
 
NATURE OF OPERATIONS
 
StorageTek designs, manufactures, markets and maintains information storage
products, storage services and storage management software for end-user
customers, original equipment manufacturers (OEMs), value-added resellers (VARs)
and value-added distributors. The principal markets for the Company's products
and services are located in the United States and Europe.
 
SIGNIFICANT ESTIMATES
 
The preparation of financial statements in conformity with generally accepted
accounting principles requires management to make estimates and assumptions that
affect the reported amounts of assets and liabilities, the disclosure of
contingent assets and liabilities as of the date of the financial statements,
and the reported amounts of revenue and expenses during the periods. Significant
estimates have been made by management in several areas, including the
realizability of deferred tax assets (see Note 3) and the possible outcome of
outstanding litigation (see Note 7). Actual results could differ materially from
these estimates, making it reasonably possible that a change in these estimates
could occur in the near term.
 
REVENUE RECOGNITION
 
Revenue for storage product sales and storage management software licensed to
end-users is recognized at the time of acceptance by the customer, generally
after installation at a customer site. Revenue for sales and license to OEMs,
VARs and distributors is recognized at the time of shipment, together with a
reserve for estimated product returns. Estimated product warranty costs are
accrued at the time of revenue recognition. Revenue for storage services is
recognized as earned and the associated costs are generally expensed as
incurred.
 
CASH EQUIVALENTS AND SHORT-TERM INVESTMENTS
 
Cash equivalents are short-term, highly liquid investments that are both readily
convertible to cash and have original maturities of three months or less at the
time of acquisition. The carrying value of the Company's cash equivalents
approximates fair value. Financial investments that do not qualify as cash
equivalents are classified as short-term investments. Short-term investments are
principally comprised of commercial paper and are recorded at cost plus accrued
interest, which approximates fair value.
 
CAPITALIZED SOFTWARE COSTS
 
The Company capitalized costs associated with acquiring and developing software
products to be licensed to customers of $12,764,000 in 1998, $616,000 in 1997,
and $510,000 in 1996. Other assets as shown on the Consolidated Balance Sheet
include unamortized software costs of $14,498,000 as of December 25, 1998,
$13,907,000 as of December 26, 1997, and $33,988,000 as of December 27, 1996.
Amortization expense is recognized over the estimated useful lives of the
related products, generally four to five years. Amortization expense associated
with capitalized software costs were $12,173,000 in 1998, $20,697,000 in 1997,
and $20,556,000 in 1996. The Company evaluates the
 
                                       F-5
<PAGE>   42
 
realizability of the carrying value of the capitalized software based upon
estimates of the associated future revenue.
 
DEPRECIATION AND GOODWILL AMORTIZATION
 
Depreciation of property, plant and equipment is computed using the
straight-line method over the estimated useful lives of the related assets.
Other assets as shown on the Consolidated Balance Sheet include unamortized
goodwill of $17,530,000 as of December 25, 1998, $23,200,000 as of December 26,
1997, and $32,226,000 as of December 27, 1996. Amortization of goodwill is
calculated on a straight-line basis over a period not exceeding 10 years. The
Company evaluates the realizability of the carrying value of goodwill based upon
estimated future cash flows calculated on an undiscounted basis.
 
TRANSLATION OF FOREIGN CURRENCIES
 
The functional currency for StorageTek's foreign subsidiaries is the U.S.
dollar, reflecting the significant volume of intercompany transactions and
associated cash flows that result from the fact that the majority of the
Company's storage products sold worldwide are manufactured in the United States.
Accordingly, monetary assets and liabilities are translated at year-end exchange
rates, while non-monetary items are translated at historical exchange rates.
Revenue and expenses are translated at the average exchange rates in effect
during the year, except for cost of revenue and depreciation, which are
translated at historical exchange rates. See Note 12 for information with
respect to the Company's accounting policies for financial instruments utilized
in its foreign currency hedging program.
 
STOCK-BASED COMPENSATION PLANS
 
Stock-based compensation plans are accounted for using the intrinsic value
method prescribed in Accounting Principles Board Opinion (APB) No. 25,
"Accounting for Stock Issued to Employees."
 
EARNINGS PER COMMON SHARE
 
Earnings per common share (EPS) is computed using Statement of Financial
Accounting Standards (SFAS) No. 128, "Earnings Per Share." Basic EPS is computed
by dividing net income by the weighted-average number of common shares
outstanding during the period. Diluted EPS reflects the potential dilution that
could occur if securities or other contracts to issue common stock were
exercised or converted into common shares.
 
RECENTLY ISSUED ACCOUNTING STANDARDS
 
In June 1998, the FASB issued SFAS No. 133, "Accounting for Derivative
Instruments and Hedging Activities." SFAS No. 133 is effective for all fiscal
periods beginning after June 15, 1999, with earlier adoption encouraged. SFAS
No. 133 requires all derivatives to be recognized as either assets or
liabilities on the consolidated balance sheet and be measured at their fair
value. The corresponding change in fair value of the derivative instrument will
be recorded in the earnings of the Company, net of any change in fair value of
the related hedged item, or as a component of comprehensive income depending
upon the intended use and designation. The Company is currently evaluating the
impact of SFAS No. 133 on its financial statements and its plans for adopting
the new accounting standard.
 
                                       F-6
<PAGE>   43
 
NOTE 2 -- INVENTORIES
 
Inventories include material, labor and factory overhead and are accounted for
at the lower of cost (first-in, first-out method) or market. The Company
evaluates the need for reserves associated with obsolete, slow-moving and
nonsalable inventory by reviewing net realizable values on a quarterly basis.
The components of inventories, net of the associated reserves, are as follows
(in thousands of dollars):
 
<TABLE>
<CAPTION>
                                                      December 25,   December 26,
                                                          1998           1997
                                                      ---------------------------
<S>                                                   <C>            <C>
Raw materials                                           $ 46,672       $ 32,607
Work-in-process                                           76,839         57,235
Finished goods                                           138,297        115,619
                                                      -----------    -----------
                                                        $261,808       $205,461
                                                      -----------    -----------
                                                      -----------    -----------
</TABLE>
 
NOTE 3 -- INCOME TAXES
 
Income before income taxes and extraordinary item consists of the following (in
thousands of dollars):
 
<TABLE>
<CAPTION>
                                                      Year Ended
                                      ------------------------------------------
                                      December 25,   December 26,   December 27,
                                          1998           1997           1996
                                      ------------------------------------------
<S>                                   <C>            <C>            <C>
United States                           $345,314       $339,346       $220,495
International                            (25,566)       (23,229)         6,197
                                      -----------    -----------    -----------
                                        $319,748       $316,117       $226,692
                                      -----------    -----------    -----------
                                      -----------    -----------    -----------
</TABLE>
 
The provision for income taxes attributable to the amounts shown above consists
of the following (in thousands of dollars):
 
<TABLE>
<CAPTION>
                                                      Year Ended
                                      ------------------------------------------
                                      December 25,   December 26,   December 27,
                                          1998           1997           1996
                                      ------------------------------------------
<S>                                   <C>            <C>            <C>
Current tax provision:
  U.S. federal                          $ 84,700       $102,900       $ 44,400
  International                            8,200          5,700         38,800
  State                                   13,600         10,600         15,100
                                      -----------    -----------    ----------
                                         106,500        119,200         98,300
                                      -----------    -----------    ----------
Deferred tax provision (benefit):
  U.S. federal                             9,600        (32,400)       (31,300)
  International                            4,000          7,500        (11,200)
  State                                    1,400        (10,000)           100
                                      -----------    -----------    ----------
                                          15,000        (34,900)       (42,400)
                                      -----------    -----------    ----------
                                        $121,500       $ 84,300       $ 55,900
                                      -----------    -----------    ----------
                                      -----------    -----------    ----------
</TABLE>
 
The provision for income taxes attributable to income before income taxes and
extraordinary item includes benefits of $860,000 in 1998; $5,590,000 in 1997;
and $53,900,000 in 1996 from the utilization of net operating loss
carryforwards.
 
                                       F-7
<PAGE>   44
 
The deferred income tax balances on the Consolidated Balance Sheet consist of
the following (in thousands of dollars):
 
<TABLE>
<CAPTION>
                                                      December 25,   December 26,
                                                          1998           1997
                                                      ---------------------------
<S>                                                   <C>            <C>
Deferred income tax assets, net of valuation
  allowance:
  Current                                               $114,715       $102,575
  Non-current                                             15,875         37,468
                                                      -----------    -----------
Net deferred income tax asset                           $130,590       $140,043
                                                      -----------    -----------
                                                      -----------    -----------
</TABLE>
 
The Company's net deferred income tax asset consists of the following (in
thousands of dollars):
 
<TABLE>
<CAPTION>
                                                    December 25,      December 26,
                                                        1998              1997
                                                    ------------------------------
<S>                                                 <C>               <C>
Gross deferred income tax assets:
  Net operating loss carryforwards                    $ 19,074          $ 17,226
  Tax credit carryforwards                                 204            15,865
  Restructuring accruals                                 1,778             6,150
  Other accrued liabilities and reserves                61,935            52,356
  Capitalized inventory costs                           30,010            31,941
  Deferred intercompany profit                          18,402            15,183
  Other                                                 31,318            29,907
                                                    -----------       -----------
                                                       162,721           168,628
Less: Valuation allowance                              (25,916)          (22,512)
                                                    -----------       -----------
                                                       136,805           146,116
                                                    -----------       -----------
Gross deferred income tax liabilities:
  Other                                                 (6,215)           (6,073)
                                                    -----------       -----------
Net deferred income tax asset                         $130,590          $140,043
                                                    -----------       -----------
                                                    -----------       -----------
</TABLE>
 
The net change in the valuation allowance for deferred income tax assets was an
increase of $3,404,000 in 1998 and a decrease of $78,011,000 in 1997. The
valuation allowance relates primarily to net deductible temporary differences,
tax credit carryforwards and net operating loss carryforwards of the Company's
international subsidiaries. The Company evaluates a variety of factors in
determining the amount of the deferred income tax assets to be recognized
pursuant to SFAS No. 109, "Accounting for Income Taxes," including the Company's
earnings history, the number of years the Company's operating loss and tax
credits can be carried forward, the existence of taxable temporary differences,
near-term earnings expectations and the highly competitive nature of the
high-technology market.
 
StorageTek has not provided for income taxes on the cumulative undistributed
earnings of its foreign subsidiaries to the extent they are considered to be
reinvested indefinitely (approximately $23,239,000 as of December 25, 1998). It
is not currently practicable to estimate the tax liability that might be payable
on the repatriation of these foreign earnings.
 
                                       F-8
<PAGE>   45
 
The provision for income taxes differs from the amount computed by applying the
U.S. federal income tax rate of 35% to income before income taxes and
extraordinary item for the following reasons (in thousands of dollars):
 
<TABLE>
<CAPTION>
                                                          Year Ended
                                          ------------------------------------------
                                          December 25,   December 26,   December 27,
                                              1998           1997           1996
                                          ------------------------------------------
<S>                                       <C>            <C>            <C>
U.S. federal income tax at statutory
  rate                                      $111,912       $110,641       $ 79,342
Increase (decrease) in income taxes
 resulting from:
  Recognized net operating losses,
     future deductions and credits            (1,781)       (54,198)       (72,755)
  Utilization of tax credits                  (7,000)        (2,555)
  Foreign tax rate and exchange rate
     differentials                             5,308         17,340         29,325
  Nondeductible items                         10,901          7,095          4,644
  State income taxes, net of federal
     benefits                                 11,789          9,867         13,545
  Effect of Puerto Rico operations            (9,629)        (4,530)         5,190
  Other, net                                                    640         (3,391)
                                          -----------    -----------    -----------
Income tax expense attributable to
 income before extraordinary item           $121,500       $ 84,300       $ 55,900
                                          -----------    -----------    -----------
                                          -----------    -----------    -----------
</TABLE>
 
The Internal Revenue Service is currently auditing the Company's federal income
tax returns for 1993 through 1996.
 
NOTE 4 -- PROPERTY, PLANT AND EQUIPMENT
 
Property, plant and equipment consists of the following (in thousands of
dollars):
 
<TABLE>
<CAPTION>
                                                      December 25,   December 26,
                                                          1998           1997
                                                      ---------------------------
<S>                                                   <C>            <C>
Machinery and equipment                                $ 644,902      $ 617,956
Buildings and building improvements                      168,322        158,395
Land and land improvements                                17,837         18,502
                                                      -----------    -----------
                                                         831,061        794,853
Less: Accumulated depreciation                          (510,115)      (489,731)
                                                      -----------    -----------
                                                       $ 320,946      $ 305,122
                                                      -----------    -----------
                                                      -----------    -----------
</TABLE>
 
Machinery and equipment includes capitalized leases of $24,644,000 as of
December 25, 1998, and $26,886,000 as of December 26, 1997. Accumulated
depreciation includes accumulated amortization on capitalized leases of
$7,758,000 as of December 25, 1998, and $10,076,000 as of December 26, 1997.
 
                                       F-9
<PAGE>   46
 
NOTE 5 -- CREDIT FACILITIES, DEBT AND LEASE OBLIGATIONS
 
Borrowings under credit facilities as of December 25,1998, consisted of the
following (in thousands of dollars):
 
<TABLE>
<S>                                                     <C>
$350 million Revolver                                   $195,000
Promissory notes denominated
  in foreign currencies                                   81,673
                                                        --------
                                                        $276,673
                                                        --------
                                                        --------
</TABLE>
 
The Company has a $350,000,000 unsecured revolving credit facility (the $350
million Revolver) which expires in October 2001. The credit limit available
under the $350 million Revolver will be reduced by $12,500,000 on the last day
of each calendar quarter with the first reduction beginning December 31, 1998.
The interest rates under the $350 million Revolver depend on the type of advance
selected. The basic advance rate is not less than the London Interbank Offered
Rate (LIBOR) plus .625% (approximately 6.25% as of December 25, 1998). The
interest rate on the outstanding borrowings under the $350 million Revolver as
of December 25, 1998, has varied from approximately 6.04% to 7.75%. As of
December 25, 1998, the Company had issued letters of credit for approximately
$800,000 under the $350 million Revolver. The remaining available credit under
the $350 million Revolver as of December 25, 1998, was approximately
$154,200,000. The $350 million Revolver contains certain financial and other
covenants, including restrictions on the Company's payment of cash dividends on
its common stock.
 
The Company has a financing agreement with a bank that provides for the sale of
promissory notes in the principal amount of up to $140,000,000 at any one time.
The agreement, which expires in January 2000, provides for commitments by the
bank to purchase promissory notes denominated in a number of foreign currencies.
As of December 25, 1998, the Company had committed to borrowings between January
1999 and December 1999 in the cumulative principal amount of approximately
$364,723,000. The notes must be repaid only to the extent of future revenue and
obligations under the agreement are not cancelable by the Company or the bank.
Gains and losses associated with changes in the underlying foreign currencies
are deferred during the commitment period and recognized as an adjustment to the
revenue supporting the note repayment at the time the bank purchases the
promissory notes. The promissory notes, together with accrued interest, are
payable in U.S. dollars within 40 days from the date of issuance and bear
interest at rates no less than the LIBOR plus 0.35% (approximately 5.98% as of
December 25, 1998). Under the terms of the agreement, the Company is required to
comply with certain covenants and, under certain circumstances, may be required
to maintain a collateral account, including cash and qualifying investments, in
an amount not less than the outstanding promissory notes.
 
In January 1999, the Company entered into an additional $150,000,000 unsecured
revolving credit facility (the $150 million Revolver) which expires in January
2000. The interest rates under the $150 million Revolver depend on the type of
advance selected. The basic advance rate is not less than the LIBOR plus 1.00%.
The $150 million Revolver contains certain financial and other covenants,
including restrictions on payment of cash dividends on the Company's common
stock.
 
                                      F-10
<PAGE>   47
 
Long-term debt, including capitalized lease obligations, consists of the
following (in thousands of dollars):
 
<TABLE>
<CAPTION>
                                                       December 25,   December 26,
                                                           1998           1997
                                                       ---------------------------
<S>                                                    <C>            <C>
Capitalized lease obligations                            $18,135        $21,159
Other                                                        847          1,232
                                                       ----------     ----------
                                                          18,982         22,391
Less: Current portion                                     (1,722)        (3,282)
                                                       ----------     ----------
                                                         $17,260        $19,109
                                                       ----------     ----------
                                                       ----------     ----------
</TABLE>
 
SCHEDULED DEBT MATURITIES AND OPERATING LEASE OBLIGATIONS
 
Scheduled maturities of debt and operating lease obligations as of December 25,
1998, are as follows (in thousands of dollars):
 
<TABLE>
<CAPTION>
                                                                        Noncancellable
                       Capitalized   Other     Credit     Total Debt    Operating Lease
                         Leases      Debt    Facilities   Commitments     Commitments
                       ----------------------------------------------------------------
<S>                    <C>           <C>     <C>          <C>           <C>
1999                    $  3,303     $675     $276,673     $280,651        $ 39,987
2000                       2,768      172                     2,940          29,444
2001                       2,262                              2,262          19,581
2002                       1,836                              1,836          11,180
2003                       1,815                              1,815           9,316
Thereafter                16,279                             16,279          19,696
                       ----------    -----   ----------   -----------   -------------
                          28,263     $847     $276,673     $305,783        $129,204
                                     -----   ----------   -----------   -------------
                                     -----   ----------   -----------   -------------
Less: Amount
  representing
  interest               (10,128)
                       ----------
Present value of
  capitalized lease
  obligations
  (including $1,047
  classified as
  current)              $ 18,135
                       ----------
                       ----------
</TABLE>
 
Rent expense associated with operating leases was $53,332,000 in 1998;
$41,200,000 in 1997; and $41,144,000 in 1996.
 
NOTE 6 -- ACCRUED LIABILITIES
 
Accrued liabilities consist of the following (in thousands of dollars):
 
<TABLE>
<CAPTION>
                                                       December 25,   December 26,
                                                           1998           1997
                                                       ---------------------------
<S>                                                    <C>            <C>
Deferred revenue                                         $ 79,097       $ 97,654
Accrued payroll                                            38,531         32,359
Other                                                     215,130        276,371
                                                       -----------    -----------
                                                         $332,758       $406,384
                                                       -----------    -----------
                                                       -----------    -----------
</TABLE>
 
Other accrued liabilities consists of items that are individually immaterial.
 
                                      F-11
<PAGE>   48
 
NOTE 7 -- LITIGATION
 
In January 1994, Stuff Technology Partners II, a Colorado Limited Partnership
(Stuff), filed suit in Boulder County, Colorado, District Court against the
Company and certain subsidiaries. The suit alleged that the Company breached a
1990 settlement agreement that had resolved earlier litigation between the
parties. The suit sought injunctive relief and damages in the amount of
$2,400,000,000. On December 28, 1995, the court dismissed the complaint. Stuff
appealed the dismissal to the Colorado Court of Appeals. In March 1997, the
Court of Appeals reversed the District Court's judgment and remanded the case to
the District Court for further proceedings. In December 1997, the Colorado
Supreme Court rejected the Company's petition seeking a reversal of this
decision. A new trial date has not been set. The case is in the discovery phase.
 
On June 29, 1995, Odetics, Inc. (Odetics) filed a patent infringement suit in
the U.S. District Court for the Eastern District of Virginia against the Company
alleging that the "pass-through" port in certain of the Company's tape library
products infringed U.S. Patent No. 4,779,151 (the "151 Patent"). The complaint
asked the court to impose injunctive relief, treble damages in an unspecified
amount, and an award of attorney's fees and costs. In February 1996, a jury
found that the Company's products did not infringe the 151 Patent. Odetics
appealed and in June 1997, the U.S. Court of Appeals for the Federal Circuit
reversed the District Court's ruling and remanded the case back to the District
Court for further proceedings. On March 27, 1998, a second trial was held and a
jury found that a pass-through port in certain of the Company's tape library
products willfully infringed the 151 Patent and awarded actual damages to
Odetics of $70,600,000. On July 31, 1998, the Court granted the Company's motion
for judgment as a matter of law, overturning the jury's verdict, and entered
judgment in favor of the Company. On August 10, 1998, Odetics appealed the
judgment to the U.S. Court of Appeals for the Federal Circuit, and on August 26,
1998, the Company filed a cross-appeal. These appeals are pending before the
U.S. Court of Appeals. Oral arguments on the appeal are scheduled for April
1999.
 
On December 8, 1995, Odetics filed a second patent infringement suit in the U.S.
District Court for the Eastern District of Virginia against the Company. The
complaint alleges that the "cartridge access port" in certain of the Company's
tape library products also infringes the 151 Patent. The complaint seeks
injunctive relief, treble damages in an unspecified amount, and an award of
attorney's fees and costs. This case has been stayed pending the outcome of the
case filed by Odetics on June 29, 1995, which is described above.
 
On October 3, 1995, certain former employees of the Company filed suit in the
U.S. District Court for the District of Colorado against the Company. The
amended suit alleges violations of the Age Discrimination in Employment Act
(ADEA) and the Employee Retirement Income Security Act (ERISA) between the
period of April 13, 1993, and December 31, 1996. On November 26, 1997, the Court
granted the plaintiffs' request to proceed as a collective action on the ADEA
claims. On November 9, 1998, the Court granted the plaintiffs' request to
proceed as a class on the ERISA claims. Approximately 1,300 persons are eligible
members of the ERISA class, which includes approximately 400 members of the ADEA
class. The Company has appealed the Court's certification of the ERISA class.
The plaintiffs seek, among other things, compensatory damages in an unspecified
amount, including the value of back pay and benefits; reinstatement as employees
or alternatively the value of future earnings and benefits; and exemplary or
liquidated damages. The Company has filed an answer denying both the ADEA and
ERISA claims. The case is in the discovery phase and a trial date has been set
for October 1999.
 
The Company believes it has adequate legal defenses with respect to each of the
actions cited above and intends to vigorously defend against these actions.
However, it is reasonably possible that these actions could result in outcomes
unfavorable to the Company. The Company is also involved in various other less
significant legal actions. While the Company currently believes that the amount
of the ultimate potential loss would not be material to the Company's financial
position, the outcome of these actions is inherently difficult to predict. In
the event of an adverse outcome, the ultimate potential loss could have a
material adverse effect on the Company's financial position or reported results
of operations in a
 
                                      F-12
<PAGE>   49
 
particular quarter. An unfavorable decision, particularly in patent litigation,
could require material changes in production processes and products or result in
the Company's inability to ship products or components found to have violated
third-party patent rights.
 
NOTE 8 -- COMMON STOCK
 
In May 1998, the Company declared a two-for-one stock split effected in the form
of a 100% stock dividend paid at the close of business June 26, 1998, to
shareholders of record on June 5, 1998. All earnings per common share amounts,
references to common stock, and stockholders' equity amounts have been restated
as if the stock dividend had occurred as of the earliest period presented.
 
In February 1997, the Company announced a program to repurchase up to 3,000,000
shares of common stock on an annual basis. The intent of this repurchase program
is to offset dilution associated with the Company's stock purchase and stock
option plans. In October 1997, the Company announced a program to repurchase an
additional number of shares of its common stock up to $800,000,000.
 
Under these programs, the Company repurchased and retired an aggregate of
8,822,500 and 18,349,000 shares of common stock during 1998 and 1997,
respectively, through a combination of privately negotiated and open market
repurchase transactions. The aggregate purchase price of these shares was
$272,365,000 and $572,026,000 after considering the effects of all purchase
price adjustments.
 
NOTE 9 -- EARNINGS PER COMMON SHARE
 
The following is a reconciliation between the basic and diluted EPS for income
before extraordinary item (in thousands, except per share amounts):
 
<TABLE>
<CAPTION>
                                                                       For the Year Ended
                                      ------------------------------------------------------------------------------------
                                          December 25, 1998            December 26, 1997            December 27, 1996
                                      --------------------------   --------------------------   --------------------------
                                       Income     EPS    Shares     Income     EPS    Shares     Income     EPS    Shares
                                      ------------------------------------------------------------------------------------
<S>                                   <C>        <C>     <C>       <C>        <C>     <C>       <C>        <C>     <C>
Basic EPS                             $198,248   $1.91   103,868   $231,817   $1.93   120,265   $170,792   $1.52   112,320
Effects of dilutive securities:
  Common stock equivalents                                 2,629                        1,959                        1,850
  Convertible debentures                                                255               289     15,050            15,740
                                       -------           -------    -------           -------    -------           -------
Diluted EPS                           $198,248   $1.86   106,497   $232,072   $1.89   122,513   $185,842   $1.43   129,910
                                       -------           -------    -------           -------    -------           -------
                                       -------           -------    -------           -------    -------           -------
</TABLE>
 
Options to purchase 358,128 shares of common stock were outstanding at December
25, 1998, but not included as common stock equivalents in the computation of
diluted EPS, because the exercise prices exceeded the average market price of
the Company's common stock during 1998.
 
NOTE 10 -- EMPLOYEE BENEFIT PLANS AND OPTIONS
 
EMPLOYEE STOCK PURCHASE PLAN
 
Under the Company's 1987 Employee Stock Purchase Plan (Purchase Plan), as
amended, employees may be offered the right to collectively purchase a maximum
of 600,000 shares of StorageTek's common stock, plus any remaining shares from
earlier offering periods, in consecutive six-month offering periods. As of
December 25, 1998, the Company had an aggregate of 4,421,400 common shares
reserved for issuance under the Purchase Plan. Eligible employees may contribute
up to 10% of their pay toward the purchase of StorageTek common stock at a price
equal to 85% of the lower of the fair market price on the first or the last day
of each offering period. Proceeds received from the issuance of shares are
credited to stockholders' equity in the fiscal year the shares are issued.
 
                                      F-13
<PAGE>   50
 
Under the Purchase Plan, the Company issued the following shares of common stock
with the weighted average fair value of the shares calculated using the
Black-Scholes option pricing model:
 
<TABLE>
<CAPTION>
                                                   1998        1997         1996
                                                 ----------------------------------
<S>                                              <C>         <C>         <C>
Shares issued                                     631,728     937,994     1,117,500
Weighted average fair value per share            $  10.90    $   5.32    $     4.68
Fair value assumptions:
  Dividend yield                                        0%          0%            0%
  Volatility                                        49.59%      36.40%        37.60%
  Risk-free interest rate                            5.00%       5.65%         5.68%
  Expected life (in months)                             6           6             6
</TABLE>
 
STOCK OPTION AND RESTRICTED STOCK PLANS
 
As of December 25, 1998, the Company had an aggregate of 8,687,533 common shares
reserved for issuance under its equity plans (Equity Plans). These plans provide
for the issuance of common shares pursuant to stock option exercises, restricted
stock awards and other equity based awards. There were 3,728,228 shares
available for grant under the Equity Plans as of December 25, 1998.
 
Stock options are granted under the Equity Plans with an exercise price equal to
the fair market value of the common stock on the date of grant and generally
vest over a period of between three and six years. Options granted under the
Equity Plans have a maximum term of 10 years from the date of grant.
 
The Company also has a Nonemployee Director Stock Option Plan (Director Plan)
under which the Company grants stock options to nonemployee directors for the
purchase of an aggregate maximum of 1,560,000 shares of common stock. Stock
options are granted with an exercise price equal to the fair market value of the
common stock on the date of grant. There were 1,107,572 shares reserved for
issuance and 531,668 shares available for grant under the Director Plan as of
December 25, 1998.
 
The following summarizes information with respect to options granted under the
Company's Equity and Director Plans:
 
<TABLE>
<CAPTION>
                                                                 Weighted Average
                                             Number of Shares     Exercise Price
                                             ------------------------------------
<S>                                          <C>                 <C>
Outstanding, December 29, 1995                   6,822,086            $13.39
  Granted                                        1,237,450             20.81
  Exercised                                     (1,827,124)            13.00
  Forfeited or expired                            (650,756)            15.58
                                             --------------      -----------
Outstanding, December 27, 1996                   5,581,656             14.91
  Granted                                        1,378,994             23.34
  Exercised                                     (1,208,794)            13.63
  Forfeited or expired                            (264,276)            14.82
                                             --------------      -----------
Outstanding, December 26, 1997                   5,487,580             17.31
  Granted                                        1,851,117             30.37
  Exercised                                     (1,365,723)            15.19
  Forfeited or expired                            (437,765)            21.51
                                             --------------      -----------
Outstanding, December 25, 1998                   5,535,209            $21.87
                                             --------------      -----------
                                             --------------      -----------
</TABLE>
 
                                      F-14
<PAGE>   51
 
The following table summarizes information concerning outstanding and
exercisable options as of December 25, 1998:
 
<TABLE>
<CAPTION>
                        Outstanding                      Exercisable
           --------------------------------------   ----------------------
                           Weighted
                            Average      Weighted                 Weighted
Range of                   Remaining     Average                  Average
Exercise     Number       Contractual    Exercise     Number      Exercise
  Price    Outstanding   Life in Years    Price     Exercisable    Price
- --------------------------------------------------------------------------
<S>        <C>           <C>             <C>        <C>           <C>
$ 0 - $15   1,640,955        5.78         $12.60     1,384,695     $12.39
 15 -  25   2,786,818        8.42          22.34       947,921      20.62
 25 -  35     749,308        9.10          30.37        37,860      29.02
 35 -  45     358,128        9.46          42.85        10,000      43.44
           ----------                               ----------
            5,535,209        7.79          21.87     2,380,476      16.07
           ----------                               ----------
           ----------                               ----------
</TABLE>
 
Restricted stock awards of the Company's common stock are made pursuant to its
Equity Plans at a purchase price per share equal to par value. Unearned
compensation, which is determined as the difference between par value and fair
market value of the Company's common stock on the date of the award, is charged
to stockholders' equity and amortized to expense over the vesting period of the
stock. The following summarizes information with respect to restricted stock.
The weighted average fair value of awards is calculated using the Black-Scholes
option pricing model:
 
<TABLE>
<CAPTION>
                                                     1998       1997        1996
                                                   --------------------------------
<S>                                                <C>        <C>        <C>
Outstanding, beginning of year                      320,762    451,620      679,980
Awarded                                              13,355      3,038
Vested                                              (24,358)   (94,918)    (195,040)
Forfeited                                           (48,838)   (38,978)     (33,320)
                                                   --------   --------   ----------
Outstanding, end of year                            260,921    320,762      451,620
                                                   --------   --------   ----------
                                                   --------   --------   ----------
Weighted average fair value of awards              $  35.40   $  24.65
Compensation expense, net (in thousands)           $    330   $    592   $    2,057
</TABLE>
 
EMPLOYEE PROFIT SHARING AND THRIFT PLAN
 
StorageTek has a Profit Sharing and Thrift Plan whereby participants may
contribute a portion of their compensation, subject to limits under the Internal
Revenue Code. Effective January 1, 1996, the plan provides for a matching
contribution by the Company equal to 50% of the participant's contribution for
each pay period, up to a maximum of 3% of the participant's base compensation
for the pay period. Company contributions in excess of the matching contribution
are contingent upon realization of profits by the Company which, at the sole
discretion of the Board of Directors, are adequate to justify a corporate
contribution.
 
The following contributions were made or authorized by the Company to the Profit
Sharing and Thrift Plan (in thousands of dollars):
 
<TABLE>
<CAPTION>
                                                          1998     1997      1996
                                                         --------------------------
<S>                                                      <C>      <C>       <C>
Matching contributions                                   $8,987   $ 7,772   $ 7,463
Additional contributions                                           11,100     5,550
                                                         ------   -------   -------
                                                         $8,987   $18,872   $13,013
                                                         ------   -------   -------
                                                         ------   -------   -------
</TABLE>
 
                                      F-15
<PAGE>   52
 
SFAS NO. 123
 
The Company applies the intrinsic value method set forth in APB No. 25 in
accounting for its stock-based compensation plans. Net income and earnings per
share as reported and as calculated pursuant to SFAS No. 123 to reflect the fair
value method of accounting for stock-based compensation plans were as follows
(in thousands, except per share amounts):
 
<TABLE>
<CAPTION>
                                                       Year Ended
                                      --------------------------------------------
                                      December 25,    December 26,    December 27,
                                          1998            1997            1996
                                      --------------------------------------------
<S>                                   <C>             <C>             <C>
Net income:
  As reported                           $198,248        $231,817        $180,327
  SFAS 123                               186,957         221,976         169,703
Basic earnings per share:
  As reported                           $   1.91        $   1.93        $   1.61
  SFAS 123                                  1.80            1.85            1.51
Diluted earnings per share:
  As reported                           $   1.86        $   1.89        $   1.50
  SFAS 123                                  1.78            1.83            1.32
</TABLE>
 
Compensation expense for the options granted is computed reflecting the actual
forfeitures of options with the respective years.
 
The following summarizes the weighted average fair value of options granted
using the Black-Scholes option pricing model:
 
<TABLE>
<CAPTION>
                                          1998            1997            1996
                                      --------------------------------------------
<S>                                   <C>             <C>             <C>
Weighted average fair value options
  granted                                $12.61          $ 9.89          $10.96
Fair value assumptions:
  Dividend yield                              0%              0%              0%
  Volatility                              44.41%          42.15%          52.00%
  Risk-free interest rate                  5.12%           6.25%           6.28%
  Expected life (in years)                  4.0             4.3             5.4
</TABLE>
 
NOTE 11 -- STOCKHOLDER RIGHTS PLAN
 
In 1990, the Board of Directors adopted a Stockholder Rights Plan (Rights Plan).
The Rights Plan is designed to deter coercive or unfair takeover tactics and to
prevent an acquiring entity from gaining control of the Company without offering
a fair price to all of the Company's shareholders.
 
Each right would entitle the holder of the Company's common stock to purchase
one one-hundredth of a share of Series B Junior Participating Preferred Stock at
an exercise price of $150, subject to adjustment to prevent dilution. The rights
are evidenced by the common stock certificates and will not separate from the
common stock until the earlier of (i) 20 days following the date on which any
person or entity acquires beneficial ownership of 15% or more of the common
stock (an Acquiring Person) and the right of redemption has not been reinstated;
or (ii) 10 days after a public announcement of a tender or exchange offer by any
person or entity if upon consummation such person would be an Acquiring Person.
Further, upon the occurrence of certain events described below, the rights
generally entitle each right holder (except the Acquiring Person) to purchase
that number of shares of the Company's common stock which equals the $150
exercise price of the right divided by one-half of the current market price of
the common stock. Those events generally include (i) 20 days after any person or
entity becomes an Acquiring Person; and (ii) if any person or entity becomes an
Acquiring Person and thereafter, (a) the Company is merged with or into an
Acquiring Person and the Company's common
 
                                      F-16
<PAGE>   53
 
stock is changed, converted or exchanged; or (b) 50% or more of the Company's
assets or earning power is sold; or (c) an Acquiring Person engages in one or
more "self-dealing" transactions as described in the Rights Agreement.
 
The Company is generally entitled to redeem the rights for $.01 per right at any
time prior to the earlier of the date on which any person or entity becomes an
Acquiring Person or August 31, 2000. The rights will expire on August 31, 2000,
unless redeemed or exchanged earlier by the Company pursuant to the Rights Plan.
 
NOTE 12 -- FINANCIAL INSTRUMENTS AND OFF-BALANCE-SHEET RISKS
 
FAIR VALUE OF FINANCIAL INSTRUMENTS
 
The carrying amounts of the Company's accounts receivable, accounts payable and
accrued liabilities are either equal to or approximate their fair values. The
carrying/commitment value and fair value of other financial instruments held by
the Company as of December 25, 1998, were as follows (in thousands of dollars):
 
<TABLE>
<CAPTION>
                                        Carrying/                     Unrealized
                                       Commitment         Fair          (Gain)
                                          Value          Value           Loss
                                       ------------------------------------------
<S>                                    <C>              <C>           <C>
Foreign currency options                $  8,885        $  4,684        $ 4,201
Foreign currency forward contracts            --              --             --
Promissory notes denominated in
  foreign currencies:
  Outstanding borrowings                  81,673          81,673
  Outstanding commitments                364,723         375,037         10,314
</TABLE>
 
See below for further discussion of foreign currency options and forward
contracts. See Note 5 for further discussion of the promissory notes denominated
in foreign currencies.
 
FOREIGN CURRENCY OPTIONS AND FORWARD EXCHANGE CONTRACTS
 
A significant portion of the Company's revenue is generated by its international
operations. As a result, the Company's operations and financial results can be
materially affected by changes in foreign currency exchange rates. In an attempt
to mitigate the impact of foreign currency fluctuations, the Company employs a
hedging program which utilizes foreign currency options and forward exchange
contracts. The Company does not hold or issue foreign currency options or
forward exchange contracts for trading purposes.
 
The Company periodically utilizes foreign currency options, generally with
maturities of less than one year, to hedge a portion of its exposure to
exchange-rate fluctuations in connection with anticipated revenue from its
international operations. The Company utilizes hedge accounting for its foreign
currency options with gains and losses associated with the options deferred and
recognized as an adjustment to the underlying revenue transactions. Purchased
foreign currency options with a face value of approximately $220,954,000 were
held as of December 25, 1998. The Company held no foreign currency options as of
December 26, 1997. The fair value of the options was estimated based on quotes
received from the respective counterparty. Deferred realized and unrealized
losses associated with the options will be recognized as an adjustment to the
associated revenue during 1999 in the Consolidated Statement of Operations.
 
The Company also utilizes forward exchange contracts, generally with maturities
of less than two months, to hedge its exposure to exchange-rate fluctuations in
connection with anticipated monetary assets and liabilities held in foreign
currencies and anticipated revenue from its international operations. The
Company held forward foreign exchange contracts with a face value of
approximately $140,732,000 as of December 25, 1998, and $61,355,000 as of
December 26, 1997. The carrying amounts of these
 
                                      F-17
<PAGE>   54
 
forward foreign exchange contracts equal their fair value as the contracts are
adjusted at each balance sheet date for changes in exchange rates. Gains and
losses on the forward contracts used to hedge monetary assets and liabilities
are recognized as incurred within SG&A on the Consolidated Statement of
Operations as adjustments to the foreign exchange gains and losses on the
translation of net monetary assets. Gains and losses on the forward contracts
used to hedge anticipated revenues are recognized as incurred as adjustments to
revenue.
 
The forward exchange contracts and foreign currency options do not subject the
Company to risk due to exchange rate movements, as gains and losses on the
contracts offset gains and losses on the transactions being hedged. The foreign
currency hedging instruments utilized by StorageTek are generally traded over
the counter. The Company does not believe there is significant credit risk
associated with these contracts, as the counterparties consist of major
international financial institutions, and the Company monitors the amount of the
contracts it enters into with any one party.
 
Losses associated with foreign currency translation adjustments and foreign
currency transactions, net of associated hedging results, aggregated $391,000 in
1998, compared to gains of $482,000 in 1997 and losses of $447,000 in 1996.
 
CONCENTRATIONS OF CREDIT RISK
 
Other financial instruments which potentially subject the Company to
concentrations of credit risk consist principally of cash investments, trade
receivables, and outstanding letters of credit under the Company's Revolver. The
Company has a cash investment policy which restricts investments to ensure
preservation of principal and maintenance of liquidity. Substantially all of the
Company's trade receivable balances are unsecured. As of December 25, 1998,
approximately 15% of the Company's outstanding accounts receivable balance was
due from IBM. The Company monitors this concentration and does not believe any
significant credit risk exists as of December 25, 1998. The concentration of
credit risk with respect to the remaining trade receivables is limited due to
the large number of customers comprising the Company's customer base, and their
dispersion across different industries and geographic areas.
 
NOTE 13 -- OPERATIONS OF BUSINESS SEGMENTS AND IN GEOGRAPHIC AREAS
 
SIGNIFICANT CUSTOMERS
 
In 1998, revenue from sales of storage products and software to IBM accounted
for approximately 20% of total revenue.
 
BUSINESS SEGMENTS
 
The Company is organized into three reportable segments based on the definitions
of segments provided under SFAS No. 131: storage products, storage services and
storage management software. The storage products segment sells information
storage tape, disk and network products. The storage services segment provides
support services for the Company's and third-party products, integration
services, IT business consulting and technology services. The storage management
software segment sells and licenses software products.
 
The accounting policies utilized in reporting these segments are the same as
those described in Note 1, "Summary of Significant Accounting Policies." The
Company does not have any intersegment revenue and evaluates segment performance
based on gross profit. The segment gross profit equals the consolidated gross
profit and the Company does not allocate research and product development costs;
selling, general, administrative and other income and expense; interest income;
interest expense;
 
                                      F-18
<PAGE>   55
 
provision for income taxes; or extraordinary items to the segments. The revenue
and gross profit by segment is as follows (in thousands of dollars):
 
<TABLE>
<CAPTION>
                                                   1998         1997         1996
                                                ------------------------------------
<S>                                             <C>          <C>          <C>
Revenue
  Storage products                              $1,520,647   $1,495,038   $1,452,871
  Storage services                                 633,821      584,016      541,963
  Storage management software                      103,754       65,602       44,716
                                                ----------   ----------   ----------
     Total revenue                              $2,258,222   $2,144,656   $2,039,550
                                                ----------   ----------   ----------
                                                ----------   ----------   ----------
Gross profit
  Storage products                              $  688,050   $  669,914   $  567,285
  Storage services                                 273,662      265,521      262,850
  Storage management software                       78,698       37,691       16,638
                                                ----------   ----------   ----------
     Total gross profit                         $1,040,410   $  973,126   $  846,773
                                                ----------   ----------   ----------
                                                ----------   ----------   ----------
</TABLE>
 
All of the Company's assets are retained and analyzed at the corporate level and
are not allocated to the individual segments. Amortization of spare parts
associated with the storage services segment is $19,407,000, $12,568,000 and
$9,159,000 for 1998, 1997, and 1996, respectively. See Note 1 for information
regarding the amortization of capitalized software associated with the storage
management software segment. Depreciation on fixed assets and amortization of
goodwill, which aggregated $91,284,000, $79,052,000 and $145,048,000 in 1998,
1997, and 1996, respectively, is associated with corporate assets and is not
separately identifiable within the reportable segments.
 
GEOGRAPHIC AREAS
 
Revenue and long-lived assets by geographic area are based on the country in
which the subsidiary is legally domiciled. Revenue and long-lived assets for
Europe are reported in aggregate as there are no individual subsidiaries with
revenue or long-lived assets which exceed 10% of the consolidated amounts.
Geographic areas other than the United States and Europe account for less than
10% of the consolidated revenue and identifiable assets, and are combined and
shown in the table below as "Other." Unconsolidated revenue and long-lived
assets for each geographic area are shown below (in thousands of dollars):
 
<TABLE>
<CAPTION>
                                                   1998         1997         1996
                                                ------------------------------------
<S>                                             <C>          <C>          <C>
Revenue:
  United States(1)                              $1,502,992   $1,478,796   $1,281,118
  Europe                                           577,635      499,297      587,951
  Other                                            177,595      166,563      170,481
                                                ----------   ----------   ----------
     Total revenue                              $2,258,222   $2,144,656   $2,039,550
                                                ----------   ----------   ----------
                                                ----------   ----------   ----------
Long-lived assets:
  United States                                 $  302,692   $  285,890   $  333,150
  Europe                                            45,438       51,991       57,619
  Other                                              4,844        4,348        2,980
                                                ----------   ----------   ----------
     Total long-lived assets                    $  352,974   $  342,229   $  393,749
                                                ----------   ----------   ----------
                                                ----------   ----------   ----------
</TABLE>
 
- ---------------
 
(1) U.S. revenue from unaffiliated customers includes international export sales
    to customers of $88,654,000 in 1998; $59,359,000 in 1997; and $67,636,000 in
    1996.
 
                                      F-19
<PAGE>   56
 
NOTE 14 -- QUARTERLY INFORMATION (UNAUDITED)
 
The consolidated results of operations on a quarterly (13-week) basis were as
follows (in thousands of dollars, except per share amounts):
 
<TABLE>
<CAPTION>
                                             Quarter Ended 1998
                             ---------------------------------------------------
                             March 27    June 26     September 25    December 25
                             ---------------------------------------------------
<S>                          <C>         <C>         <C>             <C>
Revenue                     $484,891     $542,306      $571,060       $659,965
Cost of revenue              253,389      284,746       304,788        374,889
                             -------     --------    -----------     -----------
  Gross profit               231,502      257,560       266,272        285,076
Operating expenses           170,795      172,988       183,835        199,987
                             -------     --------    -----------     -----------
  Operating profit            60,707       84,572        82,437         85,089
Interest income (expense), net 4,663        3,258          (714)          (264)
                             -------     --------    -----------     -----------
  Income before income
     taxes                    65,370       87,830        81,723         84,825
Provision for income taxes   (24,800)     (33,400)      (31,100)       (32,200)
                             -------     --------    -----------     -----------
  Net income                $ 40,570     $ 54,430      $ 50,623       $ 52,625
                             -------     --------    -----------     -----------
                             -------     --------    -----------     -----------
Earnings per common share:
  Basic                     $   0.38     $   0.51      $   0.50       $    .53
                             -------     --------    -----------     -----------
                             -------     --------    -----------     -----------
  Diluted                   $   0.37     $   0.50      $   0.48       $    .52
                             -------     --------    -----------     -----------
                             -------     --------    -----------     -----------
</TABLE>
 
<TABLE>
<CAPTION>
                                             Quarter Ended 1997
                             ---------------------------------------------------
                             March 28    June 27     September 26    December 26
                             ---------------------------------------------------
<S>                          <C>         <C>         <C>             <C>
Revenue                     $438,595     $517,024      $525,168       $663,869
Cost of revenue              241,672      283,284       285,383        361,191
                             -------     --------    -----------     -----------
  Gross profit               196,923      233,740       239,785        302,678
Operating expenses           148,237      166,375       173,042        194,711
                             -------     --------    -----------     -----------
  Operating profit            48,686       67,365        66,743        107,967
Interest income, net           5,603        6,619         7,987          5,147
                             -------     --------    -----------     -----------
  Income before income
     taxes                    54,289       73,984        74,730        113,114
Provision for income taxes   (14,700)     (20,000)      (20,200)       (29,400)
                             -------     --------    -----------     -----------
  Net income                $ 39,589     $ 53,984      $ 54,530       $ 83,714
                             -------     --------    -----------     -----------
                             -------     --------    -----------     -----------
Earnings per common share:
  Basic                     $   0.32     $   0.44      $   0.44       $    .74
                             -------     --------    -----------     -----------
                             -------     --------    -----------     -----------
  Diluted                   $   0.32     $   0.43      $   0.44       $    .73
                             -------     --------    -----------     -----------
                             -------     --------    -----------     -----------
</TABLE>
 
                                      F-20

<PAGE>   57
 
                       REPORT OF INDEPENDENT ACCOUNTANTS
 
To the Stockholders and
Board of Directors of
Storage Technology Corporation
 
In our opinion, the consolidated financial statements listed in the index
appearing under Item 14.(a)1. and 2. on page 31 present fairly, in all material
respects, the financial position of Storage Technology Corporation and its
subsidiaries at December 25, 1998 and December 26, 1997, and the results of
their operations and their cash flows for each of the three years in the period
ended December 25, 1998, in conformity with generally accepted accounting
principles. These financial statements are the responsibility of the Company's
management; our responsibility is to express an opinion on these financial
statements based on our audits. We conducted our audits of these statements in
accordance with generally accepted auditing standards which require that we plan
and perform the audit to obtain reasonable assurance about whether the financial
statements are free of material misstatement. An audit includes examining, on a
test basis, evidence supporting the amounts and disclosures in the financial
statements, assessing the accounting principles used and significant estimates
made by management, and evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for the opinion expressed
above.
 
PRICEWATERHOUSECOOPERS LLP
 
Denver, Colorado
February 19, 1999
 
                                      F-21
<PAGE>   58
 
                STORAGE TECHNOLOGY CORPORATION AND SUBSIDIARIES
                                  SCHEDULE II
                 VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
                           (In Thousands of Dollars)
 
<TABLE>
<CAPTION>
                                                                   Deductions
                                                                    Accounts
                                    Balance      Additions         Receivable
                                   Beginning     Charged to        Written Off      Balance End
                                    of Year    Other Expenses   Net of Recoveries     of Year
                                   ------------------------------------------------------------
<S>                                <C>         <C>              <C>                 <C>
Allowance for doubtful accounts
  on accounts receivable:
 
  December 25, 1998                 $17,924       $ 6,664            $ 4,164          $20,424
                                   --------    -----------      ------------        ---------
                                   --------    -----------      ------------        ---------
  December 26, 1997                 $12,907       $ 7,625            $ 2,608          $17,924
                                   --------    -----------      ------------        ---------
                                   --------    -----------      ------------        ---------
  December 27, 1996                 $14,665       $ 3,838            $ 5,596          $12,907
                                   --------    -----------      ------------        ---------
                                   --------    -----------      ------------        ---------
</TABLE>
 
<TABLE>
<CAPTION>
                                                 Additions
                                    Balance      Charged to
                                   Beginning      Cost of          Reductions       Balance End
                                    of Year       Revenue          Write-offs         of Year
                                   ------------------------------------------------------------
<S>                                <C>         <C>              <C>                 <C>
Inventory reserves:
 
  December 25, 1998                 $45,862       $26,209            $32,167          $39,904
                                   --------    -----------      ------------        ---------
                                   --------    -----------      ------------        ---------
  December 26, 1997                 $51,338       $40,915            $46,391          $45,862
                                   --------    -----------      ------------        ---------
                                   --------    -----------      ------------        ---------
  December 27, 1996                 $45,290       $55,771            $49,723          $51,338
                                   --------    -----------      ------------        ---------
                                   --------    -----------      ------------        ---------
</TABLE>
 
                                      F-22
<PAGE>   59
 
                                 EXHIBIT INDEX
 
<TABLE>
   <S>                      <C>
   3.1                      Restated Certificate of Incorporation of Storage Technology
                            Corporation dated July 28, 1987 (filed as Exhibit 3 to the
                            Company's Quarterly Report on Form 10-Q for the quarter
                            ended September 25, 1987, and as Exhibit 3.1(ii) to the
                            Company's Quarterly Report on Form 10-Q, for the quarter
                            ended September 29, 1995, filed on November 13, 1995, and
                            incorporated herein by reference).
   3.2                      Certificate of Amendment dated May 22, 1989, to the Restated
                            Certificate of Incorporation dated July 28, 1987 (filed as
                            Exhibit (c)(1) to the Company's Current report on Form 8-K
                            dated June 2, 1989, and incorporated herein by reference).
   3.3                      Certificate of Second Amendment dated June 2, 1992, to the
                            Restated Certificate of Incorporation dated July 28, 1987
                            (filed as Exhibit 3 to the Company's Quarterly Report on
                            Form 10-Q for the quarter ended June 26, 1992, and
                            incorporated herein by reference).
   3.4                      Restated Bylaws of Storage Technology Corporation, as
                            amended through November 11, 1998 (filed as Exhibit 3.1 to
                            the Company's Current Report on Form 8-K dated November 19,
                            1998, and incorporated herein by reference).
   4.1                      Specimen Certificate of Common Stock, $0.10 par value of
                            Registrant (filed as Exhibit (c)(2) as to the Company's
                            Current Report on Form 8-K dated June 2, 1989, and
                            incorporated herein by reference).
   4.2                      Rights Agreement dated as of August 20, 1990, between
                            Storage Technology Corporation and First Fidelity Bank,
                            N.A., New Jersey, Rights Agent (filed as Exhibit 4.1 to the
                            Company's Current Report on Form 8-K dated August 20, 1990,
                            and incorporated herein by reference).
   4.3                      Certificate of Designations of Series B Junior Participating
                            Preferred Stock (filed as Exhibit A to Exhibit 4.1 to the
                            Company's Current Report on Form 8-K dated August 8, 1990,
                            and incorporated herein by reference).
   10.1(1)                  1987 Employee Stock Purchase Plan, as amended (filed as part
                            of the Company's Registration Statement on Form S-8 filed
                            September 8, 1994, File No. 33-42818, and incorporated
                            herein by reference).
   10.2(1)                  1995 Equity Participation Plan (filed as Exhibit 10.1 to the
                            Company's Quarterly Report on Form 10-Q for the quarter
                            ended June 30, 1995, filed on August 11, 1995, and
                            incorporated herein by reference).
   10.3(1)                  Storage Technology Corporation MBO Plan (filed as Exhibit
                            10.1 to the Company's Quarterly Report on Form 10-Q for the
                            quarter ended July 1, 1994, filed on August 12, 1994, and
                            incorporated herein by reference).
   10.4(1)                  Tenth Amendment and Restatement of Storage Technology
                            Corporation 1987 Employee Stock Purchase Plan (filed as
                            Exhibit 10.1 to the Company's Quarterly Report on Form 10-Q
                            for the quarter ended June 28, 1996, filed on August 12,
                            1996, and incorporated herein by reference).
   10.5(1)                  Storage Technology Corporation Amended and Restated Stock
                            Option Plan for Non-Employee Directors (filed as Exhibit
                            10.2 to the Company's Quarterly Report on Form 10-Q for the
                            quarter ended June 28, 1996, filed on August 12, 1996, and
                            incorporated herein by reference).
</TABLE>
 
- ------------------------
 
1   Contract or compensatory plan or arrangement in which directors and/or
    officers participate.
<PAGE>   60
<TABLE>
   <S>                      <C>
   10.6(1)                  Employment Agreement between the Company and David E. Weiss,
                            dated June 24, 1996 (filed as Exhibit 10.3 to the Company's
                            Quarterly Report on Form 10-Q for the quarter ended June 28,
                            1996, filed on August 12, 1996, and incorporated herein by
                            reference).
   10.7(1)                  Storage Technology Corporation 1995 Equity Participation
                            Plan, as amended September 1996 (filed as Exhibit 10.3 to
                            the Company's Quarterly Report on Form 10-Q for the quarter
                            ended September 27, 1996, filed on November 8, 1996, and
                            incorporated herein by reference).
   10.8(1)                  Storage Technology Corporation 1995 Equity Participation
                            Plan, as amended February 1997 (filed as Exhibit 10.1 to the
                            Company's Quarterly Report on Form 10-Q for the quarter
                            ended June 27, 1997, filed on August 8, 1997, and
                            incorporated herein by reference).
   10.9                     Contingent Multicurrency Note Purchase Commitment Agreement
                            dated as of December 12, 1996, between the Company and Bank
                            of America National Trust and Savings Association (filed as
                            Exhibit 10.29 to the Company's Annual Report on Form 10-K
                            for the year ended December 27, 1996, and incorporated
                            herein by reference).
   10.10                    Eleventh Amendment to the Storage Technology Corporation
                            1987 Employee Stock Purchase Plan, as amended (filed as
                            Exhibit 10.23 to the Company's Annual Report on Form 10-K
                            for the year ended December 26, 1997, and incorporated
                            herein by reference).
   10.11(1)                 Agreement between the Company and Gary Francis, dated August
                            19, 1997(filed as Exhibit 10.25 to the Company's Annual
                            Report on Form 10-K for the year ended December 26, 1997,
                            and incorporated herein by reference).
   10.12(1)                 Employment Agreement between the Company and Victor Perez,
                            dated February 17, 1995 (filed as Exhibit 10.26 to the
                            Company's Annual Report on Form 10-K for the year ended
                            December 27, 1996, and incorporated herein by reference).
   10.13(3)                 OEM Agreement between the Company and International Business
                            Machines Corporation ("IBM") dated December 18, 1997
                            (redacted copy filed as Exhibit 10.28 to the Company's
                            Annual Report on Form 10-K for the fiscal year ended
                            December 26, 1997, and incorporated herein by reference).
   10.14(2)                 Amendment No. 1 to OEM Agreement dated March 19, 1998,
                            between the Company and IBM. Concurrent with the filing of
                            this Annual Report on Form 10-K, the Company is submitting
                            to the Commission a request for confidential treatment to
                            omit certain information pursuant to Rule 24b-2 of the
                            Securities Exchange act of 1934, as amended.
   10.15(2)                 Amendment No. 2 to OEM Agreement dated April 28, 1998,
                            between the Company and IBM. Concurrent with the filing of
                            this Annual Report on Form 10-K, the Company is submitting
                            to the Commission a request for confidential treatment to
                            omit certain information pursuant to Rule 24b-2 of the
                            Securities Exchange act of 1934, as amended.
</TABLE>
 
- ------------------------
 
1   Contract or compensatory plan or arrangement in which directors and/or
    officers participate.

2   Indicates exhibits filed with this Annual Report on Form 10-K.
 
3   Confidential treatment granted on certain portion of this agreement.
<PAGE>   61
 
<TABLE>
<S>                       <C>
10.16(2)                  Amendment No. 3 to OEM Agreement dated September 19, 1998, between the Company and
                          IBM. Concurrent with the filing of this Annual Report on Form 10-K, the Company is
                          submitting to the Commission a request for confidential treatment to omit certain
                          information pursuant to Rule 24b-2 of the Securities Exchange act of 1934, as amended.
10.17(2)                  Amendment No. 4 to OEM Agreement dated September 19, 1998, between the Company and
                          IBM. Concurrent with the filing of this Annual Report on Form 10-K, the Company is
                          submitting to the Commission a request for confidential treatment to omit certain
                          information pursuant to Rule 24b-2 of the Securities Exchange act of 1934, as amended.
10.18                     Credit Agreement dated as of October 23, 1997, among the Company and Bank of America
                          National Trust and Savings Association, as Agent, Swingline Bank, and Letter of Credit
                          Issuing Bank, and the other financial institutions party thereto (filed as Exhibit
                          10.28 to the Company's Annual Report on Form 10-K for the year ended December 26,
                          1997, and incorporated herein by reference).
10.19(2)                  Second Amendment to Second Amended and Restated Contingent Multicurrency Note Purchase
                          Commitment Agreement dated November 20, 1998, between Bank of America National Trust
                          and Savings Association and the Company.
10.20(1/2)                Employment Agreement between Bruce S. Taafe and the Company.
21.0(2)                   Subsidiaries of Registrant.
23.1(2)                   Consent of PricewaterhouseCoopers LLP.
24.0(2)                   Power of Attorney (See Page 35).
27.0(2)                   Financial Data Schedule.
</TABLE>
 
- ------------------------
 
1   Contract or compensatory plan or arrangement in which directors and/or
officers participate.
 
2   Indicates exhibits filed with this Annual Report on Form 10-K.

<PAGE>   1

                                                                   Exhibit 10.14

                             CONFIDENTIAL TREATMENT


                     THE FOLLOWING IS A REDACTED VERSION OF
                      AMENDMENT NO. 1 TO THE OEM AGREEMENT
                          DATED AS OF DECEMBER 18, 1997
                        BY AND BETWEEN STORAGE TECHNOLOGY
                     CORPORATION AND INTERNATIONAL BUSINESS
                              MACHINES CORPORATION.

                       THIS MATERIAL IS BEING SUBMITTED IN
                          CONNECTION WITH A REQUEST FOR
                       CONFIDENTIAL TREATMENT PURSUANT TO
                         RULE 24b-2 UNDER THE SECURITIES
                            AND EXCHANGE ACT OF 1934



<PAGE>   2


March 19, 1998

[**]
Storage Technology Corporation
2270 South 88th Street
Louisville, Colorado 80028-0001


     Re:  Amendment No. 1 
          OEM Agreement dated December 18, 1997 between International Business 
          Machines Corporation and Storage Technology Corporation

Dear [**]:

This letter is being sent to amend certain terms of the OEM Agreement. The
amendments follow:

A.   The first sentence of Section 11.11 of the base OEM Agreement is
replaced with the following sentence:

"Except as otherwise provided in [**] Products and Upgrades that are supplied to
IBM hereunder will consist of new parts and components."

B.   The person responsible for receiving notices for IBM related to
forecasts, orders and shipments in Section 26.3 of the base OEM Agreement is
changed from [**] to [**].

C.   The following footnote is added after the Volume Date of [**] for the
[**] and [**] Deliverables: " [**]

D.   The "Note" in the last paragraph of Section 6, i.e., Deliverables,
Schedules and Adjustments, of Attachment 1 to Exhibit 3, i.e., the Statement of
Work, is deleted in its entirety.

All other terms and conditions of the above-referenced agreement that are
unaffected by this amendment shall remain in full force and effect. If your
company agrees with the foregoing, please indicate its acceptance by signing
both copies of this letter, and returning them to me for IBM's execution.

Sincerely,



[**]



ACCEPTED AND AGREED TO:

STORAGE TECHNOLOGY                                        INTERNATIONAL BUSINESS
CORPORATION                                               MACHINES CORPORATION

[**]                                                      [**]



<PAGE>   1

                                                                   Exhibit 10.15


                             CONFIDENTIAL TREATMENT


                     THE FOLLOWING IS A REDACTED VERSION OF
                      AMENDMENT NO. 2 TO THE OEM AGREEMENT
                          DATED AS OF DECEMBER 18, 1997
                        BY AND BETWEEN STORAGE TECHNOLOGY
                     CORPORATION AND INTERNATIONAL BUSINESS
                              MACHINES CORPORATION.

                       THIS MATERIAL IS BEING SUBMITTED IN
                          CONNECTION WITH A REQUEST FOR
                       CONFIDENTIAL TREATMENT PURSUANT TO
                         RULE 24b-2 UNDER THE SECURITIES
                            AND EXCHANGE ACT OF 1934



<PAGE>   2



April 28, 1998

[**]
Storage Technology Corporation
2270 South 88th Street
Louisville, Colorado 80028-0001


     Re:  Amendment No. 2 
          OEM Agreement dated December 18, 1997 between International Business 
          Machines Corporation and Storage Technology Corporation (the "OEM 
          Agreement")

Dear [**]:

This letter is being sent to amend certain terms of the OEM Agreement. The
following amendments are made to Section 6, i.e., Deliverables, Schedules and
Adjustments, of Attachment 1 to Exhibit 3, i.e., the Statement of Work:

A.   The [**] Deliverable is replaced with the following.

                                [**] DELIVERABLE
                                 PDP DATE: [**]
                 SPECIFIED FUNCTIONS CONTAINING [**] DELIVERABLE

<TABLE>
<CAPTION>
DELIVERABLE              TYPE       ESP DATE        VOLUME          ADJUSTMENT
- -----------              ----       --------        ------          ----------
<S>                     <C>         <C>             <C>            <C>   
  [**]                   [**]        [**]            [**]              [**]
</TABLE>


B.   The volume date for PPRC - Remote Copy in the [**] Deliverable is changed
     from [**] to [**]. The adjustment level is changed from [**] to [**].

All other terms and conditions of the OEM Agreement that are unaffected by this
amendment shall remain in full force and effect. If your company agrees with the
foregoing, please indicate its acceptance by signing both copies of this letter,
and returning them to me for IBM's execution.

Sincerely,

[**]

ACCEPTED AND AGREED TO:
                                                         INTERNATIONAL BUSINESS
STORAGE TECHNOLOGY                                       MACHINES CORPORATION
CORPORATION

[**]                                                     [**]




<PAGE>   1


                                                                   Exhibit 10.16

                             CONFIDENTIAL TREATMENT


                     THE FOLLOWING IS A REDACTED VERSION OF
                      AMENDMENT NO. 3 TO THE OEM AGREEMENT
                          DATED AS OF DECEMBER 18, 1997
                        BY AND BETWEEN STORAGE TECHNOLOGY
                     CORPORATION AND INTERNATIONAL BUSINESS
                              MACHINES CORPORATION.

                       THIS MATERIAL IS BEING SUBMITTED IN
                          CONNECTION WITH A REQUEST FOR
                       CONFIDENTIAL TREATMENT PURSUANT TO
                         RULE 24b-2 UNDER THE SECURITIES
                            AND EXCHANGE ACT OF 1934



<PAGE>   2



September 19, 1998

[**]
Storage Technology Corporation
2270 South 88th Street
Louisville, Colorado 80028-0001


     Re: Amendment No. 3 
         OEM Agreement dated December 18, 1997, as amended, between 
         International Business Machines Corporation and Storage Technology 
         Corporation (the "OEM Agreement")

Dear [**]:

This letter is an amendment to the above-referenced OEM Agreement. The following
changes are hereby made and agreed upon by International Business Machines
Corporation ("IBM") and Storage Technology Corporation ("STK") to such
agreement:

1.   The following is added as a separate paragraph in Section 6.2 of the base
     OEM agreement:

     "Notwithstanding anything to the contrary, if IBM submits to STK during the
     period from [**] to [**] a [**] in accordance with [**] that [**] less than
     [**] for the immediately following quarter, then such [**] shall be
     considered by the Parties as a [**] for the [**] in which IBM will be
     entitled to purchase [**] from STK under the Agreement, and IBM will submit
     to STK a [**] for such [**] that have been [**] the beginning of such
     [**]."

2.   The payment term of [**] for 1999 or later in Section 7.10(a) of the base
     OEM agreement is changed to [**].

3.   The maximum percentage of [**] in Section 10.3 of the base OEM agreement is
     changed to [**]. In addition, the following sentence is added to the end of
     Section 10.3 of the base OEM agreement: "Notwithstanding the foregoing, the
     [**] shall not apply to the monthly build forecast that IBM previously
     submitted to STK at the beginning of [**].

4.   The following is added as Section 3.8 to Attachment 1 to Exhibit 3, i.e.,
     the Statement of Work: 

     "STK shall [**] into [**] that are to be provided by [**] to [**] under the
     Agreement by [**] to be provided by, IBM."



<PAGE>   3


5.   The description of [**] in Section 4.3(c), Funding of Deliverables, in
     Attachment 1 to Exhibit 3, i.e., Statement of Work, is changed to the
     following: [**].

6.   The description of [**] in Section 4.3(c), Funding of Deliverables, in
     Attachment 1 to Exhibit 3 i.e., Statement of Work, is changed to the
     following: [**] as described in the previously executed Amendment No. 2 to
     the OEM Agreement.

7.   The [**] Deliverable that appears in Section 6, Deliverables, Schedules and
     Adjustments, of Attachment 1 to Exhibit 3 i.e., the Statement of Work, is
     replaced with the following:

<TABLE>
<CAPTION>
"Deliverable         Type          ESP Date          Volume         Adjustment
- ------------         ----          --------          ------         ----------
<S>                  <C>           <C>              <C>             <C>
   [**]              [**]            [**]             [**]             [**]
</TABLE>


8.   The following footnote is added to the description of [**] for [**]
     products that appears in the [**] Deliverable in Section 6, Deliverables,
     Schedules and Adjustments, of Attachment 1 to Exhibit 3, i.e., the
     Statement of Work:

     [**]

9.   The third paragraph in Section E (1), Adjustment for Failure to Meet Volume
     Date, of Appendix B to Attachment 1 of Exhibit 3 i.e., Completion and
     Acceptance Criteria, that begins with "If the Parties agree on ...." is
     replaced with the following paragraph:

     "If StorageTek fails to meet the Volume Date for [**] associated with the
     [**] Deliverable, then IBM shall receive [**] to be used against its [**]
     that is equal to [**], as stated below, for each failure. If StorageTek
     fails to meet the Volume Date for [**] associated with the [**]
     Deliverable, then IBM shall receive [**] to be used against its [**] that
     is equal to [**], as stated below, for each failure."

10.  The words ", including [**] for [**] are added after the word "software"
     that appears in the fourth line of Section 3.1(e), Grant of Licenses, in
     Attachment 2 to Exhibit 3, i.e., Description of Licensed Works.

11.  The [**] of [**] for each workload in Schedule 5 of Appendix A of
     Attachment 1 to Exhibit 3, i.e., the Statement of Work, is changed to [**].
     In addition, the [**] of [**] in Schedule 5 of Appendix A of Attachment 1
     to Exhibit 3, i.e., the Statement of Work, is changed to [**].

12.  The paragraph in Section 26.3, Notices, of the base OEM agreement that
     begins with "Either Party may change any address at which ...." is changed
     to "Either Party may change any person who, or address at which it, will
     receive notices by notifying the other Party in writing."


                                       2

<PAGE>   4


All other terms and conditions of the OEM Agreement that are unaffected by this
amendment shall remain in full force and effect. If your company agrees with the
foregoing, please indicate its acceptance by signing both copies of this letter,
and returning them to me for IBM's execution.

Sincerely,



[**]


ACCEPTED AND AGREED TO:
STORAGE TECHNOLOGY                                       INTERNATIONAL BUSINESS
CORPORATION                                              MACHINES CORPORATION

[**]                                                     [**]






                                       3



<PAGE>   1

                                                                   Exhibit 10.17


                     THE FOLLOWING IS A REDACTED VERSION OF
                      AMENDMENT NO. 4 TO THE OEM AGREEMENT
                          DATED AS OF DECEMBER 18, 1997
                        BY AND BETWEEN STORAGE TECHNOLOGY
                     CORPORATION AND INTERNATIONAL BUSINESS
                              MACHINES CORPORATION.

                       THIS MATERIAL IS BEING SUBMITTED IN
                          CONNECTION WITH A REQUEST FOR
                       CONFIDENTIAL TREATMENT PURSUANT TO
                         RULE 24b-2 UNDER THE SECURITIES
                            AND EXCHANGE ACT OF 1934




<PAGE>   2








September 19, 1998

[**]
Storage Technology Corporation
2270 South 88th Street
Louisville, Colorado 80028-0001

     Re:  Amendment No. 4 
          OEM Agreement dated December 18, 1997, as amended, between 
          International Business Machines Corporation and Storage Technology 
          Corporation (the "OEM Agreement")

Dear [**]:

This letter is an amendment to the above-referenced OEM Agreement. The following
changes are hereby made and agreed upon by International Business Machines
Corporation ("IBM") and Storage Technology Corporation ("STK") to such
agreement:

1.   The enclosed Attachment A to this letter that pertains to Iceberg pricing
     for the years [**] and [**] supersedes and replaces in its entirety the
     [**] for the year [**] that is contained in Attachment 1 to Exhibit 1,
     Product Pricing.

2.   The following items are added to [**] in Attachment 2 to Exhibit 1, [**]:

     [**]

3.   Section (a) of Attachment 2 to Exhibit 1, [**], is replaced with the
     following:

     [**]

4.   The following is added to Attachment 2 to Exhibit 1, [**], of the OEM
     Agreement:

     [**]

5.   The last two lines in the table of [**] that are in Section 1, Definition
     of Consigned Goods, in Exhibit 4, Consignment Agreement, are replaced by
     the following lines:

     [**]

6.   [**] relative to the terms of the [**] will not apply to [**] and
     [**]Products delivered [**].

All other terms and conditions of the OEM Agreement that are unaffected by this
amendment shall remain in full force and effect. If your company agrees with the
foregoing, please indicate its acceptance by signing both copies of this letter,
and returning them to me for IBM's execution.

Sincerely,



[**]

ACCEPTED AND AGREED TO:
STORAGE TECHNOLOGY                                        INTERNATIONAL BUSINESS
CORPORATION                                               MACHINES CORPORATION

[**]`                                                     [**]



<PAGE>   3


                                  ATTACHMENT A
                                  ------------



                                      [**]






                                       2

<PAGE>   1
                                                                   EXHIBIT 10.19


           SECOND AMENDMENT TO SECOND AMENDED AND RESTATED CONTINGENT
                MULTICURRENCY NOTE PURCHASE COMMITMENT AGREEMENT


     THIS AMENDMENT (this "Amendment"), dated as of November 20, 1998, is made
to the Second Amended and Restated Contingent Multicurrency Note Purchase
Commitment Agreement, dated as of January 15, 1998 (as heretofore or hereafter
amended, modified or supplemented from time to time and in effect, the
"Agreement"), between Storage Technology Corporation ("Borrower") and Bank of
America National Trust and Savings Association ("BofA"). Capitalized terms used
but not otherwise defined herein shall have the meanings assigned to such terms
by the Agreement.

     WHEREAS, Borrower and BofA desire to amend and supplement the Agreement as
hereinafter set forth.

     NOW, THEREFORE, in consideration of the premises and the mutual agreements
herein contained, the parties hereto agree as follows:


                                    ARTICLE I
                             AMENDMENTS TO AGREEMENT

     Section 1.1   Amendment to Definition of "LIBOR Fixing Date". Section
1.02(a)(ii) of the Agreement is hereby amended and restated to read in its
entirety as follows:

     "LIBOR Fixing Date" means each date which is specified as a "LIBOR Fixing
Date" on Schedule II hereto, as in effect from time to time, and is also
designated in any Supplement as a LIBOR Fixing Date, provided, that Borrower
shall specify LIBOR Fixing Dates so that the LIBOR Fixing Date applicable to any
Purchase Date shall be the third Eurodollar Business Day preceding such Purchase
Date.

     Section 1.2   Amendment to Definition of "Maturity Date". Section
1.02(a)(iv)(A) of the Agreement is hereby amended and restated to read in its
entirety as follows:

     (A) No Maturity Date shall fall less than four Eurodollar Business Days
after the immediately preceding Determination Date, unless otherwise agreed by
Borrower and BofA, it being hereby agreed that (i) the Determination Date
falling on December 23, 1998 will have a related Maturity Date falling on
December 28, 1998, and (ii) the Determination Date falling on December 29, 1999
will have a related Maturity Date falling on January 4, 2000;

     Section 1.3   Amendment to Section 1.02(a). The last sentence of Section
1.02(a) of the Agreement is hereby amended and restated to read in its entirety
as follows:



<PAGE>   2

     In the event that the date specified as a LIBOR Fixing Date, a
Determination Date or a Maturity Date in Schedule II differs from the date so
specified in any Supplement, the Supplement shall control.

     Section 1.4   Amendment to Section 6.01(h)(ii)(A). Section 6.01(h)(ii)(A) 
of the Agreement is hereby amended and restated to read in its entirety as
follows:

          (A) on such Purchase Date, after giving effect to any payment of
     Purchase Price and any payment of principal and interest on any outstanding
     Notes on such Purchase Date, the Aggregate Purchase Price does not exceed
     $85,000,000;

     Section 1.5   Amendment to Section 6.01(h)(ii)(C). Section 6.01(h)(ii)(C) 
of the Agreement is hereby amended and restated to read in its entirety as
follows:

          (C) as of the last day of the immediately preceding Fiscal Quarter,
     for which a Compliance Certificate has been delivered pursuant to Section
     6.01(g)(vii), the Available Cash Amount, as shown in such Compliance
     Certificate, is greater than $200,000,000; and

     Section 1.6   Amendment to Schedule II. Schedule II to the Agreement is
hereby amended and restated in its entirety to read as set forth in Exhibit A
attached hereto.

     Section 1.7   Amendment to Supplements. Annex 1 to each of the Supplements
dated August 27, 1997, January 7, 1998, May 19, 1998, August 26, 1998, August
28, 1998 and October 9, 1998, is hereby amended and restated in its entirety to
read as set forth in Exhibit B-1, Exhibit B-2, Exhibit B-3, Exhibit B-4, Exhibit
B-5 and Exhibit B-6, respectively.

     Section 1.8   Amendment to Exhibit 5.01(d). Exhibit 5.01(d) to the 
Agreement is hereby amended and restated in its entirety to read as set forth in
Exhibit C attached hereto.

                                   ARTICLE II
                         REPRESENTATIONS AND WARRANTIES

     Section 2.1   Representations and Warranties. Borrower hereby represents 
and warrants to BofA that:

          (a) Representations and Warranties. The representations and warranties
     of Borrower contained in the Agreement are true and correct on and as of
     the date of this Amendment as though made on and as of such date, and

          (b) No Termination Event. Both before and after giving effect to this
     Amendment, no event shall exist that constitutes a Termination Event or an
     Unmatured Termination Event.



<PAGE>   3


                                   ARTICLE III
                                  MISCELLANEOUS

     Section 3.1   Agreement Document Pursuant to Agreement. This Amendment is 
an Agreement Document executed pursuant to the Agreement and shall be construed,
administered and applied in accordance with all of the terms and provisions of
the Agreement.

     Section 3.2   Successors, Transferees and Assigns. This Amendment shall be
binding upon and inure to the benefit of the parties hereto and their respective
successors, transferees and assigns.

     Section 3.3   Execution in Counterparts. This Amendment may be executed by
the parties hereto in several counterparts, each of which shall be deemed to be
an original and all of which shall be taken together as one agreement.

     Section 3.4   Governing Law. THIS AMENDMENT SHALL BE A CONTRACT MADE UNDER,
GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE INTERNAL LAWS OF THE STATE OF
CALIFORNIA WITHOUT REGARD TO ITS PRINCIPLES OF CONFLICTS OF LAWS.

     Section 3.5   Reaffirmation of Agreement. As amended and supplemented by 
this Amendment, the Agreement remains in full force and effect and is hereby
reaffirmed, ratified and confirmed in all respects. From and after the date
hereof, all references to the Agreement in any agreement, instrument or document
shall be references to the Agreement as amended and supplemented hereby.

     Section 3.6   Headings. The various captions in this Amendment are provided
solely for convenience of reference and shall not affect the meaning or
interpretation of any provision of this Amendment.

     Section 3.7   Complete Agreement. The Agreement (including this Amendment 
and the Exhibits and Schedules to the Agreement and this Amendment) and the
other Agreement Documents contain the entire understanding of the parties with
respect to the transactions contemplated hereby and thereby and supersedes all
prior arrangements or understandings with respect thereto.

     Section 3.8   Severability. Whenever possible, each provision of this
Amendment will be interpreted in such a manner as to be effective and valid
under applicable law, but if any provision of this Amendment is held to be
prohibited by or invalid under applicable law, such provision will be
ineffective only to the extent of such prohibition or invalidity, without
invalidating the remainder of this Amendment, except to the extent that such
prohibition or invalidity would constitute a material change in the terms of
this Amendment taken as a whole.

<PAGE>   4



     IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed by their respective officers thereunto duly authorized as of the day
and year first above written.


                                            STORAGE TECHNOLOGY CORPORATION


                                            By:    /s/ Kenneth M. Baird
                                               -------------------------------
                                             Name:     Kenneth M. Baird
                                                  ----------------------------
                                             Title:    Assistant Treasurer
                                                   ---------------------------



                                            BANK OF AMERICA NATIONAL TRUST AND
                                            SAVINGS ASSOCIATION


                                            By:    /s/ Kevin McMahon
                                               -------------------------------
                                             Name:     Kevin McMahon
                                                  ----------------------------
                                             Title:    Managing Director
                                                   ---------------------------

<PAGE>   5





                                   SCHEDULE II


     to the Second Amended and Restated Contingent Multicurrency Note Purchase
Commitment Agreement







<PAGE>   6




                                   EXHIBIT B-1


               TO SECOND AMENDMENT TO SECOND AMENDED AND RESTATED
           CONTINGENT MULTICURRENCY NOTE PURCHASE COMMITMENT AGREEMENT



<PAGE>   7



                                   EXHIBIT B-2


               TO SECOND AMENDMENT TO SECOND AMENDED AND RESTATED
           CONTINGENT MULTICURRENCY NOTE PURCHASE COMMITMENT AGREEMENT



<PAGE>   8



                                   EXHIBIT B-3


               TO SECOND AMENDMENT TO SECOND AMENDED AND RESTATED
           CONTINGENT MULTICURRENCY NOTE PURCHASE COMMITMENT AGREEMENT



<PAGE>   9



                                   EXHIBIT B-4


               TO SECOND AMENDMENT TO SECOND AMENDED AND RESTATED
           CONTINGENT MULTICURRENCY NOTE PURCHASE COMMITMENT AGREEMENT



<PAGE>   10



                                   EXHIBIT B-5


               TO SECOND AMENDMENT TO SECOND AMENDED AND RESTATED
           CONTINGENT MULTICURRENCY NOTE PURCHASE COMMITMENT AGREEMENT




<PAGE>   11



                                   EXHIBIT B-6


               TO SECOND AMENDMENT TO SECOND AMENDED AND RESTATED
           CONTINGENT MULTICURRENCY NOTE PURCHASE COMMITMENT AGREEMENT


<PAGE>   1
                                                                   EXHIBIT 10.20

STORAGETEK                                                                     
================================================================================
TO:    Bruce Taafe                               FROM:  David Weiss
                                                        Chairman, President and
                                                        Chief Executive Officer

SUBJ:  RELOCATION FROM AUSTRALIA                 DATE:  January 23, 1998
       TO STORAGETEK HEADQUARTERS

                                                 CC:    Laurie Dodd
                                                        Karen Niparko
                                                        Nancy Carst

================================================================================


Storage Technology Corporation (Company) is pleased to offer you the following
assignment at StorageTek Headquarters, Louisville, Colorado. Your job title will
be Vice President, International Field Operations, reporting to David Weiss. The
expected duration of your assignment will be twenty-six (26) months and begin in
Colorado effective November 1, 1997. You will be eligible for compensation
adjustments per corporate policy. All costs of this assignment will be charged
to 22/2647.

The following are the additional terms related to your new position. They are
available to you (subject to change as provided elsewhere in this document),
unless this assignment is terminated whether voluntarily, for cause, or
reassignment.

I.   BASE PAY - Shall be US$178,500 per annum, payable on a bi-weekly basis
through StorageTek US Payroll, effective January 1, 1998.

II.  BONUS PAY - During 1998 and 1999, you will be eligible for a target bonus 
of 30% of total target compensation capped at 2.33 times target bonus
("stretch"), based upon performance objectives that we will jointly establish.

III. STOCK OPTIONS - Following the beginning of your employment at StorageTek
headquarters, and subject to the approval of the board of directors, you will be
granted an option to purchase 13,500 shares of StorageTek common stock, price to
be determined on the day the option is granted, and subject to the following
terms and conditions: 50% (6,750) of these shares will vest over time; 4,500 on
the first anniversary of the grant; 1,500 on the second anniversary and 750 on
the third anniversary. The other 50% of the grant will vest at six (6) years
from the grant date, subject to the opportunity to vest in the same pattern as
the first 50% if performance goals are achieved.



<PAGE>   2

================================================================================
IV.   LONG TERM INCENTIVE (LTI) - You will be given stock in the Long-Term
Incentive plan, per the plan design. The plan design would allocate, for this
position enough shares to equate to 50% of your base salary (per the Black
Scholes valuation model). By comparison, your recent grants have targeted
20%-25% of your base pay.

V.    LIVING QUARTERS ACCOMMODATIONS - The company will assist you in finding
reasonable and customary accommodations, and will reimburse through Business
Expense for rent and utilities (gas, electric, water, local phone) which are
estimated to be about US$4,500 per month for the duration of your assignment.
Any incremental tax costs, fees or losses incurred in buying, selling or
maintaining a host location property are at your expense. Receipts or bills must
be provided.

VI.   VISAS AND ASSOCIATED DOCUMENTATION - Appropriate passports and visa(s) 
will be obtained for you and your family, and the cost paid for by StorageTek.
International Human Resources will assist you in these endeavors.

VII.  CAR PLAN - You will be eligible under the corporate leasing plan to lease
one (1) car, reimbursed up to US$550 per month, for the duration of your
assignment. The Australian company car plan will be suspended during the term of
your assignment.

VIII. GOLF MEMBERSHIP - Membership in the Castle Pines Golf Club will be
provided during the twenty-six (26) month assignment. This membership is for
business purposes and your personal use only. Your family usage will be at your
own expense.

IX.   RELOCATION - You are eligible for the following relocation coverage under
the terms of corporate policy:

o    Shipment of Household Goods & Personal Property from Sydney, Australia to
     the Denver area

o    Storage of Household Goods & Personal Property in Australia

o    Home Finding Trip to new location in the Denver area (you and your spouse)

o    Travel for you and your family to the new location

o    Temporary Living (60 days)

o    Settlement Allowance of US$20,400 to be paid at the start of the assignment

o    Reimburse transportation charges for two (2) pets to a maximum of
     US$2,000.00


As with Clause 5, payment will be made in accordance with Business Expense
policy and upon production of appropriate bills or receipts.


X.    HOME LEAVE - You and your wife will be reimbursed for one (1) round trip
each year to Australia (business class). Travel costs between Australia and the
U.S. for dependent children will be reimbursed for two (2) round trips per child
each year (economy class) for the duration of your assignment.






<PAGE>   3

================================================================================
XI.   EDUCATION EXPENSES - Education expenses for a minor child residing in the
U.S. will be reimbursed up to US$6,000 per year for the 1997/98 and 1998/99
school years, as required. If needed, you will be reimbursed the differential
between your son Christopher's college tuition in Australia and the comparable
program at the University of Colorado-Boulder during the 1998 and 1999. We note
that it is not intended that he attend college in 1998.

XII.  EMERGENCY TRAVEL - You and your family will be reimbursed for the cost of
one round trip (business class) to your home country in connection with the
death or serious illness of an immediate family member.

XIII. HOLIDAYS AND WORK SCHEDULES - These will be observed in accordance with
U.S. corporate policy.

XIV.  VACATION AND BENEFITS PROGRAMS

o    Vacation hours accrued in Australia before the assignment will be paid to
     you before you leave Australia.

o    You will be eligible for annual vacation based upon the US plan for
     corporate officers.

o    You will be eligible to participate in standard Storage Technology
     Corporation US benefits. These include the medical/dental plans and the
     vision plan covering your children provided they are students.

XV.   OTHER OPTIONAL PLANS:

o    Employee Stock Purchase Plan

o    Long Term Disability

o    Supplemental Life Insurance

o    Profit Sharing and Thrift (401K)

o    Deferred Compensation


XVI.  PERSONAL INCOME TAX AND OTHER PAYROLL TAXES - You are responsible for
ensuring that all home and host country tax returns are filed on a timely basis.
Also, you will be responsible for payment of all U.S., state income, and social
security taxes during your assignment. The company will reimburse (via gross-up)
the income taxes payable on all nondeductible expatriate benefits and relocation
costs included in this agreement at Clauses 5, 7, 8, 9, 10, 11, 12 and 19.


<PAGE>   4


================================================================================
The Company requires the hiring of a specialized international tax advisor to
prepare your tax returns and will cover the costs of this service for three (3)
years (1998, 1999 and 2000 tax years). This tax assistance tax preparation will
include:

o    pre-planning meeting with a tax advisor (Price Waterhouse/Australia),

o    completing your tax advisor's filing questionnaires promptly after year
     end, and filing both US and foreign returns promptly after preparation, and

o    while on assignment, if you decide to make any financial arrangements or
     transactions that will significantly impact your worldwide income, you must
     notify the Company in advance. Failure to disclose such significant
     financial transactions will allow the Company at its option not to
     reimburse any excess marginal tax caused by the assignment to the employee.

XVII. NO MINIMUM TERM OF EMPLOYMENT - Nothing contained herein shall be
construed to obligate Storage Technology Corporation or any other affiliate of
Storage Technology Corporation to provide you with any minimum term of
employment.

XVIII. TERMINATION - The following sets forth the terms and conditions of your
severance arrangement between you and Storage Technology Corporation during the
twenty-six (26) month assignment. In all cases of termination, repatriation
noted in Clause 19 will be paid by the corporation, except in the case of
"TERMINATION FOR CAUSE," the re-settlement allowance will not be paid.

1.   TERMINATION WITHOUT CAUSE - If the Company elects to terminate your
     employment without "Cause" (as that term is defined in paragraph 3), you
     shall be entitled to receive, as a severance payment, an amount equal to
     one-twelfth of your current annual base compensation. This base pay
     component shall be paid to you in a cash lump sum within thirty days after
     the termination of your employment, and the bonus payment will be paid at
     the time of payment to eligible participants.

2.   TERMINATION IN THE EVENT OF SALE, MERGER OR CHANGE OF CONTROL - If, during
     your employment, the Company is sold, or merged with or into another
     company (in a transaction in which the Company is not the surviving
     entity), or all or substantially all of the assets of the Company are sold,
     or more than 25% of the outstanding voting capital stock of the Company is
     acquired by another person or persons (as such term is used in Sections 13
     and 14(d)(2) of the Securities Exchange Act of 1934) acting as a group, you
     shall have the right to terminate your employment by written notice to the
     Company, given within six months after the date of any such event.



<PAGE>   5


================================================================================
3.   TERMINATION FOR CAUSE - If the Company elects to terminate your employment
     for Cause (as that term is defined below), your employment will terminate
     on the date fixed for termination by the Company, and thereafter the
     Company will not be obligated to pay you any additional compensation,
     whether in the way of base compensation, bonus, severance or otherwise,
     other than the compensation due and owing through the date of termination.
     "Cause" for purposes of this letter, shall mean any of the following: (i)
     gross negligence or dishonesty in the performance of your duties as an
     employee of the Company; (ii) engaging in conduct or activities or holding
     any position that materially conflicts with the interest of, or materially
     interferes with your duties owed to, the Company; (iii) engaging in conduct
     which is materially detrimental to the business of the Company; or (iv) any
     intentional violation of Company policies applicable to employees of your
     position with the Company, and any other violations of Corporate Policies
     and Practices.

XIX.  SEVERANCE - You agree to execute documents that will be required to give
effect to this agreement. You will be required to execute a second agreement, a
standard release and non-compete, as precondition to receipt of severance and
other benefits recited herein.

XX.   REPATRIATION - It is anticipated that your assignment in the U.S. will be
completed within twenty-six (26) months, at which time you will return to
Australia. You will be eligible for the following expenses upon repatriation, or
upon termination:

o    Airfare for you and your wife (business class) and children (economy class)
     to Australia

o    Temporary living for sixty (60) days or less (reimbursed through Business
     Expense)

o    Shipment of household goods to Australia. Return shipment is not to exceed 
     125% of original shipment weight.

o    Resettlement Allowance of US$20,400

XXI.  CONFLICT OF INTEREST - It is understood  that while on assignment you will
not engage in any employment, business enterprise, or other activity that would
in any way conflict with your services and the interests of Storage Technology
Corporation or any of its affiliates.

XXII. CONTRACT IMPLEMENTATION AND CHANGE - It is further understood that the
terms and conditions of your assignment are subject to change under the rules
governing employment practices in Colorado and by mutual agreement of employee
and management. The relocation agreement will be implemented referencing Company


<PAGE>   6
policy when items are not specifically addressed. At the end of your assignment,
should your assignment be extended, a new package will be negotiated.

XXIII. UNENFORCEABLE PROVISIONS - In the event that any provision of this
agreement or the specifically referenced policies and practices shall be held
invalid or unenforceable by reason of law, such invalidity or unenforceability
shall attach only to such provision and shall not affect or render invalid or
unenforceable any other provisions.

XXIV. The contents of this agreement should not be divulged either during the
term of your employment or at any time thereafter by you to others who do not
have a valid need to know.

This agreement supersedes and replaces all previous communications relating to
your assignment, and there are no other understandings or representations,
written or oral, about the assignment.

Bruce, I look forward to your contributions. If you have any questions, please
contact me or Karen Niparko.

Very truly yours,


/s/ DAVID WEISS            2/3/98        /s/ LAURIE DODD
- ---------------------------------        -----------------------------
David Weiss                Date          Laurie Dodd                          
Chairman, President and                  Corporate Vice President
Chief Executive Officer                  Human Resource Development



I have read and accept the above terms and conditions:


/s/ BRUCE TAAFE            1/1/98
- ---------------------------------
Bruce Taafe                Date





<PAGE>   7
STORAGETEK                                                                   

TO:     Bruce Taafe                          FROM:    David Weiss
                                                      Chairman, President and
                                                      Chief Executive Officer

SUBJ:   RELOCATION FROM AUSTRALIA            DATE:    January 23, 1998
        TO STORAGETEK ASIA-PACIFIC

                                             CC:      Laurie Dodd
                                                      Karen Niparko
                                                      Nancy Carst


Storage Technology Corporation (Company) is pleased to offer you the following
assignment at StorageTek Asia-Pacific. Your job title will be President of
Asia-Pacific Operations, reporting to David Weiss. The expected duration of
your assignment will be twenty-six (26) months and begin in Colorado effective
November 1, 1997. You will be eligible for compensation adjustments per
corporate policy. The following are the additional terms related to your new
position. They are available to you (subject to change as provided elsewhere in
this document), unless this assignment is terminated whether voluntarily, for
cause, or reassignment.


I. BASE PAY - Shall be US$76,500 per annum, payable on a bi-weekly basis
through StorageTek Asia-Pacific payroll, effective January 1, 1998.

II. BONUS PAY - During 1998 and 1999, you will be eligible for a target bonus
of 30% of total target compensation capped at 2.33 times target bonus
("stretch"), based upon performance objectives that we will jointly establish.

III. PERSONAL INCOME TAX AND OTHER PAYROLL TAXES - You are responsible for
ensuring that all home and host country tax returns are filed on a timely
basis.

IV. NO MINIMUM TERM OF EMPLOYMENT - Nothing contained herein shall be construed
to obligate Storage Technology Corporation or any other affiliate of Storage
Technology Corporation to provide you with any minimum term of employment.

V.  COMPLETION OF AGREEMENT - After completion of the twenty-six (26)
month agreement, you may resign and receive twelve (12) months of base pay
(being the combined base compensation on the US and Asia-Pacific contracts), and
100% of on-plan incentive (being the combined on-plan incentive on US and
Asia-Pacific contracts), in addition to a cash payment of US $56,100.

<PAGE>   8

VI. TERMINATION - The following sets forth the terms and conditions of your
severance arrangement between you and Storage Technology Corporation during the
twenty-six (26) month assignment:

1)   TERMINATION WITHOUT CAUSE - If the Company elects to terminate your
     employment without "Cause" (as that term is defined in paragraph 3), you
     shall be entitled to receive, as a severance payment, an amount equal to
     your then current annual base compensation (being the combined base
     compensation on the US and Asia-Pacific contracts), plus your annual
     on-plan bonus (being the combined on-plan bonus incentive on the US and
     Asia-Pacific contracts). The base pay component shall be paid to you in a
     cash lump sum within thirty days after the termination of your employment,
     and the bonus portion of the payment will be paid at the same time of
     payment as to other eligible participants. The severance payment shall be
     reduced by any severance payments paid to you under the US contract. A
     prorated payment, based on the months of the agreement, will be paid
     against the $56,100, as described under 'V. Completion of the Agreement.'

2)   TERMINATION IN THE EVENT OF SALE, MERGER OR CHANGE OF CONTROL - If, during
     your employment, the Company is sold, or merged with or into another
     company (in a transaction in which the Company is not the surviving
     entity), or all or substantially all of the assets of the Company are
     sold, or more than 25% of the outstanding voting capital stock of the
     Company is acquired by another person or persons (as such term is used in
     Sections 13 and 14(d)(2) of the Securities Exchange Act of 1934) acting as
     a group, you shall have the right to terminate your employment by written
     notice to the Company, given within six months after the date of any such
     event, and following such termination the Company will pay you an amount
     equal to your then current rate of annual base compensation, plus your
     annual on plan bonus (being the combined on-plan bonus incentive on the US
     and Asia-Pacific contracts). The amount payable pursuant to this paragraph
     2 shall be paid in a cash lump sum within 30 days after your termination.
     A prorated payment, based on the months of the agreement, will be paid
     against the $56,100, as described under 'V. Completion of the Agreement.'

3)   TERMINATION FOR CAUSE - If the Company elects to terminate your employment
     for Cause (as that term is defined below), your employment will terminate
     on the date fixed for termination by the Company, and thereafter the
     Company will not be obligated to pay you any additional compensation,
     whether in the way of base compensation, bonus, severance or otherwise,
     other than the compensation due and owing through the date of termination.
     "Cause" for purposes of this letter, shall mean any of the following: (i)
     gross negligence or dishonesty in the performance of your duties as an
     employee of the Company; (ii) engaging in conduct or activities or holding
     any position that materially conflicts with the interest of, or materially
     interferes with your duties owed to, the Company; (iii) engaging in
     conduct which is materially detrimental to the business of the Company; or
     (iv) any intentional violation of Company policies applicable to employees
     of your position with the Company, and any other violations of Corporate
     Policies and Practices.


<PAGE>   9



VII. SEVERANCE - You agree to execute documents that will be required to give
effect to this agreement. You will be required to execute a second agreement, a
standard release and non-compete, as precondition to receipt of severance and
other benefits recited herein.

VIII. CONFLICT OF INTEREST - It is understood that while on assignment you will
not engage in any employment, business enterprise, or other activity that would
in any way conflict with your services and the interests of Storage Technology
Corporation or any of its affiliates.

IX. CONTRACT IMPLEMENTATION AND CHANGE - It is further understood that the
terms and conditions of your assignment are subject to change under the rules
governing employment practices in Colorado and by mutual agreement of employee
and management. The relocation agreement will be implemented referencing
Company policy when items are not specifically addressed. At the end of your
assignment, should your assignment be extended, a new package will be
negotiated.

X. UNENFORCEABLE PROVISIONS - In the event that any provision of this agreement
or the specifically referenced policies and practices shall be held invalid or
unenforceable by reason of law, such invalidity or unenforceability shall
attach only to such provision and shall not affect or render invalid or
unenforceable any other provisions.

The contents of this agreement should not be divulged either during the term of
your employment or at any time thereafter by you to others who do not have a
valid need to know.

This agreement supersedes and replaces all previous communications relating to
your assignment, and there are no other understandings or representations,
written or oral, about the assignment.


- -----------------------------------     ---------------------------------------
David Weiss                    Date     Laurie Dodd                        Date
Chairman, President and                 Corporate Vice President
Chief Executive Officer                 Human Resource Development

I have read and accept the above terms and conditions:


- -----------------------------------
Bruce Taafe                    Date


<PAGE>   1
                                                                    Exhibit 21.0



                         STORAGE TECHNOLOGY CORPORATION

<TABLE>
<CAPTION>


U.S. SUBSIDIARIES                                                               INCORPORATION
- -----------------                                                               -------------
<S>                                                                             <C>
Storage Technology European Trade Corporation                                       Delaware
Storage Technology Optical Disk Development Corporation                             Delaware
StorageTek Foundation                                                               Colorado
StorageTek Holding Corporation                                                      Nevada
StorageTek International Corporation                                                Delaware
StorageTek International Services Corporation                                       Delaware
Vitalink Communications Corporation                                                 Delaware

NON-U.S. SUBSIDIARIES
- ---------------------
Network Systems Australasia Pty. Limited                                            Australia
StorageTek New Zealand Pty., Limited                                                Australia
Storage Technology of Australia Pty., Limited                                       Australia
Storage Technology Network Systems GES.mbH                                          Austria
Network Systems Foreign Sales Corp.                                                 Barbados
Storage Technology (Belgium) N.V./S.A.                                              Belgium
Storage Technology (Bermuda) Ltd.                                                   Bermuda
StorageTek Brasil Ltda                                                              Brazil
StorageTek Canada, Inc.                                                             Canada
StorageTek A/S                                                                      Denmark
StorageTek OY                                                                       Finland
Network Systems France, S.A.                                                        France
Storage Technology European Operations, S.A.                                        France
Storage Technology France, S.A.                                                     France
Storage Technology Holding France, S.A.                                             France
Storage Technology Formation, SARL                                                  France
Bytex GmbH                                                                          Germany
Storage Technology GmbH                                                             Germany
Storage Technology Holding GmbH                                                     Germany
StorageTek North Asia Ltd.                                                          Hong Kong
Network Systems Italia S.r.l.                                                       Italy
Storage Technology Italia, S.p.A.                                                   Italy
Network Systems Japan K.K.                                                          Japan
Storage Technology Asia/Pacific K.K.                                                Japan
Storage Technology of Japan, Ltd.                                                   Japan
StorageTek (Malaysia) Sdn. Bhd.                                                     Malaysia
StorageTek de Mexico, S.A. de C.V.                                                  Mexico
Storage Technology (The Netherlands) B.V.                                           Netherlands
StorageTek European Holding B.V.                                                    Netherlands
StorageTek Global Operations B.V.                                                   Netherlands
StorageTek A/S                                                                      Norway
StorageTek South Asia Pte. Ltd.                                                     Singapore
StorageTek Espana, S.A.                                                             Spain
NSC Network Systems AB (Sweden)                                                     Sweden
Storage Technology Sweden AB                                                        Sweden
StorageTek AG                                                                       Switzerland
Bytex DataCom Ltd.                                                                  United Kingdom
Storage Technology Holding Limited                                                  United Kingdom
Storage Technology Limited                                                          United Kingdom
Storage Technology Manufacturing Limited                                            United Kingdom
</TABLE>




<PAGE>   1
                                                                    EXHIBIT 23.1



                       CONSENT OF INDEPENDENT ACCOUNTANTS



We hereby consent to the incorporation by reference in the Registration
Statements on Form S-8 (Nos. 33-19426, 33-32235, 33-32243, 33-37464, 33-42817,
33-51756, 2-60117, 2-80183, 2-61333, 2-89417, 33-50777, 33-59165, and 33-52197,
333-08116, 333-08497, 333-08118, 333-08495, 333-53973, 333-53995) of Storage
Technology Corporation of our report dated February 19, 1999 appearing on Page
F-21 of this Form 10-K.




PRICEWATERHOUSECOOPERS LLP

Denver, Colorado
March 5, 1999

<TABLE> <S> <C>

<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE
COMPANY'S FORM 10-K DATED DECEMBER 25, 1998 AND IS QUALIFIED IN ITS ENTIRETY BY
REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK> 0000094673
<NAME> STORAGE TECHNOLOGY CORPORATION
<MULTIPLIER> 1,000
       
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