QUANTUM CORP /DE/
10-Q, 1999-11-02
COMPUTER STORAGE DEVICES
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                                    Form 10-Q

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                              --------------------

             [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF
                                       THE
                         SECURITIES EXCHANGE ACT OF 1934

                For the quarterly period ended September 26, 1999

                                       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 0-12390

                               QUANTUM CORPORATION

           Incorporated Pursuant to the Laws of the State of Delaware

                              --------------------

                  IRS Employer Identification Number 94-2665054

                 500 McCarthy Blvd., Milpitas, California 95035

                                 (408) 894-4000

                              --------------------

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.
       Yes   X    No
           -----     -----

As of the close of  business  on  October  24,  1999,  Quantum  Corporation  had
164,766,625  shares of DLT & Storage Systems group common stock  outstanding and
83,574,022 shares of Hard Disk Drive group common stock outstanding.


<PAGE>

<TABLE>
                                               QUANTUM CORPORATION

                                                      INDEX
<CAPTION>
                                                                                                        Page
                                                                                                       Number
                                                                                                       ------
<S>                                                                                                       <C>
PART I - FINANCIAL INFORMATION

Quantum Corporation - Condensed Consolidated Financial Statements

              Condensed Consolidated Statements of Operations                                              3

              Condensed Consolidated Balance Sheets                                                        4

              Condensed Consolidated Statements of Cash Flows                                              5

              Notes to Condensed Consolidated Financial Statements                                         6

              Management's Discussion and Analysis of Financial Condition
                 and Results of Operations                                                                13

Quantum Corporation DLT & Storage Systems Group - Condensed Combined
   Financial Statements

              Condensed Combined Statements of Operations                                                 22

              Condensed Combined Balance Sheets                                                           23

              Condensed Combined Statements of Cash Flows                                                 24

              Notes to Condensed Combined Financial Statements                                            25

              Management's Discussion and Analysis of Financial Condition
                 and Results of Operations                                                                29

Quantum Corporation Hard Disk Drive Group - Condensed Combined
   Financial Statements

              Condensed Combined Statements of Operations                                                 38

              Condensed Combined Balance Sheets                                                           39

              Condensed Combined Statements of Cash Flows                                                 40

              Notes to Condensed Combined Financial Statements                                            41

              Management's Discussion and Analysis of Financial Condition
                 and Results of Operations                                                                46

PART II - OTHER INFORMATION                                                                               57

SIGNATURE                                                                                                 59

</TABLE>
                                                                               2

<PAGE>



PART I - FINANCIAL INFORMATION

Item 1.  Financial Statements

                                                 QUANTUM CORPORATION
<TABLE>
                                     CONDENSED CONSOLIDATED STATEMENTS OF INCOME
                                        (In thousands, except per share data)
                                                     (unaudited)

<CAPTION>
                                                  Three Months Ended                       Six Months Ended
                                         September 26,        September 27,       September 26,        September 27,
                                                 1999                 1998                 1999                 1998
                                          -----------          -----------          -----------          -----------
<S>                                       <C>                  <C>                  <C>                  <C>
Revenue                                   $ 1,125,124          $ 1,164,711          $ 2,208,359          $ 2,267,734
Cost of revenue - on net sales                932,719              972,822            1,836,035            1,909,473
Cost of revenue - special charge               57,068                 --                 57,068                 --
                                          -----------          -----------          -----------          -----------

   Gross profit                               135,337              191,889              315,256              358,261

Operating expenses:
   Research and development                    92,453               82,640              182,886              166,938
   Sales and marketing                         55,459               45,386              108,680               83,723
   General and administrative                  30,570               21,494               59,714               38,895
   Purchased in-process research
      and development                          37,000                 --                 37,000                 --
   Special charge                               2,338                 --                  2,338                 --
                                          -----------          -----------          -----------          -----------
                                              217,820              149,520              390,618              289,556

   Income (loss) from operations              (82,483)              42,369              (75,362)              68,705

Other income (expense):
   Interest income and other, net               7,110                6,133               19,557               14,836
   Interest expense                            (7,218)              (6,725)             (14,426)             (13,227)
   Loss from investee                            --                (17,114)                --                (41,350)
                                          -----------          -----------          -----------          -----------
                                                 (108)             (17,706)               5,131              (39,741)

Income (loss) before income taxes             (82,591)              24,663              (70,231)              28,964
Income tax provision (benefit)                (19,938)               7,399              (15,859)               8,689
                                          -----------          -----------          -----------          -----------

Net income (loss)                         $   (62,653)         $    17,264          $   (54,372)         $    20,275
                                          ===========          ===========          ===========          ===========

DLT & Storage Systems group:

Net income                                $    21,060          $    52,143          $    72,525          $    95,708
                                          ===========          ===========          ===========          ===========

Net income per share:
   Basic                                  $      0.13          $      0.34          $      0.44          $      0.62
   Diluted                                $      0.12          $      0.33          $      0.42          $      0.59

Weighted average common shares:
   Basic                                      165,378              151,527              166,019              155,122
   Diluted                                    173,080              162,695              173,029              161,223

Hard Disk Drive group:

Net loss                                  $   (83,687)         $   (34,878)         $  (126,871)         $   (75,432)
                                          ===========          ===========          ===========          ===========

Net loss per share:
   Basic                                  $     (1.01)         $     (0.46)         $     (1.53)         $     (0.97)
   Diluted                                $     (1.01)         $     (0.46)         $     (1.53)         $     (0.97)

Weighted average common shares:
   Basic                                       82,883               75,763               83,107               77,561
   Diluted                                     82,883               75,763               83,107               77,561
<FN>

See accompanying notes to condensed consolidated financial statements.
</FN>
</TABLE>
                                                                               3

<PAGE>


                                               QUANTUM CORPORATION
<TABLE>
                                      CONDENSED CONSOLIDATED BALANCE SHEETS
                                                 (In thousands)

<CAPTION>
                                                                           September 26,              March 31,
                                                                                    1999                   1999
                                                                           -------------             ----------
                                                                             (unaudited)
<S>                                                                          <C>                     <C>
Assets
- ------
Current assets:
   Cash and cash equivalents                                                 $   689,010             $  772,368
   Marketable securities                                                          34,634                 24,426
   Accounts receivable, net of allowance for
      doubtful accounts of $10,421 and $12,130                                   592,258                646,557
   Inventories                                                                   273,647                271,986
   Deferred taxes                                                                107,701                107,701
   Other current assets                                                          149,951                104,835
                                                                            ------------             ----------

Total current assets                                                           1,847,201              1,927,873

Property and equipment, net of accumulated
   depreciation of $267,542 and $291,617                                         271,630                271,928
Intangible assets, net                                                           292,348                225,567
Other assets                                                                      46,620                 58,228
                                                                             -----------             ----------

                                                                             $ 2,457,799             $2,483,596
                                                                             ===========             ==========

Liabilities and Stockholders' Equity
- ------------------------------------
Current liabilities:
   Accounts payable                                                          $   377,364             $  406,369
   Accrued warranty                                                               93,158                 76,905
   Accrued compensation                                                           68,900                 73,605
   Income taxes payable                                                           26,004                 33,411
   Current portion of long-term debt                                               1,072                  1,024
   Other accrued liabilities                                                     151,834                 90,691
                                                                             -----------             ----------

Total current liabilities                                                        718,332                682,005

Deferred taxes                                                                    78,345                 67,340
Long-term debt                                                                    48,412                 56,961
Convertible subordinated debt                                                    287,500                287,500

Stockholders' equity:
   Common stocks                                                                 936,867                886,434
   Retained earnings                                                             449,833                504,206
   Accumulated other comprehensive loss                                              (77)                  (850)
   Treasury stock, at cost                                                       (61,413)                     -
                                                                             -----------             ----------

Total stockholders' equity                                                     1,325,210              1,389,790
                                                                             -----------             ----------

                                                                             $ 2,457,799             $2,483,596
                                                                             ===========             ==========
<FN>
See accompanying notes to condensed consolidated financial statements.
</FN>
</TABLE>
                                                                               4

<PAGE>


                                        QUANTUM CORPORATION
<TABLE>
                          CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                          (In thousands)
                                            (unaudited)
<CAPTION>
                                                                       Six Months Ended
                                                                 September 26,      September 27,
                                                                         1999               1998
                                                                    ---------          ---------
<S>                                                                 <C>                <C>
  Cash flows from operating activities:
     Net income (loss)                                              $ (54,372)         $  20,275
     Adjustments to reconcile net income (loss) to net cash
      provided by operations:
        Special charge                                                 58,385               --
        Purchased in-process research and development                  37,000               --
        Depreciation                                                   48,496             45,341
        Amortization                                                   13,872              7,312
        Loss from investee                                               --               41,350
        Deferred income taxes                                             405              1,003
        Compensation related to stock plans                             1,640              3,443
     Changes in assets and liabilities:
        Accounts receivable                                            54,663             74,914
        Inventories                                                      (520)            19,236
        Accounts payable                                              (31,120)           (48,895)
        Income taxes payable                                           (7,407)           (11,693)
        Accrued warranty                                               15,668             (1,721)
        Other assets and liabilities                                  (36,972)            16,497
                                                                    ---------          ---------
  Net cash provided by operating activities                            99,738            167,062
                                                                    ---------          ---------

  Cash flows from investing activities:
     Purchases of marketable securities                               (33,406)           (48,798)
     Maturities of marketable securities                               33,314             91,131
     Acquisition of intangible assets                                  (2,500)              --
     Investment in property and equipment                             (49,909)           (57,442)
                                                                    ---------          ---------
  Net cash used in investing activities                               (52,501)           (15,109)
                                                                    ---------          ---------

  Cash flows from financing activities:
     Proceeds from long-term credit facilities                         10,000               --
     Principal payments on long-term credit facilities                (18,501)              (457)
     Purchases of treasury stock                                     (145,652)          (264,220)
     Proceeds from issuance of common stock, net                       23,558             20,020
                                                                    ---------          ---------
  Net cash used in financing activities                              (130,595)          (244,657)
                                                                    ---------          ---------

  Decrease in cash and cash equivalents                               (83,358)           (92,704)
  Cash and cash equivalents at beginning of period                    772,368            642,150
                                                                    ---------          ---------
  Cash and cash equivalents at end of period                        $ 689,010          $ 549,446
                                                                    =========          =========

  Supplemental disclosure of cash flow information:
     Cash paid during the period for:
        Interest                                                    $  12,981          $  12,472
        Income taxes, net of (refunds)                              $  18,341          $  (7,816)
     Tangible and intangible assets acquired for shares of
      DSSG and HDDG common stock, net of cash acquired and
      liabilities assumed                                           $ 104,698          $    --

<FN>
See accompanying notes to condensed consolidated financial statements.
</FN>
</TABLE>
                                                                               5

<PAGE>


                               QUANTUM CORPORATION

              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                   (unaudited)

1. Basis of presentation

The accompanying  unaudited condensed  consolidated financial statements include
the  accounts  of  Quantum  Corporation  ("Quantum"  or the  "Company")  and its
majority owned subsidiaries. All material intercompany balances and transactions
have been eliminated.  The interim financial statements reflect all adjustments,
consisting  only of  normal  recurring  adjustments  which,  in the  opinion  of
management, are necessary for a fair presentation of the results for the periods
shown. The results of operations for such periods are not necessarily indicative
of the results  expected for the full fiscal year.  Certain prior period amounts
have been  reclassified  to conform to the current  period's  presentation.  The
condensed  consolidated balance sheet as of March 31, 1999 has been derived from
the audited  financial  statements  at that date but does not include all of the
information and footnotes required by generally accepted  accounting  principles
for complete financial statements.  The accompanying financial statements should
be  read in  conjunction  with  the  audited  financial  statements  of  Quantum
Corporation  for the fiscal  year ended  March 31,  1999  included in its Annual
Report  on Form  10-K and  Registration  Statement  on Form  S-4  (SEC  File No.
333-75153) filed with the Securities and Exchange Commission.


2. Recapitalization

On July 23, 1999, the Company's stockholders approved a tracking stock proposal.
As a  result,  Quantum's  Certificate  of  Incorporation  has been  amended  and
restated (the  "Restated  Certificate  of  Incorporation"),  effective as of the
close of  business  on August 3, 1999,  designating  two new  classes of Quantum
Corporation  common stock,  DLT & Storage  Systems group ("DSSG")  common stock,
$.01 par value per share and Hard Disk Drive group ("HDDG")  common stock,  $.01
par value per share. On August 3, 1999, each authorized  share of Quantum common
stock,  $.01 par value per share,  was exchanged for one share of DSSG stock and
one-half  share of HDDG  stock.  These  two  securities  are  intended  to track
separately the  performance of the DLT & Storage Systems group and the Hard Disk
Drive group.


3. Inventories

Inventories consisted of the following:
      (In thousands)
                                         September  26,               March 31,
                                                   1999                    1999
                                         --------------               ---------

   Materials and purchased parts               $ 60,550                $ 62,342
   Work in process                               37,002                  27,531
   Finished goods                               176,095                 182,113
                                               --------                --------
                                               $273,647                $271,986
                                               ========                ========

                                                                               6

<PAGE>


4. Net income (loss) per share

As a result of the  recapitalization,  the Company has two tracking stocks, DSSG
common stock and HDDG common stock, that are intended to reflect the performance
of Quantum's two business groups.  Accordingly,  the net income (loss) per share
for each  group  presented  below has been  calculated  in  accordance  with the
Restated Certificate of Incorporation.

<TABLE>
The following  table sets forth the  computation of basic and diluted net income
per share for DSSG:


<CAPTION>
(In thousands, except per share data)                   Three Months Ended                  Six Months Ended
                                                   September 26,    September 27,    September 26,    September 27,
                                                       1999             1998             1999             1998
                                                     --------         --------         --------         --------
<S>                                                  <C>              <C>              <C>              <C>
Numerator:
   Numerator for basic net income per share
   - income available to common stockholders         $ 21,060         $ 52,143         $ 72,525         $ 95,708

   Effect of dilutive securities:
   7% convertible subordinated notes                     --              2,013             --               --
                                                     --------         --------         --------         --------

   Numerator for diluted net income per
   share - income available to common
   stockholders                                      $ 21,060         $ 54,156         $ 72,525         $ 95,708
                                                     ========         ========         ========         ========
Denominator:
   Denominator for basic net income per
   share - weighted average shares                    165,378          151,527          166,019          155,122

   Effect of dilutive securities:
   Outstanding options                                  7,702            4,962            7,010            6,101
   7% convertible subordinated notes                     --              6,206             --               --
                                                     --------         --------         --------         --------

   Denominator for diluted net income per
   share - adjusted weighted average shares           173,080          162,695          173,029          161,223
                                                     ========         ========         ========         ========

Basic net income per share                           $   0.13         $   0.34         $   0.44         $   0.62
                                                     ========         ========         ========         ========

Diluted net income per share                         $   0.12         $   0.33         $   0.42         $   0.59
                                                     ========         ========         ========         ========
</TABLE>

The  computation  of  diluted  net income per share for the three and six months
ended September 26, 1999, and the six months ended September 27, 1998,  excluded
the effect of the 7% convertible  subordinated  notes issued in July 1997, which
are convertible into 6,206,152 shares of DSSG common stock, or 21.587 shares per
$1,000 note, because the effect would have been antidilutive.

                                                                               7

<PAGE>


<TABLE>
The following table sets forth the computation of basic and diluted net loss per
share for HDDG:


<CAPTION>
(In thousands, except per share data)               Three Months Ended                   Six Months Ended
                                              September 26,     September 27,    September 26,     September 27,
                                                  1999              1998              1999             1998
                                             ----------------  ----------------  ---------------  ----------------
<S>                                               <C>              <C>               <C>              <C>
Numerator:
   Numerator for basic and diluted net loss
   per share - loss available to common
   stockholders                                   $ (83,687)       $  (34,878)       $ (126,871)      $  (75,432)
                                             ================  ================  ===============  ================

Denominator:
   Denominator for basic and diluted net
   loss per share - weighted average
   shares                                            82,883            75,763            83,107           77,561
                                             ================  ================  ===============  ================

Basic and diluted net loss per share              $   (1.01)        $   (0.46)        $   (1.53)       $   (0.97)
                                             ================  ================  ===============  ================
</TABLE>

The computation of diluted net loss per share for the three and six months ended
September  26,  1999 and  September  27,  1998  excluded  the  effect  of the 7%
convertible  subordinated  notes issued in July 1997, which are convertible into
3,103,076 shares of HDDG common stock, or 10.793 shares per $1,000 note, because
the effect would have been antidilutive.

Options to purchase  15,234,101 and 10,390,490  shares of HDDG common stock were
outstanding at September 26, 1999 and September 27, 1998, respectively. However,
the corresponding  weighted average outstanding options were not included in the
computation  of diluted  net loss per share for the three and six  months  ended
September  26, 1999 and  September  27, 1998  because the effect would have been
antidilutive.


5.   Stockholders' Equity

In September 1999, the Company issued 4.1 million DSSG shares and 2 million HDDG
shares to the  stockholders of Meridian Data, Inc.  ("Meridian") to complete the
acquisition  of Meridian as a wholly owned  subsidiary of the Company.  In part,
the Company reissued DSSG and HDDG shares held as treasury stock to complete the
acquisition. The difference between the cost of the treasury stock and the value
at which the  shares  were  reissued  resulted  in a $3.5  million  addition  to
paid-in-capital  in  the  quarter  ended  September  26,  1999.  For  additional
information regarding the Meridian acquisition,  refer to Note 7 of the Notes to
Condensed Consolidated Financial Statements.

In May 1999,  the Board of  Directors  authorized  the Company to  repurchase  a
combined total of up to $200 million of Quantum's common stocks through the open
market from time to time. In part,  the intent of the repurchase was to minimize
the  dilutive  impact  of the  shares  issued to  complete  the  acquisition  of
Meridian.   During  the  six  months  ended  September  26,  1999,  the  Company
repurchased  7.2 million  shares of DSSG common stock and 2.2 million  shares of
HDDG common stock for a combined total of $146 million.

In October 1999, the Board of Directors  authorized an increase in the Company's
stock repurchase  program,  increasing the previously  authorized amount of $200
million to a total of $600  million.  The  increase  is intended  primarily  for
repurchase of the Company's DSSG common stock.

                                                                               8
<PAGE>


6. Litigation

On August 7,  1998,  the  Company  was named as one of several  defendants  in a
patent  infringement  lawsuit filed in the U.S.  District Court for the Northern
District of Illinois,  Eastern  Division.  The plaintiff,  Papst Licensing GmbH,
owns at least 24 U.S.  patents which it asserts that the Company has  infringed.
The Company has studied many of these patents  before and, of the patents it has
studied, believes that defenses of patent invalidity and non-infringement can be
asserted.  However,  Quantum  has not  completed a full study of all the patents
asserted  by Papst  and  there  can be no  assurance  that the  Company  has not
infringed  these or other  patents  owned by Papst.  The final  results  of this
litigation,  as with any litigation,  are uncertain.  In addition,  the costs of
engaging in litigation with Papst will be substantial.

The Company is also subject to other legal  proceedings and claims that arise in
the ordinary course of its business.  While  management  currently  believes the
amount of ultimate  liability,  if any,  with respect to these  actions will not
materially affect the financial position, results of operations, or liquidity of
the Company,  the  ultimate  outcome of any  litigation  is  uncertain.  Were an
unfavorable outcome to occur, the impact could be material to the Company.


7. Business Combination

On September 10, 1999, the Company's DLT & Storage  Systems group  completed the
acquisition  of Meridian.  Meridian is a developer and  manufacturer  of network
attached  storage  solutions  utilizing  both  conventional  hard disk drive and
optical  disk  technologies  for the PC  local  area  network  environment.  The
acquisition  has  been  accounted  for as a  purchase  at a  total  cost of $115
million.  The  acquisition was completed with the issuance of 4.1 million shares
of DSSG common  stock and 2 million  shares of HDDG common  stock  valued at $74
million and $18 million,  respectively,  on the date of  acquisition in exchange
for all outstanding shares of Meridian,  the conversion of outstanding  Meridian
stock options into options to purchase  630,000  shares of DSSG common stock and
315,000  shares of HDDG  common  stock  valued  at $8  million  and $2  million,
respectively,  and the assumption of Meridian  liabilities and other acquisition
costs of approximately $13 million. At the date of acquisition, Meridian had $11
million of cash and marketable  securities and a net operating loss carryforward
for U.S.  federal income tax purposes of approximately  $46 million.  Meridian's
results of operations are included in the financial statements as of the date of
acquisition,  and the assets and  liabilities  acquired were  recorded  based on
their fair values as of the date of acquisition. Pro forma results of operations
have not been presented because the effect of the acquisition was not material.

The excess of the purchase price over the fair value of the net tangible  assets
acquired has been  allocated to the following  identifiable  intangible  assets:
goodwill,  trademarks,  workforce in place,  developed technology and in-process
research and development.  As of the acquisition date, technological feasibility
of the in-process  technology has not been established and the technology has no
alternative  future use.  Therefore,  the Company has expensed the amount of the
purchase price allocated to in-process  research and  development,  estimated at
$37 million as of the date of acquisition.  This amount and the other components
of the purchase price  allocation are  preliminary.  The remaining  identifiable
intangible assets,  valued at $77 million,  will be amortized on a straight-line
basis over periods ranging from five to ten years.

                                                                               9
<PAGE>

The  amount  of  the  purchase  price  allocated  to  in-process   research  and
development  was  determined  by  estimating  the stage of  development  of each
in-process  research  and  development  project  at  the  date  of  acquisition,
estimating  cash flows resulting from the expected  revenue  generated from such
projects, and discounting the net cash flows back to their present value using a
discount  rate of 21%,  which  represents  a premium  to the  Company's  cost of
capital.  The expected revenue assumes an average compound annual revenue growth
rate of 64% during calendar years 1999 through 2007. Expected total revenue from
the purchased  in-process  projects peak in calendar year 2005 and then begin to
decline as other new products are expected to be introduced.  These  projections
are based on management's  estimates of market size and growth,  expected trends
in technology and the expected timing of new product introductions.  If products
are not successfully  developed,  the Company may not realize the value assigned
to the in-process research and development projects.  In addition,  the value of
the other acquired intangible assets may also become impaired.


8.   Special Charge

During the quarter ended September 26, 1999, the Company's Hard Disk Drive group
recorded a special charge of $59.4 million. The charge reflected HDDG's strategy
to modify the hard disk drive business to more closely align product development
and the business'  operating model with the  requirements of the rapidly growing
low-cost  PC market.  The  special  charge  was  associated  primarily  with the
streamlining  of HDDG's  logistics  model in order to  create a faster  and more
flexible  fulfillment  system,  changes in the  customer  service  strategy  and
consolidation of certain product development programs.  Upon full implementation
of the plan,  HDDG  currently  expects to realize more than $100 million in cost
savings per year, beginning in fiscal year 2001.

The special charge consisted of $26.4 million related to facilities costs, $13.2
million in asset write-offs  related to the streamlining of the global logistics
model and change in customer  service  strategy,  $7.8 million in severance  and
benefits for terminated employees,  and approximately $12 million in other costs
associated with the plan.

The  facilities  costs noted above  include  lease  payments on facilities to be
vacated in and around  Milpitas,  California  and  Singapore,  the  write-off of
related leasehold  improvements,  and other maintenance expenses associated with
the vacated  facilities.  HDDG  expects  that the  affected  facilities  will be
vacated within the next 12 months.

In connection with the charge,  HDDG currently expects a workforce  reduction of
approximately  600 employees.  In addition,  approximately 100 open requisitions
and budgeted  positions have been  eliminated.  The reduction in force primarily
affects  employees  at HDDG's  drive  configuration  centers and  warehouses  in
Milpitas, California and Dundalk, Ireland and employees within the desktop drive
business.  Approximately  115 of the 600  employees  had been  terminated  as of
September  26, 1999.  HDDG  anticipates  that the  remaining  employees  will be
terminated by the end of the second quarter of fiscal year 2001.

As of  September  26, 1999,  HDDG had  incurred $1 million in cash  expenditures
associated  with  employee  severance  and  benefits.   HDDG  expects  to  incur
additional cash  expenditures  associated with employee  severance and benefits,
facilities costs and other costs  associated with the plan of approximately  $35
million.

                                                                              10
<PAGE>


<TABLE>
The following table  summarizes  activity  related to the special charge for the
quarter ended September 26, 1999:

<CAPTION>
(In thousands)                     Severance
                                      And         Facilities                    Other
                                    Benefits        Costs       Inventory       Costs        Total
                                    --------        -----       ---------       -----        -----
<S>                                <C>            <C>           <C>           <C>           <C>
Special charge                     $  7,833       $ 26,359      $ 13,214      $ 12,000      $ 59,406
Cash payments                        (1,021)          --            --            --          (1,021)
                                   --------       --------      --------      --------      ---------
Balance at September 26, 1999      $  6,812       $ 26,359      $ 13,214      $ 12,000      $ 58,385
                                   ========       ========      ========      ========      ========
</TABLE>


9. Comprehensive Income (Loss)

<TABLE>
Accumulated  other  comprehensive  loss on the  condensed  consolidated  balance
sheets consists of foreign currency translation adjustments. Total comprehensive
income  (loss)  for the  three  and six  months  ended  September  26,  1999 and
September 27, 1998, is presented in the following table:

<CAPTION>
(In thousands)                               Three Months Ended                 Six Months Ended
                                      September 26,     September 27,     September 26,    September 27,
                                          1999              1998             1999              1998
                                        --------          --------         --------          --------
<S>                                     <C>               <C>              <C>               <C>
Net income (loss)                       $(62,653)         $ 17,264         $(54,372)         $ 20,275
Other comprehensive income  --
   foreign currency translation
   adjustments                             1,693             1,188              773               183
                                        --------          --------         --------          --------
Comprehensive income (loss)             $(60,960)         $ 18,452         $(53,599)         $ 20,458
                                        ========          ========         ========          ========
</TABLE>


10.   Business Segment Information

Quantum Corporation's  reportable segments are its two business groups, the Hard
Disk Drive group and the DLT & Storage  Systems group,  as further  described in
their  separate  financial  statements.  The Hard Disk Drive  group  consists of
desktop and high-end hard disk drives.  The DLT & Storage Systems group consists
of DLTtape(TM)  drives and media,  autoloaders and libraries,  network  attached
storage systems and solid state storage  systems.  The Company  directly markets
its   products  to  computer   manufacturers   and  through  a  broad  range  of
distributors, resellers, and systems integrators.

The  Company  evaluates  segment  performance  based on net  profit  or loss not
including non-recurring gains or losses. Segment assets include those items that
can be  specifically  identified  with or  reasonably  allocated to a particular
segment.  Results for the  Company's  reportable  segments for the three and six
months ended  September  26, 1999 and  September  27, 1998 are  presented in the
following tables:
                                                                              11

<PAGE>


<TABLE>
<CAPTION>
(In millions)
                                                       Three Months Ended
                                         September 26, 1999            September 27, 1998
                                         ------------------            ------------------
                                    HDDG       DSSG       Total      HDDG      DSSG    Total
                                    ----       ----       -----      ----      ----    -----
<S>                                <C>        <C>        <C>        <C>       <C>     <C>
Revenue                            $   768    $   357    $ 1,125    $   874   $ 291   $ 1,165
Segment profit
(loss)                                 (84)        21        (63)       (35)     52        17

 </TABLE>


<TABLE>
<CAPTION>
(In millions)
                                                        Six Months Ended
                                       September 26, 1999               September 27, 1998
                                       ------------------               ------------------
                                   HDDG        DSSG       Total      HDDG     DSSG       Total
                                   ----        ----       -----      ----     ----       -----
<S>                              <C>           <C>      <C>        <C>       <C>        <C>
Revenue                          $ 1,521       $688     $ 2,208    $ 1,722   $   546    $ 2,268
Segment profit
(loss)                              (127)        73         (54)       (76)       96         20
</TABLE>


                                                                              12

<PAGE>


Item 2.      Management's  Discussion  and Analysis of Financial  Condition  and
             Results of Operations

This report contains  forward-looking  statements  within the meaning of Section
27A of the Securities Act of 1933, as amended, and Section 21E of the Securities
Exchange Act of 1934, as amended. Forward-looking statements usually contain the
words  "estimate,"   "anticipate,"   "expect,"  or  similar   expressions.   All
forward-looking statements are inherently uncertain as they are based on various
expectations  and assumptions  concerning  future events and they are subject to
numerous known and unknown risks and uncertainties.  These  uncertainties  could
cause actual  results to differ  materially  from those expected for the reasons
set forth under Trends and  Uncertainties  relating to the DLT & Storage Systems
group and  Trends  and  Uncertainties  relating  to the Hard Disk  Drive  group.
Readers  are  cautioned  not to place undue  reliance  on these  forward-looking
statements, which speak only as of the date hereof.


Business Description

Quantum  operates its business through two separate  business groups:  the DLT &
Storage  Systems  group  ("DSSG")  and the Hard Disk  Drive  group  ("HDDG")  as
described in their respective sections of this report.


Results of Operations

Revenue. Revenue in the three and six months ended September 26, 1999 was $1.125
billion and $2.208 billion, respectively,  compared to $1.165 billion and $2.268
billion, respectively, for the corresponding periods in fiscal year 1999.

Revenue in the three and six months ended September 26, 1999 reflected increased
revenue from sales of DLTtape  drives,  tape  libraries,  and increased  DLTtape
media royalties, offset by lower revenue from sales of desktop and high-end hard
disk drives.  Revenue from tape  libraries and DLTtape media  royalties  reached
record highs in the three and six month  periods.  The increase in DLTtape drive
revenue reflected an increase in shipments, partially offset by a decline in the
average unit price.  The increase in tape library revenue  reflected an increase
in shipments of tape  libraries and the  acquisition  of ATL  Products,  Inc. in
September 1998. The increase in DLTtape media royalties reflected an increase in
the sales of DLTtape media cartridges at licensed media  manufacturers for which
DSSG earns a royalty  fee.  The  increase in sales of DLTtape  media  cartridges
reflects  sales of cartridges for use in both new DLTtape drives and to meet the
ongoing new media needs of the installed base of DLTtape drives.

While shipments of desktop hard disk drives  increased from the first six months
of fiscal  year  1999,  intense  competitive  pricing  pressures  resulted  in a
significantly  lower  average  unit price and  reduced  desktop  hard disk drive
revenue.  Shipments of high-end  hard disk drives  increased  slightly  from the
first six  months of fiscal  year 1999 as HDDG  completed  a  transition  to new
high-end products, while revenue declined reflecting lower average unit prices.

Sales to our top five customers in the three and six months ended  September 26,
1999 represented 48% and 47% of revenue,  respectively,  compared to 48% for the
corresponding periods in fiscal

                                                                              13
<PAGE>


year 1999. These amounts reflected a retroactive  combination of sales to Compaq
Computer,  Inc. and Digital Equipment Corporation as a result of their merger in
June 1998 as well as a retroactive combination of sales to Ingram Micro Inc. and
Electronic  Resources  Limited as a result of the  completion of their merger in
July 1999. Sales to  Hewlett-Packard  Company were 12% and 13% of revenue in the
three and six months ended September 26, 1999, respectively,  compared to 15% of
sales in the corresponding periods in fiscal year 1999. Sales to Compaq were 12%
of revenue in the three and six months ended  September 26, 1999,  respectively,
compared  to 16% of  revenue  for the  corresponding  periods  in  fiscal  1999,
including sales to Digital Equipment.

Sales to computer  equipment  manufacturers  and distribution  channel customers
were 59% and 35% of  revenue  in the three  months  ended  September  26,  1999,
respectively,  compared to 65% and 32% in the three months ended  September  27,
1998.  For  the  six  months  ended  September  26,  1999,   computer  equipment
manufacturer  and  distribution  channel  sales  were  59% and  35% of  revenue,
compared to 64% and 33% of revenue for the  corresponding  period in fiscal year
1999. The remaining revenue in the three and six months ended September 27, 1998
represented  media  royalty  revenue  and in the  three  and  six  months  ended
September 26, 1999  represented  media royalty  revenue and sales to value added
resellers.


Gross Margin Rate. The gross margin rate in the three months ended September 26,
1999 decreased to 12.0% from 16.5% in the three months ended September 27, 1998.
The  gross  margin  for the first six  months  of  fiscal  year 2000 was  14.3%,
compared to 15.8% in the corresponding period in fiscal year 1999.

The gross  margin  rate in the three and six month  periods of fiscal  year 2000
reflected the impact of a $57.1 million special charge as discussed  below.  The
gross margin rate  excluding the impact of the charge was 17.1% and 16.9% in the
three and six-month periods ended September 26, 1999, respectively.

Excluding  the  impact  of  the  special  charge  in the  three  and  six  month
comparative  periods,  the increase in the gross margin rate reflected increased
revenues from DLTtape drives, storage systems and DLTtape media royalties, which
have  significantly  higher margins than our other products.  This was partially
offset by the decline in gross  margins  earned on desktop hard disk drives as a
result of  intense  competitive  pricing  pressures.  We  expect  to  experience
continued gross margin pressure with respect to desktop hard disk drive products
through at least the third quarter of fiscal year 2000.


Research and  Development  Expenses.  Research and  development  expenses in the
three and six months  ended  September  26, 1999,  were $92 million,  or 8.2% of
revenue,  and $183 million,  or 8.3% of revenue,  respectively,  compared to $83
million, or 7.1% of revenue, and $167 million, or 7.4% of revenue, respectively,
in the  corresponding  periods of fiscal year 1999. The increase in research and
development  expenses  reflected the  consolidation of ATL's expenses which were
not included in the prior year periods, as the acquisition occurred on September
28, 1998, and higher research and development expenses related to new tape drive
products and other new  information  storage  products,  including Super DLTtape
technology.

                                                                              14
<PAGE>


Sales and Marketing Expenses.  Sales and marketing expenses in the three and six
months ended September 26, 1999, were $55 million, or 4.9% of revenue,  and $109
million, or 4.9% of revenue,  respectively,  compared to $45 million, or 3.9% of
revenue, and $84 million, or 3.7% of revenue, respectively, in the corresponding
periods of fiscal  year  1999.  The  increase  in sales and  marketing  expenses
reflected the  consolidation  of ATL's expenses and an increase in marketing and
advertising costs associated with the DLTtape products.  We expect the amount of
sales and  marketing  expenses to  increase in the third  quarter of fiscal year
2000.


General and Administrative Expenses.  General and administrative expenses in the
three and six months  ended  September  26,  1999 were $31  million,  or 2.7% of
revenue,  and $60  million,  or 2.7% of revenue,  respectively,  compared to $21
million, or 1.8% of revenue, and $39 million, or 1.7% of revenue,  respectively,
in the  corresponding  periods of fiscal year 1999.  The increase in general and
administrative  expenses  reflected  the expansion of DSSG's  infrastructure  to
support increased revenue and earnings, the consolidation of ATL's expenses, the
deferral of certain  programs in the first quarter of fiscal year 1999,  and the
implementation  of a new HDDG quality program  reflected in the first quarter of
fiscal year 2000.


Purchased  In-process  Research and Development  Expense.  The Company  expensed
purchased  in-process  research  and  development,  preliminarily  valued at $37
million,  as a result of the  Meridian  acquisition  in the three  months  ended
September  26,  1999.   For  additional   information   regarding  the  Meridian
acquisition and the costs  associated with in-process  research and development,
refer to Note 7 of the Notes to Condensed Consolidated Financial Statements.


Special Charge.  During the three months ended September 26, 1999, the Company's
Hard Disk Drive group recorded a special charge of $59.4 million, of which $57.1
million is included in cost of sales and $2.3  million is included in  operating
expenses.  The charge  reflected  HDDG's  strategy to modify the hard disk drive
business to more closely align product development and the business's  operating
model with the  requirements  of the rapidly  growing  low-cost  PC market.  The
special  charge  was  associated  primarily  with  the  streamlining  of  HDDG's
logistics  model in order to  create  a  faster  and more  flexible  fulfillment
system,  changes in the customer service  strategy and  consolidation of certain
product  development  programs.  Upon  full  implementation  of the  plan,  HDDG
currently  expects to realize  more than $100  million in cost savings per year,
beginning in fiscal year 2001.

The special charge consisted of $26.4 million related to facilities costs, $13.2
million in asset write-offs  related to the streamlining of the global logistics
model and change in customer  service  strategy,  $7.8 million in severance  and
benefits for terminated employees,  and approximately $12 million in other costs
associated with the plan.


Interest and Other Income/Expense.  Net interest and other income and expense in
the three and six months ended  September 26, 1999 was $0.1 million  expense and
$5.1 million  income,  respectively,  compared to $0.6 million  expense and $1.6
million income, respectively,  in the corresponding periods of fiscal year 1999.
The income for the six months ended  September 26,

                                                                              15
<PAGE>

1999  reflected a $2.6 million gain on the sale of an equity  investment  in the
first quarter of fiscal year 2000.


Loss  from  Investee.  The loss  from  investee  reflected  our 49% share in the
operating  losses of our recording heads joint venture with  Matsushita-Kotobuki
Electronics Industries, Ltd., which was dissolved in the third quarter of fiscal
year  1999.  Our  share of the loss in the joint  venture  for the three and six
months  ended   September  27  1998,   was  $17.1  million  and  $41.4  million,
respectively.


Income  Taxes.  No tax benefit  was  recognizable  for the charge for  purchased
in-process research and development related to the acquisition of Meridian.  The
Company recorded a benefit for income taxes before the charge of $20 million and
$16 million for the three months and six months ended September 26, 1999, for an
effective tax benefit rate of 44% and 48%, respectively,  as compared to 30% for
the  corresponding  periods of fiscal year 1999.  The increased tax benefit rate
reflects the effect of the larger  percentage of HDDG losses as compared to DSSG
income.


Liquidity and Capital Resources

Cash, cash equivalents and marketable  securities were $724 million at September
26, 1999  compared to $797 million at March 31,  1999.  The Company used cash to
purchase  $146 million of treasury  stock,  as discussed  below and to invest in
property and equipment.  Sources of cash were a reduction in accounts receivable
and the issuance of common stock.

In September 1999, the Company issued 4.1 million DSSG shares and 2 million HDDG
shares to the  stockholders  of Meridian to complete the acquisition of Meridian
as a wholly owned subsidiary of the Company.  In part, the Company reissued DSSG
and  HDDG  shares  held as  treasury  stock to  complete  the  acquisition.  The
difference  between  the cost of the  treasury  stock and the value at which the
shares were reissued resulted in a $3.5 million addition to  paid-in-capital  in
the quarter ended September 26, 1999. For additional  information  regarding the
Meridian  acquisition,  refer to Note 7 of the Notes to  Condensed  Consolidated
Financial Statements.

In May 1999,  the Board of  Directors  authorized  the Company to  repurchase  a
combined total of up to $200 million of Quantum's common stocks through the open
market from time to time. In part,  the intent of the repurchase was to minimize
the  dilutive  impact  of the  shares  issued to  complete  the  acquisition  of
Meridian.   During  the  six  months  ended  September  26,  1999,  the  Company
repurchased  7.2 million  shares of DSSG common stock and 2.2 million  shares of
HDDG common stock for a combined total of $146 million.

In October 1999, the Board of Directors  authorized an increase in the Company's
stock repurchase  program,  increasing the previously  authorized amount of $200
million  to a total of $600  million.  The  increased  authorization  allows the
Company to repurchase Quantum's common stocks through the open market or through
other  mechanisms.  The increase is intended  primarily  for  repurchase  of the
Company's DSSG common stock.

In December 1998, ATL entered into a senior credit  facility that provides a $35
million  revolving credit line to ATL. The revolving credit line is co-terminous
with our $500 million revolving credit line,  expiring in June 2000. As amended,
at the option of ATL,  borrowings  under the revolving credit line bear interest
at either the London  interbank  offered  rate plus a margin  determined  by our
total funded

                                                                              16
<PAGE>

debt ratio,  or at a base rate,  with option periods of two weeks to six months.
At September 26, 1999,  $10 million was  outstanding on ATL's  revolving  credit
line.

In June 1997, the Company entered into an unsecured  senior credit facility that
provides a $500 million  revolving  credit line and expires in June 2000. At our
option,  borrowings  under the revolving credit line bear interest at either the
London interbank  offered rate plus a margin determined by our total funded debt
ratio, or at a base rate, with option periods of one to six months. At September
26, 1999, there was no outstanding balance drawn on this line.

We expect to spend  approximately  $130  million in fiscal year 2000 for capital
equipment and leasehold  improvements.  These capital  expenditures will support
the disk drive and tape drive businesses,  research and development, and general
corporate operations.

We believe that our existing  capital  resources,  including the credit facility
and any cash generated from operations, will be sufficient to meet all currently
planned  expenditures  and sustain  operations for the next 12 months.  However,
this belief assumes that operating  results and cash flow from  operations  will
meet our expectations.

In fiscal year 1999,  the Company  entered into a strategic  alliance with TiVo,
Inc., to supply hard disk drives utilizing Quantum's QuickViewTM  technology for
integration into TiVo's Personal Video Recorder.  As part of the agreement,  the
Company  received  warrants to purchase  800,000 shares of TiVo common stock. On
September  30,  1999,  subsequent  to the  end of the  Company's  fiscal  second
quarter,  the Company exercised its warrants immediately prior to TiVo's initial
public offering.  The Company is not allowed to sell TiVo common stock for a six
month  period  following  the initial  public  offering and will account for its
investment as an available for sale security.  As a result,  any unrealized gain
or loss will be shown net of tax,  as part of  accumulated  other  comprehensive
income/loss in the equity section of the Company's consolidated balance sheet.

                                                                              17

<PAGE>

Year 2000

The year 2000 computer issue refers to the possibility that computer systems may
not be able to  distinguish  the  year  2000  from  the  year  1900.  Two  other
date-related issues may contribute to the year 2000 problem: (1) certain systems
have associated special values with date fields (for example,  9/9/99),  and (2)
these same systems may fail to recognize that year 2000 is a leap year.  Because
of the  pervasive  use and  dependency  on computer  technology in all facets of
modern commerce,  year 2000 issues present a potentially vast risk to companies,
including us. For example,  there are potential  disruptions  or failures of our
products and  operations  and of the products and  operations of our  suppliers,
customers  and  service  providers.  Because  the year 2000  issue can impact us
indirectly through our suppliers, service providers and customers, an assessment
and prediction of the impact of the year 2000 issue from external parties on our
company is difficult.

We have determined that all critical internal systems are year 2000 compliant as
we  continue  to  implement  plans to address  year 2000  issues both within and
outside  Quantum.  In addressing the year 2000 issues and risks, we have focused
our  efforts  on our  enterprise-wide  and  departmental  operations,  products,
critical  suppliers  (including  service  providers) and key  customers.  Within
Quantum,  these  efforts  are  intended to  encompass  all major  categories  of
computer systems and operating equipment used by us, including those utilized in
manufacturing,  research and development, sales, finance and human resources. To
ensure year 2000 compliance for all of our systems,  we have adopted an approach
based on the U.S.  General  Accounting  Office Year 2000 Assessment  Guide.  The
approach  utilizes  a  multi-phased  model,  with  major  phases  consisting  of
inventory, assessment, resolution, testing and certification:

   o In the inventory  phase we are listing and reviewing  for  criticality  and
     risk all hardware, software, equipment,  infrastructure,  and desktop tools
     and applications.

   o In the assessment  phase,  we are  determining  whether we are  converting,
     replacing or eliminating the impacted system or application.

   o In the resolution phase, we are developing and carrying out a formal plan.

   o Under stringent procedures in the testing phase, we are validating the
     system and application on its  functionality  to perform  seamlessly in the
     year 2000.

   o In the  certification  phase,  we are  documenting  and  verifying all test
     results.

Within each of the major categories of computer systems and operating equipment,
we prioritize our year 2000 issues and risks on three levels:

   o The critical  level reflects  short-term  failure which would have a severe
     impact on our business  operations and result in significant  downtime or a
     manual  effort to perform the  required  functions.  Without this system or
     application, our business could not function.

   o Key  level  applications  or  systems,  although  required  by us,  are not
     mandatory for business survival.  We do not expect the failure of key level
     applications to cause significant disruption

                                                                              18

<PAGE>

     to our  operations.  We  can  defer  the  work  or  devise  manual  back-up
     procedures to handle the interim needs.

   o Active level applications,  although currently in use, are not required for
     our  normal  operations.  We do not expect  their  failure to result in any
     disruption to our business.

We have made  significant  progress in our  preparedness  for year 2000. We have
assessed,  remedied  and  certified  all  critical  and  key  areas  of our  own
operations,  which include  information  technology,  operating  equipment  with
embedded  chips or software and  products.  We continue to address  active level
areas  and  expect to  complete  any  necessary  remediation  of these  areas by
December  1999.  In addition,  we have  completed  the  assessment,  resolution,
testing, and certification of critical and key third parties.

We have developed  contingency  plans for internal systems and third parties and
continue to modify these plans as deemed necessary.

Our  failure  to  complete  critical  corrective  actions  or  implement  viable
contingency plans in a timely manner could have a material adverse effect on our
business, financial condition and operating results.

As indicated above,  our risk assessment  includes  understanding  the year 2000
readiness  of  our  suppliers.  Our  risk  assessment  process  associated  with
suppliers  includes   soliciting  and  analyzing   responses  to  questionnaires
distributed  to these  suppliers,  as well as  onsite  interviews  with  certain
critical  suppliers.  Critical  suppliers  include  a number of  suppliers  with
operations  in  China,  India and  Mexico  that are our sole  source of  certain
components  for tape drives.  We have received 100% of responses from an initial
survey sent to  suppliers  and have  received  100% of  responses  from a second
follow-up  survey sent to those  identified  as critical  suppliers.  To further
assess  year  2000  readiness,  we have  conducted  on-site  visits  of our most
critical suppliers.

The  year  2000   readiness   of   Matsushita-Kotobuki,   our  hard  disk  drive
manufacturing   partner,  is  of  particular   importance.   Matsushita-Kotobuki
implemented  a year 2000  compliance  project  plan in April  1998,  similar  in
content and  structure to that employed by us. We have been informed that all of
Matsushita-Kotobuki's  critical  processes,  applications and hardware have been
tested and certified for year 2000 compliance.  Also, we understand that all key
and active  processes,  applications  and  hardware  are  certified as year 2000
compliant.  We have performed limited on-site evaluations of Matsushita-Kotobuki
operations in Japan, Singapore and Ireland.  Additionally,  we continue to be in
close contact with  Matsushita-Kotobuki and we understand that they will keep us
updated  of any new  developments  concerning  their  year 2000  readiness.  Our
reliance on Matsushita-Kotobuki and other critical suppliers,  and therefore, on
the proper functioning of their information systems and software, means that any
failure by these  critical  suppliers  to address  year 2000 issues could have a
material  adverse  impact on our  business,  financial  condition and results of
operations.  Based on the level of risk assessed of critical suppliers,  we have
developed  contingency  plans.  However,  we do  not  currently  anticipate  any
significant disruption of service from these critical suppliers.

We are also working  closely with key customers to evaluate their  readiness for
year 2000.  The  ability of  customers  to deal with year 2000 issues may affect
their  operations  and their  ability to

                                                                              19
<PAGE>

order and pay for products.  We do not currently  anticipate that customer order
patterns would disrupt our normal course of business.

We believe  that third  party  factors,  rather  than our  internal  systems and
applications,  would be the  cause  of our most  reasonably  likely  worst  case
scenario.  For  example,  since  we  deal  extensively  with  third  parties  to
manufacture  and  transport  products  and  services,  a failure of third  party
systems could result in a disruption  of service,  which may result in delays in
shipments of our products. For internal systems, we are developing  workarounds,
which may  involve  providing  manual or other  automated  processes  in lieu of
normal procedures.

Our products are inherently  year 2000 compliant with the possible  exception of
certain  Meridian  products  manufactured  or released before December 31, 1997.
These Meridian products are no longer supported by Quantum. Our families of disk
drive  products have no internal date clocks,  and therefore are not impacted by
the year  2000  problem.  Our  DLTtape  drives  use a  four-character  string to
describe  the  year  and  will  not  be  affected  by  the  year  2000  problem.
Additionally,  we do not  need to make  any  modifications  to any  disk or tape
drive's  internal  firmware to  accommodate  the transition to the year 2000. We
consider a disk drive or tape  product  to be year 2000  compliant  when used in
accordance with our product information. That product will not generate an error
in data  related to the year change from  December  31, 1999 to January 1, 2000.
Furthermore,  year 2000  compliant  products will  correctly  handle leap years,
including leap years  beginning  January 1, 2000 and  thereafter.  However,  the
assessment of whether a complete  computer system operates  correctly depends on
factors such as the operating system, basic input/output  systems,  software and
components, which companies other than Quantum provide.

Costs incurred to date in addressing the year 2000 issue have been approximately
$10.5  million,  with $7 million and $3.5  million of this cost in the Hard Disk
Drive  group  and  the DLT &  Storage  Systems  group,  respectively.  Based  on
assessment and resolution projects underway,  we currently expect that the total
cost of addressing the year 2000 issue,  including both incremental spending and
redeployed  resources,  will not exceed $15 million,  with $9.5 million and $5.5
million of this cost in the Hard Disk Drive group and the DLT & Storage  Systems
group,  respectively.  However,  as the year 2000 efforts  continue,  we may use
third-party  vendors  or  service  providers  as  necessary  to  assure  that we
successfully meet program  milestones.  The use of these third-party  vendors or
service providers may increase our expected costs. The costs related to the year
2000 effort in fiscal year 2000 are expected to represent  approximately  10% of
our  total  information  technology  budget  for the  fiscal  year.  We have not
deferred any significant  system  projects due to the year 2000 program.  As our
risk assessment and correction  activities continue,  these costs may change. In
addition,  our total cost estimate does not include  potential  costs related to
any customer or other claims  resulting  from our failure to adequately  correct
year 2000 issues.

Based on  assessment  and  remediation  completed to date,  we do not expect any
significant  disruption to our  operations  or operating  results as a result of
year 2000 issues. We are taking all steps we believe are appropriate to identify
and resolve any year 2000 issues;  however, the extent such issues may affect us
is uncertain.  We cannot assure you that we will be able to assess, identify and
correct year 2000 issues in a timely or successful manner. We also cannot assure
you that our suppliers, service providers, customers or other third parties will
be year 2000 compliant.

The foregoing  statements regarding our year 2000 plans and our expectations for
resolving these issues and the costs  associated  therewith are  forward-looking
statements  and actual  results could

                                                                              20
<PAGE>

vary. The severity of the problems to be resolved within Quantum,  the year 2000
issues affecting our suppliers and service  providers,  and the costs associated
with third party  consultants  and software  necessary  to address  these issues
could affect our success in addressing year 2000 issues.


Euro Impact

We believe that the adoption of a single currency,  the Euro, by eleven European
countries  will not  materially  affect  our  business,  information  systems or
consolidated financial position, operating results or cash flows.


Market Risk Disclosures

For  financial  market  risks  related to changes in interest  rates and foreign
currency exchange rates, reference is made to Part II, Item 7A, Quantitative and
Qualitative  Disclosures  About Market Risk, in the  Company's  Annual Report on
Form 10-K for the year ended March 31, 1999.

                                                                              21
<PAGE>


Item 1.  Financial Statements

                                               QUANTUM CORPORATION

                                           DLT & STORAGE SYSTEMS GROUP

<TABLE>
                                   CONDENSED COMBINED STATEMENTS OF OPERATIONS
                                      (In thousands, except per share data)
                                                   (unaudited)

<CAPTION>
                                                Three Months Ended                   Six Months Ended
                                        September 26,      September 27,      September 26,       September 27,
                                             1999              1998               1999                1998
                                          ---------          ---------          ---------          ---------
<S>                                       <C>                <C>                <C>                <C>
Product revenue                           $ 312,074          $ 260,645          $ 603,381          $ 497,304
Royalty revenue                              45,024             29,813             84,461             48,856
                                          ---------          ---------          ---------          ---------

Total revenue                               357,098            290,458            687,842            546,160
Cost of revenue                             186,892            158,783            365,986            300,811
                                          ---------          ---------          ---------          ---------

   Gross profit                             170,206            131,675            321,856            245,349

Operating expenses:
   Research and development                  30,480             21,979             58,205             43,930
   Sales and marketing                       26,599             14,866             51,989             27,633
   General and administrative                15,238              7,264             29,637             13,711
   Purchased in-process research
      and development                        37,000               --               37,000               --
                                          ---------          ---------          ---------          ---------
                                            109,317             44,109            176,831             85,274

   Income from operations                    60,889             87,566            145,025            160,075

Other income (expense):
   Interest income and other, net             3,687              3,825             10,170              8,190
   Interest expense                          (4,812)            (4,488)            (9,656)            (8,753)
                                          ---------          ---------          ---------          ---------
                                             (1,125)              (663)               514               (563)

Income before income taxes                   59,764             86,903            145,539            159,512
Income tax provision                         38,704             34,760             73,014             63,804
                                          ---------          ---------          ---------          ---------
Net income                                $  21,060          $  52,143          $  72,525          $  95,708
                                          =========          =========          =========          =========

Net income per share:
   Basic                                  $    0.13          $    0.34          $    0.44          $    0.62
   Diluted                                $    0.12          $    0.33          $    0.42          $    0.59

Weighted average common shares:
   Basic                                    165,378            151,527            166,019            155,122
   Diluted                                  173,080            162,695            173,029            161,223

<FN>
See accompanying notes to condensed combined financial statements.
</FN>
</TABLE>

                                                                              22

<PAGE>



                               QUANTUM CORPORATION

                           DLT & STORAGE SYSTEMS GROUP

<TABLE>
                        CONDENSED COMBINED BALANCE SHEETS
                                 (In thousands)
<CAPTION>
                                                    September 26,      March 31,
                                                        1999             1999
                                                     ----------         ----------
                                                    (unaudited)
<S>                                                  <C>                <C>
Assets
- ------

Current assets:
   Cash and cash equivalents                         $  292,618         $  272,643
   Marketable securities                                 10,155               --
   Accounts receivable, net of allowance for
      doubtful accounts of $3,420 and $2,507            224,969            254,228
   Inventories                                          122,541            124,462
   Deferred taxes                                        35,701             35,594
   Other current assets                                  32,154              8,434
                                                     ----------         ----------

Total current assets                                    718,138            695,361

Property and equipment, net of accumulated
   depreciation of $66,157 and $54,630                   82,060             73,122
Intangible assets, net                                  288,791            220,368
Other assets                                             13,872             24,792
                                                     ----------         ----------

                                                     $1,102,861         $1,013,643
                                                     ==========         ==========

Liabilities and Group Equity
- ----------------------------

Current liabilities:
   Accounts payable                                  $   84,044         $   64,025
   Accrued warranty                                      48,678             37,988
   Accrued compensation                                  27,774             22,557
   Current portion of long-term debt                        715                683
   Other accrued liabilities                             29,340             32,850
                                                     ----------         ----------

Total current liabilities                               190,551            158,103

Deferred taxes                                           37,955             27,355
Long-term debt                                           32,275             37,974
Convertible subordinated debt                           191,667            191,667
Group equity                                            650,413            598,544
                                                     ----------         ----------

                                                     $1,102,861         $1,013,643
                                                     ==========         ==========
<FN>
See accompanying notes to condensed combined financial statements.
</FN>
</TABLE>

                                                                              23
<PAGE>


                               QUANTUM CORPORATION

                           DLT & STORAGE SYSTEMS GROUP
<TABLE>
                   CONDENSED COMBINED STATEMENTS OF CASH FLOWS
                                 (In thousands)
                                   (unaudited)
<CAPTION>
                                                                              Six Months Ended
                                                                      September 26,     September 27,
                                                                          1999               1998
                                                                        ---------          ---------
<S>                                                                     <C>                <C>
Cash flows from operating activities:
   Net income                                                           $  72,525          $  95,708
   Adjustments to reconcile net income to net cash provided by
      operations:
      Purchased in-process research and development                        37,000               --
      Depreciation                                                         15,377             12,543
      Amortization                                                         11,916              4,736
      Deferred income taxes                                                  (107)              --
      Compensation related to stock plans                                   1,096              2,296
   Changes in assets and liabilities:
      Accounts receivable                                                  29,623            (50,870)
      Inventories                                                           3,062              5,458
      Accounts payable                                                     17,904              9,925
      Accrued warranty                                                     10,105              3,033
      Other assets and liabilities                                        (21,371)             5,929
                                                                        ---------          ---------
Net cash provided by operating activities                                 177,130             88,758
                                                                        ---------          ---------

Cash flows from investing activities:
   Purchases of marketable securities                                         (39)              --
   Acquisition of intangible assets                                        (2,500)              --
   Investment in property and equipment                                   (19,784)           (16,274)
                                                                        ---------          ---------
Net cash used in investing activities                                     (22,323)           (16,274)
                                                                        ---------          ---------

Cash flows from financing activities:
   Proceeds from long-term credit facilities                                6,667               --
   Principal payments on long-term credit facilities                      (12,334)              (304)
   Inter-group payment for common stock issued                             (2,835)              --
   Purchases of treasury stock                                           (144,094)          (264,220)
   Proceeds from issuance of common stock, net                             17,764             13,347
                                                                        ---------          ---------
Net cash used in financing activities                                    (134,832)          (251,177)
                                                                        ---------          ---------

Increase (decrease) in cash and cash equivalents                           19,975           (178,693)
Cash and cash equivalents at beginning of period                          272,643            388,910
                                                                        ---------          ---------
Cash and cash equivalents at end of period                              $ 292,618          $ 210,217
                                                                        =========          =========

Supplemental disclosure of cash flow information:
   Cash paid during the period for:
      Interest                                                          $   8,620          $   8,315
      Income taxes, net of (refunds)                                    $   3,866          $ (25,669)
   Tangible and intangible assets acquired for shares of DSSG
    and HDDG common stock, net of cash acquired and liabilities
    assumed                                                             $ 101,863          $    --
<FN>

See accompanying notes to condensed combined financial statements.
</FN>
</TABLE>
                                                                              24

<PAGE>

                               QUANTUM CORPORATION

                           DLT & STORAGE SYSTEMS GROUP

                NOTES TO CONDENSED COMBINED FINANCIAL STATEMENTS
                                   (unaudited)


1.   Basis of presentation

The accompanying  unaudited condensed combined financial statements of the DLT &
Storage Systems group ("DSSG"),  together with the condensed  combined financial
statements of the Hard Disk Drive group ("HDDG")  include all of the accounts in
the condensed  consolidated  financial statements of Quantum. The separate group
condensed combined financial  statements give effect to the accounting  policies
applicable with the implementation of the tracking stock proposal.  The separate
DSSG and HDDG financial statements have been prepared on a basis that management
believes to be reasonable and appropriate and include (i) the historical balance
sheets,  results of operations,  and cash flows of businesses that comprise each
of the  groups,  with  all  significant  intragroup  transactions  and  balances
eliminated,  (ii) in the case of DSSG's financial  statements,  corporate assets
and  liabilities  of Quantum  and  related  transactions  identified  with DSSG,
including  allocated  portions  of  Quantum's  debt  and  selling,  general  and
administrative  costs,  and  (iii) in the case of HDDG's  financial  statements,
corporate assets and liabilities of Quantum and related transactions  identified
with HDDG,  including allocated portions of Quantum's debt and selling,  general
and administrative costs.

The condensed combined  financial  statements of the DLT & Storage Systems Group
provide DSSG  stockholders  with financial  information  about the DLT & Storage
Systems  group  operations.  Holders of DSSG  stock and HDDG  stock are  Quantum
stockholders and are subject to all of the risks of an investment in Quantum and
all of Quantum's businesses,  assets and liabilities.  Quantum retains ownership
and control of all of the assets and operations of each group. Financial effects
arising from one group that affect Quantum's  consolidated results of operations
or financial  condition could, if significant,  affect the results of operations
or  financial  condition  of the other  group and the market  price of the other
group's stock.  Any net losses of DSSG or HDDG,  and dividends or  distributions
on, or repurchases of HDDG stock,  or repurchases of preferred  stock at a price
per share  greater  than par value,  will  reduce  the funds of Quantum  legally
available for payment of dividends on DSSG stock. As a result,  DSSG's condensed
combined  financial  statements  should be read in  conjunction  with  Quantum's
condensed  consolidated  financial  statements  and  HDDG's  condensed  combined
financial statements.  The condensed combined balance sheet as of March 31, 1999
has  been  derived  from  the  audited  financial  statements  included  in  the
Registration  Statement  on Form S-4 (SEC  File No.  333-75153)  filed  with the
Securities and Exchange Commission,  but does not include all of the information
and footnotes required by generally accepted accounting  principles for complete
financial statements.

These interim financial  statements reflect all adjustments,  consisting only of
normal recurring adjustments which, in the opinion of management,  are necessary
for a fair  presentation  of the results for the periods  shown.  The results of
operations  for such  periods  are not  necessarily  indicative  of the  results
expected  for the full fiscal  year.  Certain  prior  period  amounts  have been
reclassified to conform to the current period's presentation.

                                                                              25

<PAGE>

2.   Inventories

Inventories consisted of the following:
      (In thousands)
                                              September 26,       March 31,
                                                       1999            1999
                                              -------------       ---------

   Materials and purchased parts                   $ 58,716        $ 60,138
   Work in process                                   26,547          22,154
   Finished goods                                    37,278          42,170
                                                   --------        --------
                                                   $122,541        $124,462
                                                   ========        ========


3.   Net income per share

On July 23, 1999,  Quantum's  stockholders  approved the tracking stock proposal
and  Quantum  implemented  the  tracking  stock  proposal  on  August  3,  1999.
Accordingly,  the net income per share for the periods presented below have been
calculated in accordance with the Restated Certificate of Incorporation.

<TABLE>
The following  table sets forth the  computation of basic and diluted net income
per share:


<CAPTION>
(In thousands, except per share data)               Three Months Ended                   Six Months Ended
                                              September 26,     September 27,    September 26,     September 27,
                                                  1999              1998              1999             1998
                                             ----------------  ----------------  ---------------  ----------------
<S>                                                  <C>              <C>              <C>              <C>
Numerator:
   Numerator for basic net income per share
   - income available to common stockholders         $ 21,060         $ 52,143         $ 72,525         $ 95,708

   Effect of dilutive securities:
   7% convertible subordinated notes                     --              2,013             --               --
                                                     --------         --------         --------         --------

   Numerator for diluted net income per
   share - income available to common
   stockholders                                      $ 21,060         $ 54,156         $ 72,525         $ 95,708
                                                     ========         ========         ========         ========

Denominator:
   Denominator for basic net income per
   share - weighted average shares                    165,378          151,527          166,019          155,122

   Effect of dilutive securities:
   Outstanding options                                  7,702            4,962            7,010            6,101
   7% convertible subordinated notes                      --             6,206              --               --
                                                     --------         --------         --------         --------

   Denominator for diluted net income per
   share - adjusted weighted average shares           173,080          162,695          173,029          161,223
                                                     ========         ========         ========         ========

Basic net income per share                           $   0.13         $   0.34         $   0.44         $   0.62
                                                     ========         ========         ========         ========

Diluted net income per share                         $   0.12         $   0.33         $   0.42         $   0.59
                                                     ========         ========         ========         ========
</TABLE>



                                                                              26
<PAGE>

The  computation  of  diluted  net income per share for the three and six months
ended September 26, 1999, and the six months ended September 27, 1998,  excluded
the effect of the 7% convertible  subordinated  notes issued in July 1997, which
are convertible into 6,206,152 shares of DSSG common stock, or 21.587 shares per
$1,000 note, because the effect would have been antidilutive.


4.   Group Equity

In September 1999, Quantum's DLT & Storage Systems group issued 4.1 million DSSG
shares and 1.9 million HDDG shares it had acquired  (and HDDG issued 0.1 million
HDDG shares) to the stockholders of Meridian Data, Inc. ("Meridian") to complete
the  acquisition of Meridian as a wholly owned  subsidiary of Quantum.  In part,
DSSG  reissued  DSSG and HDDG  shares held as  treasury  stock to  complete  the
acquisition. The difference between the cost of the treasury stock and the value
at which the  shares  were  reissued  resulted  in a $3.5  million  addition  to
paid-in-capital  in  the  quarter  ended  September  26,  1999.  For  additional
information regarding the Meridian acquisition,  refer to Note 5 of the Notes to
Condensed Combined Financial Statements.

In May 1999, the Board of Directors  authorized Quantum to repurchase a combined
total of up to $200 million of Quantum's  common stocks  through the open market
from time to time.  In part,  the intent of the  repurchase  was to minimize the
dilutive  impact of the shares issued to complete the  acquisition  of Meridian.
During the six months ended  September 26, 1999,  DSSG  repurchased  7.2 million
shares of DSSG common stock and acquired 1.9 million shares of HDDG common stock
for $144 million,  and HDDG  repurchased 0.3 million shares of HDDG common stock
for $2 million.

In October  1999,  the Board of  Directors  authorized  an increase in Quantum's
stock repurchase  program,  increasing the previously  authorized amount of $200
million to a total of $600  million.  The  increase  is intended  primarily  for
repurchase of DSSG common stock.


5.   Business Combination

On September  10, 1999,  Quantum's  DLT & Storage  Systems  group  completed the
acquisition  of Meridian.  Meridian is a developer and  manufacturer  of network
attached  storage  solutions  utilizing  both  conventional  hard disk drive and
optical  disk  technologies  for the PC  local  area  network  environment.  The
acquisition  has  been  accounted  for as a  purchase  at a  total  cost of $115
million.  The  acquisition was completed with the issuance of 4.1 million shares
of DSSG common  stock and 2 million  shares of HDDG common  stock  valued at $74
million and $18 million,  respectively,  on the date of  acquisition in exchange
for all outstanding shares of Meridian,  the conversion of outstanding  Meridian
stock options into options to purchase  630,000  shares of DSSG common stock and
315,000  shares of HDDG  common  stock  valued  at $8  million  and $2  million,
respectively,  and the assumption of Meridian  liabilities and other acquisition
costs of approximately $13 million. At the date of acquisition, Meridian had $11
million of cash and marketable  securities and a net operating loss carryforward
for U.S.  federal income tax purposes of approximately  $46 million.  Meridian's
results of operations are included in the financial statements as of the date of
acquisition,  and the assets and  liabilities  acquired were  recorded  based on
their fair values as of the date of acquisition. Pro forma results of operations
have not been presented because the effect of the acquisition was not material.

                                                                              27
<PAGE>

The excess of the purchase price over the fair value of the net tangible  assets
acquired has been  allocated to the following  identifiable  intangible  assets:
goodwill,  trademarks,  workforce in place,  developed technology and in-process
research and development.  As of the acquisition date, technological feasibility
of the in-process  technology has not been established and the technology has no
alternative future use. Therefore,  DSSG has expensed the amount of the purchase
price allocated to in-process research and development, estimated at $37 million
as of the date of  acquisition.  This  amount  and the other  components  of the
purchase price allocation are preliminary. The remaining identifiable intangible
assets,  valued at $77 million,  will be amortized on a straight-line basis over
periods ranging from five to ten years.

The  amount  of  the  purchase  price  allocated  to  in-process   research  and
development  was  determined  by  estimating  the stage of  development  of each
in-process  research  and  development  project  at  the  date  of  acquisition,
estimating  cash flows resulting from the expected  revenue  generated from such
projects, and discounting the net cash flows back to their present value using a
discount rate of 21%,  which  represents a premium to Quantum's cost of capital.
The expected  revenue assumes an average  compound annual revenue growth rate of
64% during  calendar  years 1999 through 2007.  Expected  total revenue from the
purchased  in-process  projects  peak in  calendar  year 2005 and then  begin to
decline as other new products are expected to be introduced.  These  projections
are based on management's  estimates of market size and growth,  expected trends
in technology and the expected timing of new product introductions.  If products
are not successfully  developed,  DSSG may not realize the value assigned to the
in-process  research and  development  projects.  In addition,  the value of the
other acquired intangible assets may also become impaired.

                                                                              28
<PAGE>


Item 2.      Management's  Discussion  and Analysis of Financial  Condition  and
             Results of Operations

This report contains  forward-looking  statements  within the meaning of Section
27A of the Securities Act of 1933, as amended, and Section 21E of the Securities
Exchange Act of 1934, as amended. Forward-looking statements usually contain the
words  "estimate,"   "anticipate,"   "expect,"  or  similar   expressions.   All
forward-looking statements are inherently uncertain as they are based on various
expectations  and assumptions  concerning  future events and they are subject to
numerous known and unknown risks and uncertainties.  These  uncertainties  could
cause actual  results to differ  materially  from those expected for the reasons
set forth under Trends and  Uncertainties  relating to the DLT & Storage Systems
group.   Readers  are   cautioned   not  to  place   undue   reliance  on  these
forward-looking statements, which speak only as of the date hereof.


Business Overview

The DLT &  Storage  Systems  group  ("DSSG")  designs,  develops,  manufactures,
licenses  and markets  DLTtape  drives,  DLTtape  media  cartridges  and storage
systems.  DSSG's  storage  systems  consist of DLTtape  libraries,  solid  state
storage systems,  network attached  storage servers,  CD-ROM/DVD-ROM  enterprise
networking  servers,  and a new category of local area network storage appliance
which incorporates a DLTtape library.

DLTtape  products  are used to back up large  amounts of data  stored on network
servers.  Digital Linear Tape, or DLTtape,  is DSSG's  half-inch tape technology
that is the de facto industry standard for data back-up in the mid-range network
server market.  DSSG's DLTtape media  cartridges are  manufactured  primarily by
licensed third party manufacturers.

DSSG's tape  libraries  serve the entire tape library  data storage  market from
desktop  computers  to  enterprise  class  computers.  DSSG's local area network
storage  appliance is designed for remote site  back-up  that  provides  central
management  and Web based  customer  service.  With the  acquisition of Meridian
Data, Inc. completed in September, 1999, DSSG has become a leader in the rapidly
emerging market for network attached storage  appliances with products  designed
to meet the  requirements of entry and workgroup  level  computing  environments
where  multiple  computer  users  access  shared  data  files  over a local area
network.

Prior to 1998,  DSSG derived revenue from the direct sale of both DLTtape drives
and DLTtape media  cartridges.  Beginning in 1998,  DSSG's  licensed third party
DLTtape media  manufacturers  also began selling DLTtape media cartridges.  DSSG
receives a royalty fee on DLTtape media  cartridges sold by its licensees which,
while  resulting  in lower  revenue than  DLTtape  media sold  directly by DSSG,
generates  comparable  income  from  operations.   DSSG  prefers  DLTtape  media
cartridge sales to occur through its license model because this minimizes DSSG's
operational  risks and  expenses  and  provides  a more  efficient  distribution
channel.  Currently,  over 80% of media sales occur through this license  model.
DSSG believes that the large  installed base of DLTtape drives and its licensing
of DLTtape drives and media cartridges give DSSG a unique competitive advantage.

                                                                              29
<PAGE>


Products

     The DLT & Storage Systems group's products include:

     DLT:
     ----

     o   DLTtape drives. DSSG offers three tape drive products--the DLT8000, the
         DLT7000 and the  DLT4000.  The  DLT8000  provides a  combination  of 40
         gigabytes  (GB)  of native  capacity (80GB  compressed) and a sustained
         data  transfer rate of 6 megabytes  (MB) per second (12MB  compressed).
         The DLT7000  provides a combination  of 35GB of native  capacity  (70GB
         compressed)  and a sustained data transfer rate of 5MB per second (10MB
         compressed).  The  DLT4000  provides  a  combination  of 20GB of native
         capacity (40GB  compressed) and a sustained data transfer rate of 1.5MB
         per second (3MB compressed).

     o   DLTtape media  cartridges.  The DLTtape  family of half-inch tape media
         cartridges  are  designed  and  formulated  specifically  for use  with
         DLTtape drives. The capacity of a DLTtape media cartridge is up to 40GB
         (80GB  compressed).  DSSG's half-inch tape cartridges take advantage of
         shorter wavelength  recording schemes to enable read compatibility with
         future  generations  of  DLTtape  drives  such as those  based on Super
         DLTtape technology.

     Storage Systems:
     ----------------

     o   Tape libraries. DSSG offers a broad line of automated DLTtape libraries
         that support a wide range of back-up and archival  needs from workgroup
         servers to enterprise-class  servers.  DSSG's tape libraries range from
         its tape autoloaders which accommodate a single DLTtape drive and up to
         280GB of storage  capacity to the P3000 series  library which  features
         Prism Library  Architecture(TM) and can be configured in multiple units
         to scale up to 11.4 Terabytes of storage  capacity.  In addition,  DSSG
         offers WebAdmin(TM),  the industry's first Internet  browser-based tape
         library  management system,  allowing system  administrators to monitor
         widely   distributed   storage   systems  at  remote   locations   with
         point-and-click ease.

     o   Solid state  storage  systems.  DSSG offers two families of solid state
         storage systems that are available in capacities  ranging from 134MB to
         3.2GB and have data  access  times that are up to 15 times  faster than
         magnetic hard disk drives.  Solid state  storage  systems store data on
         memory chips which enable  significantly  faster data access times than
         magnetic disks used in standard hard disk drives.

     o   Network attached storage  systems.  DSSG's Snap!  Server (TM) family of
         network attached storage appliances offers options for 20GB and 40GB of
         network  storage.  These  products  provide  the ease of  plug-and-play
         features  and can be  directly  attached to  workgroup-level  networks,
         providing  instant  additional  network  storage  capacity.  No special
         configurations  are needed for ordinary use and advanced  configuration
         options enable added value features.

     o   CD-ROM/DVD-ROM  enterprise networking systems. DSSG offers two families
         of CD-ROM/DVD-ROM  workgroup  servers--network  attached  solutions and
         SCSI attached solutions.

     o   LANvault  (TM) tape  backup  appliance.  DSSG  recently  announced  the
         introduction  of  LANvault,   a  product  that  incorporates  a  backup
         appliance with a DLTtape library,  a central  management  console and a
         customer  service  Web  portal.  This  product is  intended to meet the

                                                                              30
<PAGE>

     requirements  for remote site  backup and is  designed  as a  plug-and-play
     appliance  preloaded  with  industry-standard  backup  software for ease of
     installation and use.


Results of Operations

Revenue.  Revenue in the three and six months ended  September 26, 1999 was $357
million  and $688  million,  respectively,  compared  to $290  million  and $546
million,  respectively,  for the corresponding  periods in fiscal year 1999. The
increase in revenue  reflected  increased  revenue from sales of DLTtape drives,
tape  libraries  and  increased  DLTtape  media  royalties.  Revenue  from  tape
libraries and DLTtape media royalties  reached record highs in the three and six
month  periods.  The increase in DLTtape drive revenue  reflected an increase in
shipments, partially offset by a decline in the average unit price. The increase
in tape library revenue reflected an increase in shipments of tape libraries and
the acquisition of ATL Products, Inc. in September 1998. The increase in DLTtape
media royalties  reflected an increase in the sales of DLTtape media  cartridges
at licensed media  manufacturers for which DSSG earns a royalty fee. The overall
increase in sales of DLTtape media  cartridges  reflects sales of cartridges for
use in both new  DLTtape  drives and to meet the  ongoing new media needs of the
installed base of DLTtape drives.

<TABLE>
The table below summarizes the components of DSSG's revenue in the three and six
months ended September 26, 1999 and September 27, 1998:

<CAPTION>
(in millions)                       Three Months Ended                         Six Months Ended
                             September 26,        September 27,        September 26,        September 27,
                                 1999                 1998                 1999                 1998
                                 ----                 ----                 ----                 ----
<S>                              <C>                  <C>                  <C>                  <C>
DLT drives                       $219                 $192                 $438                 $350
DLT media                          36                   50                   64                  113
DLT royalty                        45                   30                   84                   49
Storage systems                    82                   18                  149                   34
Intra-group elimination*          (25)                   -                  (47)                   -
                                 ----                 ----                 ----                 ----

   Revenue                       $357                 $290                 $688                 $546
                                 ====                 ====                 ====                 ====
<FN>
* Represents  intra-group sales of DLTtape drives for incorporation  into DSSG's
  tape libraries.
</FN>
</TABLE>

Sales to the top five customers in the three and six months ended  September 26,
1999 represented 47% and 48% of revenue,  respectively,  compared to 56% and 55%
of revenue,  respectively,  for the  corresponding  periods in fiscal year 1999.
These amounts reflected a retroactive combination of sales to Compaq and Digital
Equipment as a result of their merger in June 1998. Sales to Compaq were 18% and
20%  of  revenue  in  the  three  and  six  months  ended  September  26,  1999,
respectively,  compared  to  27%  and  26%  of  revenue,  respectively,  in  the
corresponding periods in fiscal year 1999, including sales to Digital Equipment.
Sales to Hewlett Packard were 16% and 15% of revenue in the three and six months
ended  September  26,  1999,  respectively,  compared to 14% and 13% of revenue,
respectively, in the corresponding periods in fiscal year 1999.

Sales to computer  equipment  manufacturers  and distribution  channel customers
were 62% and 18% of  revenue  in the three  months  ended  September  26,  1999,
respectively,  compared  to 72% and 18% of  revenue  in the three  months  ended
September  27, 1998.  For the six months  ended  September  26,
                                                                              31
<PAGE>


1999,  computer equipment  manufacturer and distribution  channel sales were 65%
and 15% of  revenue,  compared  to 73% and 18% of revenue  in the  corresponding
period of fiscal year 1999.  The  remaining  revenue in the three and six months
ended September 27, 1998 represented  media royalty revenue and in the three and
six months ended September 26, 1999, represented media royalty revenue and sales
to value-added resellers.


Gross Margin Rate. The gross margin rate in the three months ended September 26,
1999, was 47.7%, compared to 45.3% in the three months ended September 27, 1998.
The gross  margin  rate for the first six  months of fiscal  year 2000 was 46.8%
compared to 44.9% for the corresponding period of fiscal year 1999. The increase
in the gross  margin rate  reflected  an increase in the  proportion  of overall
revenue  represented  by DLTtape media  royalty  revenue  partially  offset by a
decline in the gross margin rate earned on DLTtape drives.


Research and  Development  Expenses.  Research and  development  expenses in the
three and six months  ended  September  26, 1999,  were $30 million,  or 8.5% of
revenue,  and $58  million,  or 8.5% of revenue,  respectively,  compared to $22
million, or 7.6% of revenue, and $44 million, or 8.0% of revenue,  respectively,
in the  corresponding  periods in fiscal year 1999. The increase in research and
development  expenses  reflected the combining of ATL's  expenses which were not
included in the prior year periods, as the acquisition occurred on September 28,
1998, and higher  research and  development  expenses  related to new tape drive
products and other new  information  storage  products,  including Super DLTtape
technology.


Sales and Marketing Expenses.  Sales and marketing expenses in the three and six
months ended September 26, 1999, were $27 million,  or 7.4% of revenue,  and $52
million, or 7.6% of revenue,  respectively,  compared to $15 million, or 5.1% of
revenue, and $28 million, or 5.1% of revenue, respectively, in the corresponding
periods in fiscal  year  1999.  The  increase  in sales and  marketing  expenses
reflected the increased level of sales, the combining of ATL's expenses,  and an
overall  increase in marketing and  advertising  costs  associated  with DLTtape
products. DSSG expects the amount of sales and marketing expenses to increase in
the third quarter of fiscal year 2000 as a result of including a full quarter of
expenses relating to the Meridian acquisition.


General and Administrative Expenses.  General and administrative expenses in the
three and six months  ended  September  26, 1999,  were $15 million,  or 4.3% of
revenue,  and $30  million,  or 4.3% of  revenue,  respectively,  compared to $7
million, or 2.5% of revenue, and $14 million, or 2.5% of revenue,  respectively,
in the  corresponding  periods of fiscal year 1999.  The increase in general and
administrative  expenses  reflected  the expansion of DSSG's  infrastructure  to
support increased revenue and earnings, the combining of ATL's expenses, and the
amortization  of  intangible  assets,  particularly  goodwill.  DSSG expects the
amount of general and  administrative  expenses to increase in the third quarter
of fiscal year 2000 as a result of including a full quarter of  amortization  of
intangible assets acquired as part of the Meridian acquisition.


Purchased In-process Research and Development  Expense.  DSSG expensed purchased
in-process research and development,  preliminarily  valued at $37 million, as a
result of the Meridian

                                                                              32
<PAGE>


acquisition  in the three  months  ended  September  26,  1999.  For  additional
information  regarding the Meridian  acquisition  and the costs  associated with
in-process  research and development,  refer to Note 5 of the Notes to Condensed
Combined Financial Statements.


Interest and Other Income/Expense.  Net interest and other income and expense in
the three and six months ended  September 26, 1999 was $1.1 million  expense and
$0.5 million  income,  respectively,  compared to $0.7 million  expense and $0.6
million expense, respectively, in the corresponding periods of fiscal year 1999.
The income for the six months ended  September 26, 1999 reflected a $2.6 million
gain on the sale of an equity  investment  recognized  in the first  quarter  of
fiscal year 2000.


Income  Taxes.  No tax benefit  was  recognizable  for the charge for  purchased
in-process  research and  development  related to the  acquisition  of Meridian.
DSSG's effective tax rate for the three and six months ended September 26, 1999,
and September 27, 1998, was 40%.


Liquidity and Capital Resources

Operating Activities. DSSG generated cash from operations of $177 million in the
six months ended  September  26, 1999  compared to $89 million in the six months
ended September 27, 1998. The increase  primarily  reflected  higher net income,
excluding the non-cash charge for purchased in-process research and development,
and collection of accounts receivable.

Investing  Activities.  Investments  in the six months ended  September 26, 1999
were $22  million,  consisting  of  investments  in property and  equipment  and
acquisition of intangible assets.  Investments in the six months ended September
27, 1998 totaled $16 million.

Financing Activities.  At September 26, 1999, and March 31, 1999, Quantum's debt
allocated  to DSSG  was  $225  million  and  $230  million,  respectively.  Debt
allocated  to DSSG  bears  interest  at a rate  equal  to the  weighted  average
interest  rate of Quantum's  total debt,  calculated  on a quarterly  basis.  At
September  26,  1999,  Quantum  had total debt of $337  million  with an average
interest rate of 8.5%. As discussed below, in the six months ended September 26,
1999, DSSG used cash to purchase $144 million of treasury stock.

In September 1999, Quantum's DLT & Storage Systems group issued 4.1 million DSSG
shares and 1.9 million HDDG shares it had acquired  (and HDDG issued 0.1 million
HDDG  shares) to the  stockholders  of Meridian to complete the  acquisition  of
Meridian as a wholly owned  subsidiary of Quantum.  In part,  DSSG reissued DSSG
and  HDDG  shares  held as  treasury  stock to  complete  the  acquisition.  The
difference  between  the cost of the  treasury  stock and the value at which the
shares were reissued resulted in a $3.5 million addition to  paid-in-capital  in
the quarter ended September 26, 1999. For additional  information  regarding the
Meridian  acquisition,  refer  to  Note 5 of the  Notes  to  Condensed  Combined
Financial Statements.

In May 1999, the Board of Directors  authorized Quantum to repurchase a combined
total of up to $200 million of Quantum's  common stocks  through the open market
from time to time.  In part,  the intent of the  repurchase  was to minimize the
dilutive  impact of the shares issued to complete the

                                                                              33
<PAGE>

acquisition of Meridian.  During the six months ended  September 26, 1999,  DSSG
repurchased  7.2 million  shares of DSSG common  stock and  acquired 1.9 million
shares of HDDG common stock for $144 million,  and HDDG  repurchased 0.3 million
shares of HDDG common stock for $2 million.

In October  1999,  the Board of  Directors  authorized  an increase in Quantum's
stock repurchase  program,  increasing the previously  authorized amount of $200
million to a total of $600 million.  The increased  authorization allows Quantum
to  repurchase  its common  stocks  through  the open  market or  through  other
mechanisms.  The increase is intended  primarily  for  repurchase of DSSG common
stock.

In December 1998, ATL entered into a senior credit  facility that provides a $35
million  revolving credit line to ATL. The revolving credit line is co-terminous
with Quantum's  $500 million  revolving  credit line,  expiring in June 2000. As
amended,  at the option of ATL,  borrowings under the revolving credit line bear
interest at either  London  interbank  offered rate plus a margin  determined by
Quantum's total funded debt ratio, or at a base rate, with option periods of two
weeks to six months.  At September 26, 1999, $10 million was outstanding on this
revolving credit line.

In June 1997,  Quantum  entered into an unsecured  senior  credit  facility that
provides a $500  million  revolving  credit  line and  expires in June 2000.  At
Quantum's  option,  borrowings  under the revolving credit line bear interest at
either  London  interbank  offered  rate plus a margin  determined  by our total
funded debt ratio,  or at a base rate, with option periods of one to six months.
At September 26, 1999, there was no outstanding balance drawn on this line.

DSSG expects to spend  approximately $70 million in fiscal year 2000 for capital
equipment and leasehold  improvements.  These capital  expenditures will support
the DLTtape  product  line,  production  of Super  DLTtape  products  and DSSG's
general infrastructure.

DSSG expects its cash flow from  operations,  together with available  financing
sources,  will be  sufficient  to meet all currently  planned  expenditures  and
sustain  operations  for the next 12 months.  However,  this belief assumes that
operating results and cash flow from operations will meet our expectations.


Trends and Uncertainties Relating to the DLT & Storage Systems Group

Holders  of DSSG  stock  remain  stockholders  of one  company  and,  therefore,
financial effects on HDDG could adversely affect DSSG

Holders of DSSG stock and HDDG stock are stockholders of a single company.  DSSG
and HDDG  are not  separate  legal  entities.  As a  result,  stockholders  will
continue to be subject to all of the risks of an  investment  in Quantum and all
of its businesses,  assets and  liabilities.  The issuance of the DSSG stock and
the HDDG stock and the allocation of assets and  liabilities  and  stockholders'
equity  between  DSSG and HDDG did not result in a  distribution  or spin-off to
stockholders of any Quantum assets or liabilities  and did not affect  ownership
of  our  assets  or   responsibility   for  our  liabilities  or  those  of  our
subsidiaries.  The  assets we  attribute  to one group  could be  subject to the
liabilities of the other group,  whether such  liabilities  arise from lawsuits,
contracts or indebtedness that we attribute to the other group. If we are unable
to satisfy one group's  liabilities out of the assets we attribute to it, we may
be required to satisfy those  liabilities  with assets we attribute to the other
group.

                                                                              34
<PAGE>

Financial  effects  from one group  that  affect  our  consolidated  results  of
operations or financial  condition could, if significant,  affect the results of
operations or financial condition of the other group and the market price of the
tracking  stock relating to the other group.  In addition,  net losses of either
group and dividends and  distributions  on, or  repurchases  of, either class of
tracking stock or  repurchases  of preferred  stock at a price per share greater
than par value will reduce the funds we can pay on each class of tracking  stock
under  Delaware  law.  For  these  reasons,  you  should  read our  consolidated
financial information with the financial information we provide for each group.


Competition  may  increase  in the  tape  drive  market  as a  result  of  large
competitors introducing tape drive products based on new technology standards

DSSG competes with  companies  that develop,  manufacture,  market and sell tape
drive  products.  DSSG's  principal  competitors  include  Exabyte  Corporation,
Hewlett-Packard,  Seagate  Technology,  Inc.,  Sony  Corporation and StorageTek.
These competitors are aggressively trying to develop new tape drive technologies
that compete more successfully with DLTtape technology. Hewlett-Packard, IBM and
Seagate have formed a consortium to develop new linear tape drive products. DSSG
expects  products  based on this  developing  technology  standard to target the
high-capacity  data back-up market and to compete with DSSG's  products based on
Super DLTtape technology.  Such competition could have a material adverse impact
on DSSG's operating results.


DSSG's operating  results depend on new product  introductions  which may not be
successful

To compete  effectively,  DSSG must improve existing  products and introduce new
products,  such as  products  based  on Super  DLTtape  technology  and  network
attached storage appliances. DSSG cannot assure you that:

     o   it will  introduce  any of these new  products  in the time  frame DSSG
         currently forecasts;

     o   it will not  experience  technical  or other  difficulties  that  could
         prevent or delay the introduction of these new products;

     o   its new products will achieve market acceptance;

     o   its new products will be successfully  or timely  qualified with DSSG's
         customers by meeting customer performance and quality specifications. A
         successful  and  timely  customer   qualification   must  occur  before
         customers will place large product orders; or

     o   it will  achieve  high  volume  production  of these new  products in a
         timely manner, if at all.

This risk is magnified because DSSG expects  technological  changes,  changes in
customer requirements and increasing competition could result in declining sales
and gross margins on its existing products.

                                       35
<PAGE>


Reliance  on  a  limited  number  of  third-party   suppliers  could  result  in
significantly increased costs and delays in the event these suppliers experience
shortages or quality problems

DSSG depends on a limited number of suppliers for components and sub-assemblies,
including  recording  heads,  media cartridges and integrated  circuits,  all of
which are essential to the  manufacture  of DLTtape  drives and tape  libraries.
DSSG currently  purchases the DLTtape media  cartridges it sells  primarily from
Fuji Photo Film Co., Ltd. and Hitachi  Maxell,  Ltd. DSSG cannot assure you that
Fuji or Maxell will continue to supply adequate high quality media cartridges in
the  future.  If  component  shortages  occur,  or if DSSG  experiences  quality
problems with component suppliers,  shipments of products could be significantly
delayed and/or costs significantly increased. In addition, DSSG qualifies only a
single source for many components and  sub-assemblies,  which magnifies the risk
of future shortages.


DSSG's  sole   supplier  of  tape  heads  is  located  in  China  and  political
instability,  trade restrictions or currency fluctuations in China could have an
adverse impact on DSSG's operating results.

DSSG's  sole   supplier  of  tape  heads  is  located  in  China  and  political
instability, trade restrictions,  changes in tariff or freight rates or currency
fluctuations  in China could result in increased  costs,  delays in shipment and
could have an adverse impact on DSSG's operating results.


DSSG's  quarterly  operating  results  could  fluctuate  significantly  and past
quarterly operating results should not be used to predict future performance

DSSG's quarterly operating results have fluctuated significantly in the past and
could fluctuate  significantly in the future.  Quarterly operating results could
be adversely affected by:

     o   delayed  technology  purchases  as a result of caution  before the year
         2000 transition;

     o   an inadequate supply of DLTtape media cartridges;

     o   customers canceling,  deferring or rescheduling significant orders as a
         result of excess inventory levels or other factors;

     o   declines in network server demand; or

     o   failure to  complete  shipments  in the last month of a quarter  during
         which a substantial portion of DSSG's products are typically shipped.


A  majority  of sales  come from a few  customers  and these  customers  have no
minimum or long-term purchase commitments

DSSG's sales are concentrated with a few customers.  Customers are not obligated
to  purchase  any  minimum  product  volume  and DSSG's  relationships  with its
customers are terminable at will. The

                                                                              36
<PAGE>

loss of, or a significant change in demand from, one or more key customers could
materially adversely impact DSSG's operating results.


Unpredictable end-user demand may cause excess inventories which could result in
inventory write-downs or losses or insufficient inventories which could have and
an adverse impact on DSSG's customer relationships

Unpredictable end-user demand, combined with the computer equipment manufacturer
trend toward carrying  minimal  inventory  levels,  increases the risk that DSSG
will  manufacture  and custom  configure  too much or too little  inventory  for
particular  customers.  Significant  excess  inventory could result in inventory
write-downs and losses while inventory  shortages could adversely  impact DSSG's
relationship  with its customers,  either of which could adversely impact DSSG's
operating results.


DSSG does not  control  licensee  pricing or  licensee  sales of  DLTtape  media
cartridges and as a result DSSG's royalty revenue may decline

DSSG receives a royalty fee based on sales of DLTtape  media  cartridges by Fuji
and Maxell.  Under DSSG's license  agreements with Fuji and Maxell,  each of the
licensees  determine the pricing and number of units of DLTtape media cartridges
sold by it. As a result,  DSSG's  royalty  revenue will vary  depending upon the
level of sales and prices set by Fuji and Maxell.  In addition,  lower  licensee
pricing  could require DSSG to lower its prices on direct sales of DLTtape media
cartridges which would adversely impact DSSG's margins for this product.


Third party  infringement  claims  could  result in  substantial  liability  and
significant costs

From time to time,  third parties allege DSSG's  infringement  of and need for a
license under their patented or other proprietary technology. Adverse resolution
of any  third  party  infringement  claim  could  subject  DSSG  to  substantial
liabilities  and require it to refrain from  manufacturing  and selling  certain
products.  In addition,  the costs incurred in intellectual  property litigation
can be substantial, regardless of the outcome.

                                                                              37
<PAGE>


Item 1.  Financial Statements

                                                  QUANTUM CORPORATION

                                                 HARD DISK DRIVE GROUP

<TABLE>
                                      CONDENSED COMBINED STATEMENTS OF OPERATIONS
                                         (In thousands, except per share data)
                                                      (unaudited)

<CAPTION>
                                                   Three Months Ended                       Six Months Ended
                                          September 26,       September 27,        September 26,        September 27,
                                              1999                 1998                1999                 1998
                                          -----------          -----------          -----------          -----------
<S>                                       <C>                  <C>                  <C>                  <C>
Revenue                                   $   768,214          $   874,253          $ 1,520,705          $ 1,721,574
Cost of revenue - on net sales                745,989              814,039            1,470,211            1,608,661
Cost of revenue - special charge               57,068                 --                 57,068                 --
                                          -----------          -----------          -----------          -----------

   Gross profit (loss)                        (34,843)              60,214               (6,574)             112,913

Operating expenses:
   Research and development                    61,973               60,661              124,681              123,008
   Sales and marketing                         28,860               30,520               56,691               56,090
   General and administrative                  15,332               14,230               30,077               25,184
   Special charge                               2,338                 --                  2,338                 --
                                          -----------          -----------          -----------          -----------
                                              108,503              105,411              213,787              204,282

   Loss from operations                      (143,346)             (45,197)            (220,361)             (91,369)

Other income (expense):
   Interest income and other, net               3,423                2,307                9,387                6,645
   Interest expense                            (2,406)              (2,237)              (4,770)              (4,474)
   Loss from investee                            --                (17,113)                --                (41,350)
                                          -----------          -----------          -----------          -----------
                                                1,017              (17,043)               4,617              (39,179)

Loss before income taxes                     (142,329)             (62,240)            (215,744)            (130,548)
Income tax benefit                            (58,642)             (27,362)             (88,873)             (55,116)
                                          -----------          -----------          -----------          -----------

Net loss                                  $   (83,687)         $   (34,878)         $  (126,871)         $   (75,432)
                                          ===========          ===========          ===========          ===========


Net loss per share:
   Basic                                  $     (1.01)         $     (0.46)         $     (1.53)         $     (0.97)
   Diluted                                $     (1.01)         $     (0.46)         $     (1.53)         $     (0.97)

Weighted average common shares:
   Basic                                       82,883               75,763               83,107               77,561
   Diluted                                     82,883               75,763               83,107               77,561

<FN>
See accompanying notes to condensed combined financial statements.
</FN>
</TABLE>

                                                                              38
<PAGE>


                               QUANTUM CORPORATION

                              HARD DISK DRIVE GROUP

                        CONDENSED COMBINED BALANCE SHEETS
                                 (In thousands)

                                                 September 26,     March 31,
                                                     1999            1999
                                                  ----------      ----------
                                                 (unaudited)
Assets
- ------

Current assets:
   Cash and cash equivalents                      $  396,392      $  499,725
   Marketable securities                              24,479          24,426
   Accounts receivable, net of allowance for
      doubtful accounts of $7,001 and $9,623         367,289         392,329
   Inventories                                       151,132         147,524
   Deferred taxes                                     72,000          72,107
   Other current assets                              117,797          96,401
                                                  ----------      ----------

Total current assets                               1,129,089       1,232,512

Property and equipment, net of accumulated
   depreciation of $201,383 and $236,987             189,570         198,806
Intangible assets, net                                 3,557           5,199
Other assets                                          32,748          33,436
                                                  ----------      ----------

                                                  $1,354,964      $1,469,953
                                                  ==========      ==========

Liabilities and Group Equity
- ----------------------------

Current liabilities:
   Accounts payable                               $  293,320      $  342,344
   Accrued warranty                                   44,480          38,917
   Accrued compensation                               41,126          51,048
   Income taxes payable                               26,004          33,411
   Current portion of long-term debt                     357             341
   Other accrued liabilities                         122,494          57,841
                                                  ----------      ----------

Total current liabilities                            527,781         523,902

Deferred taxes                                        40,390          39,985
Long-term debt                                        16,137          18,987
Convertible subordinated debt                         95,833          95,833
Group equity                                         674,823         791,246
                                                  ----------      ----------
                                                  $1,354,964      $1,469,953
                                                  ==========      ==========

See accompanying notes to condensed combined financial statements.

                                                                              39
<PAGE>


                                               QUANTUM CORPORATION

                                              HARD DISK DRIVE GROUP

<TABLE>
                                   CONDENSED COMBINED STATEMENTS OF CASH FLOWS
                                                 (In thousands)
                                                   (unaudited)
<CAPTION>
                                                                                      Six Months Ended
                                                                               September 26,      September 27,
                                                                                    1999              1998
                                                                                 ---------          ---------
<S>                                                                              <C>                <C>
  Cash flows from operating activities:
     Net loss                                                                    $(126,871)         $ (75,432)
     Adjustments to reconcile net loss to net cash provided by (used in)
        operations:
        Special charge                                                              58,385               --
        Loss from investee                                                            --               41,350
        Depreciation                                                                33,119             32,798
        Amortization                                                                 1,956              2,576
        Deferred income taxes                                                          512              1,003
        Compensation related to stock plans                                            544              1,147
     Changes in assets and liabilities:
        Accounts receivable                                                         25,040            125,784
        Inventories                                                                 (3,608)            13,777
        Accounts payable                                                           (49,024)           (58,820)
        Income taxes payable                                                        (7,407)           (11,693)
        Accrued warranty                                                             5,563             (4,754)
        Other assets and liabilities                                               (15,601)            10,568
                                                                                 ---------          ---------
  Net cash provided by (used in) operating activities                              (77,392)            78,304
                                                                                 ---------          ---------

  Cash flows from investing activities:
     Purchases of marketable securities                                            (33,367)           (48,798)
     Maturities of marketable securities                                            33,314             91,131
     Investment in property and equipment                                          (30,125)           (41,168)
                                                                                 ---------          ---------
  Net cash provided by (used in) investing activities                              (30,178)             1,165
                                                                                 ---------          ---------

  Cash flows from financing activities:
     Proceeds from long-term credit facilities                                       3,333               --
     Principal payments on long-term credit facilities                              (6,167)              (153)
     Inter-group proceeds for common stock issued                                    2,835               --
     Purchase of treasury stock                                                     (1,558)              --
     Proceeds from issuance of common stock, net                                     5,794              6,673
                                                                                 ---------          ---------
  Net cash provided by financing activities                                          4,237              6,520
                                                                                 ---------          ---------

  Increase (decrease) in cash and cash equivalents                                (103,333)            85,989
  Cash and cash equivalents at beginning of period                                 499,725            253,240
                                                                                 ---------          ---------
  Cash and cash equivalents at end of period                                     $ 396,392          $ 339,229
                                                                                 =========          =========
  Supplemental disclosure of cash flow information:
    Cash paid during the period for:
        Interest                                                                 $   4,361          $   4,157
        Income taxes                                                             $  14,475          $  17,853
<FN>
See accompanying notes to condensed combined financial statements.
</FN>
</TABLE>

                                                                              40
<PAGE>



                               QUANTUM CORPORATION

                              HARD DISK DRIVE GROUP

                NOTES TO CONDENSED COMBINED FINANCIAL STATEMENTS
                                   (unaudited)


1.   Basis of presentation

The accompanying  unaudited condensed combined financial  statements of the Hard
Disk Drive  group  ("HDDG"),  together  with the  condensed  combined  financial
statements  of the DLT &  Storage  Systems  group  ("DSSG")  include  all of the
accounts in the condensed  consolidated  financial  statements  of Quantum.  The
separate  group  condensed  combined  financial  statements  give  effect to the
accounting  policies  applicable with the  implementation  of the tracking stock
proposal.  The separate HDDG and DSSG financial statements have been prepared on
a basis that  management  believes to be reasonable and  appropriate and include
(i) the historical  balance  sheets,  results of  operations,  and cash flows of
businesses  that comprise each of the groups,  with all  significant  intragroup
transactions  and  balances  eliminated,  (ii) in the case of  HDDG's  financial
statements, corporate assets and liabilities of Quantum and related transactions
identified  with  HDDG,  including  allocated  portions  of  Quantum's  debt and
selling,  general  and  administrative  costs,  and  (iii) in the case of DSSG's
financial  statements,  corporate  assets and liabilities of Quantum and related
transactions  identified with DSSG,  including  allocated  portions of Quantum's
debt and selling, general and administrative costs.

The condensed combined financial statements of the Hard Disk Drive group provide
HDDG  stockholders  with financial  information  about the Hard Disk Drive group
operations.  Holders of HDDG stock and DSSG stock are Quantum  stockholders  and
are subject to all of the risks of an investment in Quantum and all of Quantum's
businesses, assets and liabilities. Quantum retains ownership and control of all
of the assets and operations of each group.  Financial  effects arising from one
group that affect  Quantum's  consolidated  results of  operations  or financial
condition  could, if significant,  affect the results of operations or financial
condition  of the other group and the market price of the other  group's  stock.
Any net  losses  of  HDDG  or  DSSG,  and  dividends  or  distributions  on,  or
repurchases  of DSSG stock,  or  repurchases  of preferred  stock at a price per
share greater than par value, will reduce the funds of Quantum legally available
for payment of dividends on HDDG stock. As a result,  HDDG's condensed  combined
financial  statements  should be read in conjunction  with  Quantum's  condensed
consolidated  financial  statements  and  DSSG's  condensed  combined  financial
statements.  The condensed  combined balance sheet as of March 31, 1999 has been
derived  from the audited  financial  statements  included  in the  Registration
Statement on Form S-4 (SEC File No.  333-75153)  filed with the  Securities  and
Exchange  Commission,  but does not include all of the information and footnotes
required by generally  accepted  accounting  principles  for complete  financial
statements.

These interim financial  statements reflect all adjustments,  consisting only of
normal recurring adjustments which, in the opinion of management,  are necessary
for a fair  presentation  of the results for the periods  shown.  The results of
operations  for such  periods  are not  necessarily  indicative  of the  results
expected  for the full fiscal  year.  Certain  prior  period  amounts  have been
reclassified to conform to the current period's presentation.

                                                                              41
<PAGE>


2.   Inventories

Inventories consisted of the following:
      (In thousands)
                                               September 26,       March 31,
                                                        1999            1999
                                               -------------      ----------

   Materials and purchased parts                    $  1,834        $  2,204
   Work in process                                    10,455           5,377
   Finished goods                                    138,843         139,943
                                                    --------        --------
                                                    $151,132        $147,524
                                                    ========        ========


3.   Net income (loss) per share

On July 23, 1999,  Quantum's  stockholders  approved the tracking stock proposal
and  Quantum  implemented  the  tracking  stock  proposal  on  August  3,  1999.
Accordingly,  the net loss per share for the periods  presented  below have been
calculated in accordance with the Restated Certificate of Incorporation.

<TABLE>
The following table sets forth the computation of basic and diluted net loss per
share:


<CAPTION>
(In thousands, except per share data)                   Three Months Ended                    Six Months Ended
                                                  September 26,     September 27,       September 26,      September 27,
                                                      1999              1998                1999               1998
                                                    ---------          ---------          ----------          --------
<S>                                                 <C>                <C>                <C>                 <C>
Numerator:
   Numerator for basic and diluted net loss
   per share - loss available to common
   stockholders                                     $ (83,687)         $ (34,878)         $ (126,871)         $(75,432)
                                                    =========          =========          ==========          ========
Denominator:
   Denominator for basic and diluted net
   loss per share - weighted average
   shares                                              82,883             75,763              83,107            77,561
                                                    =========          =========          ==========          ========

Basic and diluted net loss per share                $   (1.01)         $   (0.46)         $    (1.53)         $  (0.97)
                                                    =========          =========          ==========          ========
</TABLE>

The computation of diluted net loss per share for the three and six months ended
September  26,  1999 and  September  27,  1998  excluded  the  effect  of the 7%
convertible  subordinated  notes issued in July 1997, which are convertible into
3,103,076 shares of HDDG common stock, or 10.793 shares per $1,000 note, because
the effect would have been antidilutive.

Options to purchase  15,234,101 and 10,390,490  shares of HDDG common stock were
outstanding at September 26, 1999 and September 27, 1998, respectively. However,
the corresponding  weighted average outstanding options were not included in the
computation  of diluted  net loss per share for the three and six  months  ended
September  26, 1999 and  September  27, 1998  because the effect would have been
antidilutive.

                                                                              42
<PAGE>


4.   Group Equity

In May 1999, the Board of Directors  authorized Quantum to repurchase a combined
total of up to $200 million of Quantum's  common stocks  through the open market
from time to time.  In part,  the intent of the  repurchase  was to minimize the
dilutive  impact of the shares issued to complete the  acquisition  of Meridian.
During the six months ended  September 26, 1999,  DSSG  repurchased  7.2 million
shares of DSSG common stock and acquired 1.9 million shares of HDDG common stock
for $144 million,  and HDDG  repurchased 0.3 million shares of HDDG common stock
for $2 million.

In October  1999,  the Board of  Directors  authorized  an increase in Quantum's
stock repurchase  program,  increasing the previously  authorized amount of $200
million to a total of $600  million.  The  increase  is intended  primarily  for
repurchase of DSSG common stock.


5.  Litigation

On August 7, 1998,  Quantum was named as one of several  defendants  in a patent
infringement  lawsuit filed in the U.S. District Court for the Northern District
of Illinois,  Eastern  Division.  The plaintiff,  Papst  Licensing GmbH, owns at
least 24 U.S.  patents which it asserts that Quantum has infringed.  Quantum has
studied  many of these  patents  before  and,  of the  patents  it has  studied,
believes  that  defenses  of  patent  invalidity  and  non-infringement  can  be
asserted.  However,  Quantum  has not  completed a full study of all the patents
asserted by Papst and there can be no assurance  that Quantum has not  infringed
these or other patents owned by Papst. The final results of this litigation,  as
with any  litigation,  are  uncertain.  In  addition,  the costs of  engaging in
litigation with Papst will be substantial.

Quantum is also subject to other legal  proceedings and claims that arise in the
ordinary course of its business.  While management currently believes the amount
of ultimate liability, if any, with respect to these actions will not materially
affect the financial position,  results of operations,  or liquidity of Quantum,
the ultimate outcome of any litigation is uncertain. Were an unfavorable outcome
to occur, the impact could be material to Quantum.


6.   Special Charge

During the quarter ended  September 26, 1999,  HDDG recorded a special charge of
$59.4  million.  The charge  reflected  HDDG's  strategy to modify the hard disk
drive  business to more closely  align  product  development  and the  business'
operating model with the requirements of the rapidly growing low-cost PC market.
The special charge was  associated  primarily  with the  streamlining  of HDDG's
logistics  model in order to  create  a  faster  and more  flexible  fulfillment
system,  changes in the customer service  strategy and  consolidation of certain
product  development  programs.  Upon  full  implementation  of the  plan,  HDDG
currently  expects to realize  more than $100  million in cost savings per year,
beginning in fiscal year 2001.

The special charge consisted of $26.4 million related to facilities costs, $13.2
million in asset write-offs  related to the streamlining of the global logistics
model and change in customer  service  strategy,  $7.8 million in severance  and
benefits for terminated employees,  and approximately $12 million in other costs
associated with the plan.

                                                                              43
<PAGE>

The  facilities  costs noted above  include  lease  payments on facilities to be
vacated in and around  Milpitas,  California  and  Singapore,  the  write-off of
related leasehold  improvements,  and other maintenance expenses associated with
the vacated  facilities.  HDDG  expects  that the  affected  facilities  will be
vacated within the next 12 months.

In connection with the charge,  HDDG currently expects a workforce  reduction of
approximately  600 employees.  In addition,  approximately 100 open requisitions
and budgeted  positions have been  eliminated.  The reduction in force primarily
affects  employees  at HDDG's  drive  configuration  centers and  warehouses  in
Milpitas, California and Dundalk, Ireland and employees within the desktop drive
business.  Approximately  115 of the 600  employees  had been  terminated  as of
September  26, 1999.  HDDG  anticipates  that the  remaining  employees  will be
terminated by the end of the second quarter of fiscal year 2001.

As of  September  26, 1999,  HDDG had  incurred $1 million in cash  expenditures
associated  with  employee  severance  and  benefits.   HDDG  expects  to  incur
additional cash  expenditures  associated with employee  severance and benefits,
facilities costs and other costs  associated with the plan of approximately  $35
million.

<TABLE>
The following table  summarizes  activity  related to the special charge for the
quarter ended September 26, 1999:

<CAPTION>
(In thousands)                  Severance
                                   And      Facilities              Other
                                 Benefits     Costs    Inventory    Costs     Total
                                --------    --------   --------   --------   --------
<S>                             <C>         <C>        <C>        <C>        <C>
Special charge                  $  7,833    $ 26,359   $ 13,214   $ 12,000   $ 59,406
Cash payments                     (1,021)         --         --         --     (1,021)
                                --------    --------   --------   --------   --------
Balance at September 26, 1999   $  6,812    $ 26,359   $ 13,214   $ 12,000   $ 58,385
                                ========    ========   ========   ========   ========
</TABLE>


7.   Comprehensive Income (Loss)

<TABLE>
Accumulated other  comprehensive  loss included in group equity on the condensed
combined  balance  sheets of the Hard  Disk  Drive  group  consists  of  foreign
currency translation adjustments. Total comprehensive loss for the three and six
months  ended  September  26, 1999 and  September  27, 1998 is  presented in the
following table:
<CAPTION>
(In thousands)                         Three Months Ended              Six Months Ended
                                 September 26,   September 27,   September 26,   September 27,
                                     1999            1998            1999            1998
                                  ---------       ---------       ---------       ---------
<S>                               <C>             <C>             <C>             <C>
Net loss                          $ (83,687)      $ (34,878)      $(126,871)      $ (75,432)
Other comprehensive income --
   foreign currency translation
   adjustments                        1,693           1,188             773             183
                                  ---------       ---------       ---------       ---------

Comprehensive loss                $ (81,994)      $ (33,690)      $(126,098)      $ (75,249)
                                  =========       =========       =========       =========
</TABLE>

                                                                              44
<PAGE>

8.   Business Units

The Hard Disk Drive group currently has two primary product lines,  desktop hard
disk drives and high-end hard disk drives.  HDDG has two separate business units
that support these two product  lines.  In addition,  HDDG  participated  in the
manufacture  of recording  heads through its 49% equity  interest in a recording
heads joint venture with  Matsushita-Kotobuki  Electronics,  Ltd.,  from May 16,
1997 through October 28, 1998 when the joint venture was dissolved.

The desktop business unit designs, develops and markets desktop hard disk drives
designed to meet the storage  requirements  of entry-level  to high-end  desktop
personal computers in home and business environments. The high-end business unit
designs,  develops and markets  high-end  hard disk drives  designed to meet the
storage requirements of network servers, workstations and storage subsystems. In
the future,  the two HDDG  business  units may become a single  business unit as
their markets begin to converge and be reported on a combined basis.

<TABLE>
Results for HDDG's  business units for the three and six months ended  September
26, 1999 and September 27, 1998 are presented in the following table:

<CAPTION>
(In millions)                                                Three Months Ended                   Six Months Ended
                                                      September 26,     September 27,      September 26,      September 27,
                                                           1999              1998               1999               1998
                                                           ----              ----               ----               ----
<S>                                                      <C>                <C>                <C>                <C>
Business unit:
   Desktop
     Revenue                                           $   661            $   749            $ 1,298           $ 1,465
     Unit operating loss                                  (133)               (29)              (194)              (48)

   High-end
     Revenue                                               107                125                222               257
     Unit operating loss                                   (10)               (16)               (26)              (43)

   Recording heads
     Loss from investee                                     --                (17)                --               (41)

</TABLE>


<TABLE>
<CAPTION>
(In millions)                                                Three Months Ended                 Six Months Ended
                                                      September 26,      September 27,   September 26,    September 27,
                                                           1999              1998            1999             1998
                                                           ----              ----            ----             ----
<S>                                                        <C>              <C>              <C>              <C>
Loss reconciliation:
Total unit operating loss                                 $(143)           $ (45)           $(220)           $ (91)
Loss from investee                                           --              (17)              --              (41)

Unallocated amounts:
Interest and other income/(expense)                           1               --                4                2
                                                           -----            -----            -----            -----
   Loss before income taxes                               $(142)           $ (62)           $(216)           $(130)
                                                           =====            =====            =====            =====
</TABLE>
                                                                              45


<PAGE>


Item 2.      Management's  Discussion  and Analysis of Financial  Condition  and
             Results of Operations

This report contains  forward-looking  statements  within the meaning of Section
27A of the Securities Act of 1933, as amended, and Section 21E of the Securities
Exchange Act of 1934, as amended. Forward-looking statements usually contain the
words  "estimate,"   "anticipate,"   "expect,"  or  similar   expressions.   All
forward-looking statements are inherently uncertain as they are based on various
expectations  and assumptions  concerning  future events and they are subject to
numerous known and unknown risks and uncertainties.  These  uncertainties  could
cause actual  results to differ  materially  from those expected for the reasons
set forth under Trends and Uncertainties  relating to the Hard Disk Drive group.
Readers  are  cautioned  not to place undue  reliance  on these  forward-looking
statements, which speak only as of the date hereof.


Business Overview

The Hard Disk Drive group ("HDDG")  designs,  develops and markets a diversified
product portfolio of hard disk drives featuring leading-edge technology.  HDDG's
hard disk drives are designed for the desktop  market and the high-end hard disk
drive market which requires  faster and higher  capacity disk drives--as well as
the  emerging  market  for hard disk  drives  specially  designed  for  consumer
electronics  applications  such as new TV recording  devices.  HDDG has been the
leading  volume  supplier of hard disk drives for the desktop market for each of
the past six years.  According to Dataquest,  HDDG's market share in the desktop
market has grown from 3% in 1990 to an industry leading 22% in 1998.

HDDG  designs  desktop  hard disk  drives to meet the  storage  requirements  of
entry-level to high-performance  desktop PCs in home and business  environments.
HDDG also  designs  high-end  hard disk drives to store data on large  computing
systems such as network  servers.  These high-end hard disk drives are generally
used for:

     o   dedicated sites that store large volumes of data;

     o   network servers such as those used for Internet and intranet  services,
         online transaction processing and enterprise wide applications;

     o   high-speed computers used for specialized  engineering design software;
         and

     o   computer  systems  incorporating  a large  number of  shared  hard disk
         drives.

HDDG recently  introduced  two new hard disk drives  designed for the developing
consumer   electronics   market.   These  hard  disk  drives   utilize   Quantum
QuickView(TM)--HDDG's   hard  disk  drive   technology   designed  for  consumer
electronics.  The use of  hard  disk  drive  technology  makes  it  possible  to
simultaneously   record  and   playback   video   content  and  to  rapidly  and
inexpensively access large amounts of video  content--capabilities  that are not
as well suited to competing  technologies  such as video tape and digital  video
disk.

                                                                              46
<PAGE>


Products

Desktop  products.  HDDG offers two  families of desktop  hard disk  drives--the
Quantum FireballTM and Quantum Fireball Plus. The Quantum Fireball family offers
3.5-inch  hard  disk  drives  for  consumer  and  commercial  PCs,  as  well  as
entry-level  workstations  and network  servers.  Fireball Plus offers  superior
performance for power users. HDDG offers the Shock Protection  SystemTM and Data
Protection  SystemTM with its desktop  products.  These  features  substantially
reduce failure rates and provide  increased  reliability and  performance.  HDDG
also began offering the  second-generation  Shock Protection  System II with its
most recent desktop  products.  This new feature  provides  enhanced  protection
against both operating and non-operating  shock.  Along with providing  enhanced
protection  against  shock during  handling and  integration,  Shock  Protection
System II guards against kicks and jolts while the PC is running to reduce field
failures.

High-end products.  HDDG also offers a broad line of high-end 3.5-inch hard disk
drives--the  Quantum  Atlas and Quantum  Atlas 10K  families.  The Quantum Atlas
family   offers   high-capacity   hard   disk   drives   for  high   performance
storage-intensive   applications   such  as   enterprise   servers  and  storage
subsystems.  HDDG also  offers the Shock  Protection  System  with its  high-end
products.

<TABLE>
The table below sets forth key  performance  characteristics  for HDDG's current
products:

<CAPTION>
                        Capacity      Product      Rotational
                        per Disk      Capacity       Speed
Products                  (GB)         (GB)          (RPM)                                Platform
- --------                  ----         ----          -----                                --------
<S>                        <C>       <C>              <C>       <C>
 Fireball CR                4.3      4.3 to 13.0      5,400     Desktop PCs--Value, with Ultra ATA/66 interface, Shock
                                                                Protection System and Data Protection System

 Fireball CX                6.8      6.4 to 20.4      5,400     Desktop PCs--Value, with Ultra ATA/66 interface, Shock
                                                                Protection System and Data Protection System

 Fireball lct 8             8.7      4.3 to 26.0      5,400     Desktop  PCs--Value,  with Ultra ATA/66  interface,  Shock
                                                                Protection System II and Data Protection System

 Fireball lct 10           10.0      5.0 to 30.0      5,400     Desktop PCs--Value, with Ultra ATA/66 interface, Shock
                                                                Protection System II and Data Protection System

 Fireball Plus KA           4.5      6.4 to 18.2      7,200     Desktop PCs--Performance, with Ultra ATA/66 interface,
                                                                Shock Protection System and Data Protection System

 Fireball Plus KX           6.8      6.8 to 27.3      7,200     Desktop PCs--Performance, with Ultra ATA/66 interface,
                                                                Shock Protection System and Data Protection System

 Atlas IV                   4.5      9.1 to 36.4      7,200     Servers, Workstations and Storage Subsystems, with Ultra 160/m
                                                                SCSI interface, Shock Protection System

 Atlas 10K                  3.0      9.1 to 36.4     10,000     Enterprise Servers and Storage Subsystems, with Ultra 160/m
                                                                SCSI interface or Fibre Channel optional interface, 3-inch
                                                                media, Shock Protection System
</TABLE>


                                                                              47
<PAGE>

Results of Operations

Revenue.  Revenue in the three and six months ended  September 26, 1999 was $768
million and $1.521  billion,  respectively,  compared to $874 million and $1.722
billion,  respectively,  for the corresponding  periods in fiscal year 1999. The
decrease  in revenue  reflected  lower  revenue  from sales of both  desktop and
high-end hard disk drives.

     o   Desktop  hard disk  drive  revenue  in the three and six  months  ended
         September 26, 1999 was $661 million and $1.298  billion,  respectively,
         compared to $749  million  and $1.465  billion,  respectively,  for the
         corresponding  periods in fiscal year 1999.  While shipments of desktop
         hard disk  drives  increased  from the first six months of fiscal  year
         1999, intense  competitive  pricing pressures resulted in significantly
         lower average unit prices and reduced desktop hard disk drive revenue.

     o   High-end  hard disk drive  revenue  for the three and six months  ended
         September  26, 1999 was $107  million and $222  million,  respectively,
         compared  to $125  million  and  $257  million,  respectively,  for the
         corresponding  periods in fiscal year 1999.  Shipments of high-end hard
         disk drives increased slightly from the first six months of fiscal year
         1999 as HDDG  completed a transition  to new high-end  products,  while
         revenue declined reflecting reduced average unit prices.


Sales to the top five customers in the three and six months ended  September 26,
1999 represented 51% and 49% of revenue, respectively,  compared to 45% and 47%,
respectively,  in the  corresponding  periods in fiscal year 1999. These amounts
reflected a retroactive  combination of sales to Compaq and Digital Equipment as
a result of their merger in June 1998 as well as a  retroactive  combination  of
sales to Ingram Micro and Electronic  Resources as a result of the completion of
their merger in July 1999. Sales to Hewlett-Packard  were 10% and 12% of revenue
in the three and six months ended September 26, 1999, respectively,  compared to
16% of revenue for the corresponding  periods in fiscal year 1999. Sales to Dell
Computer  were 10% of revenue in the three months ended  September  26, 1999 and
were less than 10% of revenue in the six months ended September 26, 1999 and the
corresponding  periods in fiscal  year 1999.  Sales to Ingram  Micro were 13% of
revenue for the three and six months ended  September  26,  1999,  and were less
than 10% of revenue for the corresponding periods in fiscal year 1999, including
sales to Electronic Resources.


Sales to computer  equipment  manufacturers  and distribution  channel customers
were 57% and 43% of  revenue  in the three  months  ended  September  26,  1999,
respectively,  compared  to 64% and 36% of  revenue  in the three  months  ended
September  27, 1998.  For the six months  ended  September  26,  1999,  computer
equipment  manufacturers  and  distribution  channel  sales  were 56% and 44% of
revenue,  compared  to 62% and 38% for the  corresponding  period of fiscal year
1999.

Gross Margin Rate. The gross margin rate in the three months ended September 26,
1999 decreased  to -4.5% from 6.9% in the three months ended September 27, 1998.
The gross  margin  rate for the first six months of fiscal year 2000 was  -0.4%,
compared  to 6.6% in the  corresponding  period in fiscal  year 1999.  The gross
margin rate in the three and six month periods of fiscal year 2000 reflected the
impact of a $57.1 million  special charge as discussed  below.  The gross margin

                                                                              48

<PAGE>

rate  excluding  the  impact  of the  charge  was 2.9% and 3.3% in the three and
six-month periods ended September 26, 1999.


     o   The  desktop  gross  margin  rate for the  three and six  months  ended
         September 26, 1999 was -8.6% and -3.7%, respectively,  compared to 5.2%
         and 6.0% for the corresponding  periods in fiscal year 1999.  Excluding
         the desktop  portion of the special charge of $51.4 million,  the gross
         margin  rate was -0.8%  and 0.3% for the  three  and six month  periods
         ended  September 26, 1999.  Excluding the impact of the special charge,
         the decrease in the gross margin rate reflected the intense competitive
         pricing  pressures in the desktop  market.  HDDG expects to  experience
         continued gross margin pressure with respect to desktop hard disk drive
         products through at least the third quarter of fiscal year 2000.

     o   The  high-end  gross  margin  rate for the three and six  months  ended
         September 26, 1999 was 20.6% and 18.5%, respectively, compared to 16.7%
         and 9.8% for the corresponding  periods in year fiscal 1999.  Excluding
         the high-end  portion of the special charge of $5.7 million,  the gross
         margin  rate was 25.9% and  21.1% in the  three and  six-month  periods
         ended  September 26, 1999. The increase in gross margins  reflected the
         transition to new, higher margin products.


Research and  Development  Expenses.  Research and  development  expenses in the
three and six months  ended  September  26, 1999,  were $62 million,  or 8.1% of
revenue,  and $125 million,  or 8.2% of revenue,  respectively,  compared to $61
million, or 6.9% of revenue, and $123 million, or 7.1% of revenue, respectively,
in the corresponding periods in fiscal year 1999.


Sales and Marketing Expenses.  Sales and marketing expenses in the three and six
months ended September 26, 1999, were $29 million,  or 3.8% of revenue,  and $57
million, or 3.7% of revenue,  respectively,  compared to $31 million, or 3.5% of
revenue, and $56 million, or 3.3% of revenue, respectively, in the corresponding
periods of fiscal year 1999.


General and Administrative Expenses.  General and administrative expenses in the
three and six months  ended  September  26, 1999,  were $15 million,  or 2.0% of
revenue,  and $30  million,  or 2% of  revenue,  respectively,  compared  to $14
million, or 1.6% of revenue, and $25 million, or 1.5% of revenue,  respectively,
in the  corresponding  periods of fiscal year 1999.  The increase in general and
administrative expenses for the six month period reflected a deferral of certain
programs in the first  quarter of fiscal year 1999 and  implementation  of a new
quality program reflected in the first quarter of fiscal year 2000.

Special Charge.  During the three months ended September 26, 1999, HDDG recorded
a special charge of $59.4 million, of which $57.1 million is included in cost of
sales and $2.3 million is included in operating  expenses.  The charge reflected
HDDG's  strategy to modify the hard disk drive  business to more  closely  align
product development and the business's  operating model with the requirements of
the rapidly  growing  low-cost  PC market.  The  special  charge was  associated
primarily with the  streamlining of HDDG's  logistics model in order to create a
faster and more flexible  fulfillment  system,  changes in the customer  service
strategy and consolidation of certain

                                                                              49
<PAGE>

product  development  programs.  Upon  full  implementation  of the  plan,  HDDG
currently  expects to realize  more than $100  million in cost savings per year,
beginning in fiscal year 2001.

The special charge consisted of $26.4 million related to facilities costs, $13.2
million in asset write-offs  related to the streamlining of the global logistics
model and change in customer  service  strategy,  $7.8 million in severance  and
benefits for terminated employees,  and approximately $12 million in other costs
associated with the plan.


Interest and Other Income/Expense.  Net interest and other income and expense in
the three and six months  ended  September  26,  1999 was $1.0  million and $4.6
million income, respectively,  compared to $70 thousand and $2.2 million income,
respectively, in the corresponding periods of fiscal year 1999.


Loss from Investee.  The loss from investee reflected HDDG's 49% equity share in
the   operating   losses   of   its   recording   heads   joint   venture   with
Matsushita-Kotobuki,  which was  dissolved  in the third  quarter of fiscal year
1999. HDDG's share of the loss in the joint venture for the three and six months
ended September 27, 1998 was $17.1 million and $41.4 million, respectively.


Income  Taxes.  HDDG  recorded  an  effective  tax benefit for the three and six
months ended September 26, 1999 of 41% as compared to 44% and 42%, respectively,
for the  corresponding  periods in fiscal year 1999.  The decrease in the fiscal
year 2000 effective tax benefit rate reflects a decreased  percentage of foreign
earnings taxed at less than the U.S. rate.


Liquidity and Capital Resources

Operating  Activities.  HDDG used cash of $77 million in operating activities in
the six months ended  September 26, 1999. HDDG generated cash from operations of
$78  million  in the  six  months  ended  September  27,  1998.  The use of cash
primarily  reflected  higher net  losses and  reduced  collections  of  accounts
receivable compared to the prior year period.

Investing  Activities.  Investments  in the six months ended  September 26, 1999
were $30 million, which consisted of investments in property and equipment.  Net
cash provided by investing  activities during the six months ended September 27,
1998 totaled $1 million.

Financing Activities.  At September 26, 1999, and March 31, 1999, Quantum's debt
allocated  to HDDG  was  $112  million  and  $115  million,  respectively.  Debt
allocated  to HDDG  bears  interest  at a rate  equal  to the  weighted  average
interest  rate of Quantum's  total debt,  calculated  on a quarterly  basis.  At
September  26,  1999,  Quantum had a total debt of $337  million with an average
interest rate of 8.5%. Net cash provided by financing  activities during the six
months ended September 26, 1999 was $4 million.

In May 1999, the Board of Directors  authorized Quantum to repurchase a combined
total of up to $200 million of Quantum's  common stocks  through the open market
from time to time.  In part,  the intent of the  repurchase  was to minimize the
dilutive  impact of the shares issued to complete the

                                                                              50
<PAGE>

acquisition of Meridian.  During the six months ended  September 26, 1999,  DSSG
repurchased  7.2 million  shares of DSSG common  stock and  acquired 1.9 million
shares of HDDG common stock for $144 million,  and HDDG  repurchased 0.3 million
shares of HDDG common stock for $2 million.

In October  1999,  the Board of  Directors  authorized  an increase in Quantum's
stock repurchase  program,  increasing the previously  authorized amount of $200
million to a total of $600 million.  The increased  authorization allows Quantum
to  repurchase  its common  stocks  through  the open  market or  through  other
mechanisms.  The increase is intended  primarily  for  repurchase of DSSG common
stock.

In December 1998, ATL entered into a senior credit  facility that provides a $35
million  revolving credit line to ATL. The revolving credit line is co-terminous
with Quantum's  $500 million  revolving  credit line,  expiring in June 2000. As
amended,  at the option of ATL,  borrowings under the revolving credit line bear
interest at either  London  interbank  offered rate plus a margin  determined by
Quantum's total funded debt ratio, or at a base rate, with option periods of two
weeks to six months.  At September 26, 1999, $10 million was outstanding on this
revolving credit line.

In June 1997,  Quantum  entered into an unsecured  senior  credit  facility that
provides a $500  million  revolving  credit  line and  expires in June 2000.  At
Quantum's  option,  borrowings  under the revolving credit line bear interest at
either  London  interbank  offered  rate plus a margin  determined  by our total
funded debt ratio,  or at a base rate, with option periods of one to six months.
At September 26, 1999, there was no outstanding balance drawn on this line.

HDDG expects to spend  approximately $60 million in fiscal year 2000 for capital
equipment and leasehold  improvements.  These capital  expenditures will support
the development and introduction of new disk drive products.

HDDG expects its cash flow from  operations,  together with available  financing
sources,  will be  sufficient  to meet all currently  planned  expenditures  and
sustain  operations  for the next 12 months.  However,  this belief assumes that
operating results and cash flow from operations will meet HDDG's expectations.

In fiscal year 1999,  Quantum entered into a strategic alliance with TiVo, Inc.,
to supply  hard disk  drives  utilizing  Quantum's  QuickView(TM) technology for
integration  into TiVo's  Personal  Video  Recorder.  As part of the  agreement,
Quantum  received  warrants to purchase  800,000 shares of TiVo common stock. On
September 30, 1999,  subsequent to the end of Quantum's  fiscal second  quarter,
Quantum  exercised  its  warrants  immediately  prior to TiVo's  initial  public
offering.  Quantum  is not  allowed  to sell TiVo  common  stock for a six month
period following the initial public offering and will account for its investment
as an available for sale security. As a result, any unrealized gain or loss, net
of tax, will be included as part of accumulated other comprehensive  income/loss
and will be combined with group equity on HDDG's combined balance sheet.


Trends and Uncertainties Relating to the Hard Disk Drive Group

Holders  of HDDG  stock  remain  stockholders  of one  company  and,  therefore,
financial effects on DSSG could adversely affect HDDG

Holders of HDDG stock and DSSG stock are stockholders of a single company.  HDDG
and DSSG  are not  separate  legal  entities.  As a  result,  stockholders  will
continue to be subject to all of the risks

                                                                              51
<PAGE>

of an investment in Quantum and all of its businesses,  assets and  liabilities.
The issuance of the HDDG stock and the DSSG stock and the  allocation  of assets
and liabilities and stockholders' equity between HDDG and DSSG did not result in
a distribution  or spin-off to stockholders of any Quantum assets or liabilities
and did not affect ownership of our assets or responsibility for our liabilities
or those of our  subsidiaries.  The assets we  attribute  to one group  could be
subject to the liabilities of the other group,  whether such  liabilities  arise
from lawsuits,  contracts or indebtedness  that we attribute to the other group.
If we are  unable  to  satisfy  one  group's  liabilities  out of the  assets we
attribute to it, we may be required to satisfy those  liabilities with assets we
attribute to the other group.

Financial  effects  from one group  that  affect  our  consolidated  results  of
operations or financial  condition could, if significant,  affect the results of
operations or financial condition of the other group and the market price of the
tracking  stock relating to the other group.  In addition,  net losses of either
group and dividends and  distributions  on, or  repurchases  of, either class of
tracking stock or  repurchases  of preferred  stock at a price per share greater
than par value will reduce the funds we can pay on each class of tracking  stock
under  Delaware  law.  For  these  reasons,  you  should  read our  consolidated
financial information with the financial information we provide for each group.


HDDG's operating  results depend on new product  introductions  which may not be
successful

To compete  effectively,  HDDG must  frequently  introduce new hard disk drives.
HDDG cannot assure you that:

     o   it will  successfully  or timely  develop  or market  any new hard disk
         drives in  response  to  technological  changes  or  evolving  industry
         standards;

     o   it will not experience technical or other difficulties that could delay
         or prevent the successful development, introduction or marketing of new
         hard disk drives;

     o   it  will  successfully  qualify  new  hard  disk  drives,  particularly
         high-end  disk  drives,  with  HDDG's  customers  by  meeting  customer
         performance  and  quality  specifications.   A  successful  and  timely
         customer  qualification  must occur before  customers  will place large
         product orders;

     o   it will quickly achieve high volume production of new hard disk drives;
         or

     o   its new products will achieve market acceptance.

These risks are  magnified  because HDDG expects  technological  changes,  short
product  life cycles and intense  competitive  pressures  to result in declining
sales and gross margins on its current generation products.

                                                                              52
<PAGE>


HDDG's  quarterly  operating  results  could  fluctuate  significantly  and past
quarterly operating results should not be used to predict future performance

HDDG's quarterly operating results have fluctuated significantly in the past and
may  fluctuate  significantly  in the  future.  As a result,  you should not use
HDDG's past quarterly operating results to predict future performance. Quarterly
operating results could be adversely affected by:

     o   the ability of Matsushita-Kotobuki,  HDDG's exclusive manufacturer,  to
         quickly achieve high volume production of HDDG's hard disk drives;

     o   customers canceling, deferring or rescheduling significant orders;

     o   returns by customers of unsold hard disk drives for credit;

     o   decline in PC demand; or

     o   failure to  complete  shipments  in the last month of a quarter  during
         which a substantial portion of HDDG's products are typically shipped.


HDDG's prices and margins are subject to declines due to unpredictable  end-user
demand and oversupply of hard disk drives

End-user  demand for the computer  systems which contain HDDG's hard disk drives
has  historically  been subject to rapid and  unpredictable  fluctuations.  As a
result,  the hard  disk  drive  market  tends to  experience  periods  of excess
capacity  which  typically lead to intense price  competition.  If intense price
competition  occurs,  HDDG may be forced to lower  prices  sooner  and more than
expected and transition to new products  sooner than expected.  For example,  in
fiscal year 1999 and the second half of fiscal year 1998,  as a result of excess
inventory  in the  desktop  hard  disk  drive  market,  aggressive  pricing  and
corresponding  margin reductions  materially adversely impacted HDDG's operating
results.  HDDG  experienced  similar  conditions in the high-end hard disk drive
market during most of fiscal years 1998 and 1999.


Growth of the lower  priced PC markets is putting  downward  pressure  on HDDG's
desktop hard disk drive prices and margins

The recent  growth of the lower priced PC market has led to a shift toward lower
priced  desktop hard disk drives,  and to  significantly  reduced gross margins.
HDDG  expects the trend  toward  lower prices and margins on hard disk drives to
continue.  If HDDG is unable to lower the cost of its  desktop  hard disk drives
accordingly, gross margins will continue to decrease.


Intense  competition  in the desktop and  high-end  hard disk drive market could
adversely impact HDDG's operating results


In the desktop hard disk drive market,  HDDG's primary  competitors  are Fujitsu
Limited,  IBM, Maxtor  Corporation,  Samsung  Electronics Co., Ltd., Seagate and
Western Digital Corporation. The

                                                                              53
<PAGE>

desktop hard disk drive market is  characterized  by more  competitiveness  than
that seen in the  computer  industry in general.  HDDG's  operating  results and
competitive  position  could  be  negatively  impacted  by the  introduction  of
competitive  products with higher  performance,  higher reliability and/or lower
cost than HDDG's products.  For example,  in the first six months of fiscal year
2000, certain competitors reduced prices for their products significantly.  As a
result, HDDG's operating results were materially adversely impacted.


In the high-end hard disk drive market,  HDDG's primary competitors are Fujitsu,
Hitachi, IBM, Seagate and Western Digital.  Currently,  Seagate and IBM have the
largest  market share for  high-end  hard disk drives.  Intense  technology  and
pricing  competition  has led to  losses  on HDDG's  high-end  hard  disk  drive
products over the past 10 quarters.


A majority of sales come from a few customers  that have no minimum or long-term
purchase commitments

HDDG's sales are concentrated with a few customers.  Customers are not obligated
to purchase any minimum  product volume and HDDG's  customer  relationships  are
terminable at will. The loss of, or a significant  change in demand from, one or
more key HDDG customers could have a material adverse impact on HDDG's operating
results.


Because HDDG depends on Matsushita-Kotobuki for the manufacture of all hard disk
drives,   adverse   material   developments   in  this  critical   manufacturing
relationship would adversely impact HDDG's operating results

HDDG's relationship with  Matsushita-Kotobuki is critical to the Hard Disk Drive
group's operating results and overall business performance. HDDG's dependence on
Matsushita-Kotobuki includes the following principal risks:

     o   Quality and  Delivery.  HDDG relies on  Matsushita-Kotobuki  to quickly
         achieve  volume  production  of new hard disk  drives at a  competitive
         cost,  to meet HDDG's  stringent  quality  requirements  and to respond
         quickly   to   changing   product   delivery   schedules.   Failure  of
         Matsushita-Kotobuki to satisfy these requirements could have a material
         adverse impact on HDDG's operating results.

     o   Purchase Forecasts.  Matsushita-Kotobuki's production schedule is based
         on HDDG's forecasts of its purchase requirements,  and HDDG has limited
         rights to modify  short-term  purchase  orders.  The failure of HDDG to
         accurately   forecast   its   requirements   or   successfully   adjust
         Matsushita-Kotobuki's  production  schedule  could  lead  to  inventory
         shortages or surpluses.

     o   Pricing. HDDG negotiates pricing arrangements with  Matsushita-Kotobuki
         on  a  quarterly  basis.  Any  failure  to  reach  competitive  pricing
         arrangements  would have a material  adverse impact on HDDG's operating
         results.

                                                                              54

<PAGE>


     o   Capital   Commitment.   HDDG's   future   growth  will   require   that
         Matsushita-Kotobuki  continue to devote substantial financial resources
         to property,  plant and equipment to support the  manufacture of HDDG's
         products.

     o   Manufacturing  Capacity. If  Matsushita-Kotobuki is unable or unwilling
         to meet HDDG's manufacturing requirements, an alternative manufacturing
         source may not be available in the near-term.


Matsushita-Kotobuki  depends on a limited  number of component and  sub-assembly
suppliers  and  component  shortages  and quality  problems or delays from these
suppliers could result in increased costs and reduced sales

Matsushita-Kotobuki  depends  on a limited  number of  qualified  suppliers  for
components and  sub-assemblies,  including recording heads, media and integrated
circuits,  all of which are  essential  to the  manufacture  of HDDG's hard disk
drives.  Matsushita-Kotobuki  may  qualify  only a  single  source  for  certain
components  and  sub-assemblies,   which  can  magnify  the  risk  of  component
shortages. Component shortages have constrained HDDG's sales growth in the past,
and HDDG believes that it will periodically  experience component shortages.  If
Matsushita-Kotobuki  experiences quality problems with its component  suppliers,
HDDG's hard disk drive shipments could be  significantly  delayed or costs could
be significantly increased.


Unexpected  warranty  costs could have a material  adverse  impact on  operating
results

HDDG  warrants its products  against  defects for a period of one to five years.
Actual warranty costs could have a material  adverse impact on HDDG's  operating
results if the actual unit  failure  rate or unit repair  costs are greater than
those for which HDDG established a warranty accrual.


Third party  infringement  claims  could  result in  substantial  liability  and
significant costs

From time to time,  third parties allege HDDG's  infringement  of and need for a
license under their patented or other proprietary  technology.  For example,  in
August  1998  Quantum  was  named  as  one of  several  defendants  in a  patent
infringement lawsuit. The plaintiff, Papst Licensing GmbH, owns at least 24 U.S.
patents,  which it asserts that HDDG has  infringed.  Adverse  resolution of the
Papst litigation or any other third party  infringement claim could subject HDDG
to  substantial  liabilities  and require it to refrain from  manufacturing  and
selling certain products. HDDG cannot assure you that licenses to any technology
owned by Papst or any other third party alleging  infringement could be obtained
on  commercially  reasonable  terms,  or at  all.  In  addition,  the  costs  of
litigation could be substantial, regardless of the outcome.


HDDG's foreign  manufacturing  costs could be adversely impacted by fluctuations
in currency exchange rates


Matsushita-Kotobuki  generally  purchases  manufacturing  components  at  prices
denominated in U.S. dollars. However, significant increases in currency exchange
rates against the U.S. Dollar could

                                                                              55
<PAGE>

increase  Matsushita-Kotobuki's  manufacturing  costs and could result in higher
product prices and/or declining margins for HDDG's products.

                                                                              56

<PAGE>


                               QUANTUM CORPORATION

                           PART II - OTHER INFORMATION


Item 1.       Legal proceedings

Refer to Note 6 of the Notes to Condensed  Consolidated Financial Statements and
Note 5 of the Notes to Condensed Combined Financial  Statements of the Hard Disk
Drive group.


Item 2.       Changes in securities - Not Applicable


Item 3.       Defaults upon senior securities - Not Applicable


Item 4.       Submission of matters to a vote of security holders

A Special Meeting of Stockholders was held on July 23, 1999 to consider and vote
on proposals to adopt an Amended and Restated  Certificate of  Incorporation  to
create two  separate  classes of common  stock and an  Amendment  to the Quantum
Corporation  Employee  Stock  Purchase  Plan to  increase  the  number of shares
reserved for issuance thereunder.

The stockholders  approved the adoption of the Amended and Restated  Certificate
of  Incorporation  and the creation of two separate classes of common stock. The
number of votes  "For"  were  99,276,111;  the  number of votes  "Against"  were
18,564,889; and the number of votes "Withheld" were 597,461.

The stockholders also approved the amendment to the Quantum Corporation Employee
Stock  Purchase  Plan to increase  the number of shares  reserved  for  issuance
thereunder.  The  number of votes  "For"  were  97,705,836;  the number of votes
"Against" were 20,224,106; and the number of votes "Abstain" were 508,519.

The 1999  Annual  Meeting  of  Stockholders  was also  held on July 23,  1999 to
consider and vote on proposals to elect management's candidates for the Board of
Directors  and to appoint  Ernst & Young LLP to serve as  Quantum's  independent
auditors for the fiscal year ending March 31, 2000.

                                                                              57

<PAGE>

The  stockholders  elected  each of  management's  candidates  for the  Board of
Directors. The votes were as follows:

                                            For             Withheld Authority
                                            ---             ------------------
        Stephen M. Berkley              146,151,721             1,350,124
        David A. Brown                  146,151,721             1,350,124
        Michael A. Brown                146,147,276             1,354,569
        Robert J. Casale                146,151,721             1,350,124
        Edward M. Esber, Jr.            146,151,721             1,350,124
        Steven C. Wheelwright           146,151,721             1,350,124

The stockholders  also approved the appointment of Ernst & Young LLP to serve as
Quantum's  independent  auditors for the fiscal year ending March 31, 2000.  The
number of votes  "For"  were  147,182,511;  the number of votes  "Against"  were
172,989; the number of votes "Abstain" were 146,345.


Item 5.       Other information - Not Applicable


Item 6.       Exhibits and reports on Form 8-K.

              (a)    Exhibits. The  exhibits  listed  on  the
                               accompanying index to exhibits
                               immediately following the signature
                               page are filed as part of this report.

              (b)    Reports on Form 8-K.

                               None

                                                                              58
<PAGE>


                                    SIGNATURE



Pursuant  to the  requirements  of the  Securities  Exchange  Act of  1934,  the
Registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                                              QUANTUM CORPORATION
                                                 (Registrant)




Date:  November 2, 1999                 By:    /s/ Richard L. Clemmer
                                               ----------------------
                                               Richard L. Clemmer
                                               Executive Vice President, Finance
                                                  and Chief Financial Officer



                                                                              59
<PAGE>


                               QUANTUM CORPORATION

                                INDEX TO EXHIBITS

Exhibit
Number           Exhibit

10.1             THIRD  AMENDMENT  TO CREDIT  AGREEMENT,  dated August 31, 1999,
                 among  Quantum  Corporation,   certain  financial  institutions
                 (collectively,  the  "Banks"),  and CANADIAN  IMPERIAL  BANK OF
                 COMMERCE, as administrative agent for the Banks.

27.1             Financial Data Schedule



Footnotes to
Exhibits            Footnote
None




                                                               EXECUTION VERSION


                       THIRD AMENDMENT TO CREDIT AGREEMENT

         THIS THIRD AMENDMENT TO CREDIT AGREEMENT (this  "Amendment"),  dated as
of August 31, 1999, is entered into by and among:

                  (1) QUANTUM CORPORATION,  a Delaware corporation ("Borrower");

                  (2) Each of the financial institutions listed in Schedule I to
         the Credit Agreement referred to in Recital A below (collectively,  the
         "Banks") that execute this Amendment; and

                  (3)  CANADIAN  IMPERIAL  BANK OF COMMERCE,  as  administrative
         agent for the Banks (in such capacity, "Administrative Agent").


                                    RECITALS

         A. Each of (i) Borrower,  (ii) the Banks, (iii)  Administrative  Agent,
(iv) ABN AMRO Bank, N.V ("ABN"),  and CIBC Inc., as co-arrangers  for the Banks,
(v) ABN,  as  syndication  agent  for the  Banks,  (vi)  Bank of  America,  N.A.
(formerly known as Bank of America National Trust and Savings  Association),  as
documentation agent for the Banks, and (vii) BankBoston,  N.A., The Bank of Nova
Scotia,  Fleet  National  Bank and The  Industrial  Bank of Japan,  Limited,  as
co-agents for the Banks,  are parties to a Credit  Agreement dated as of June 6,
1997, as amended by that certain First Amendment to Credit Agreement dated as of
June 26, 1998 and as further amended by that certain Second  Amendment to Credit
Agreement dated as of December 18, 1998 (as amended, the "Credit Agreement").

         B. Borrower has requested  Administrative  Agent and the Banks to amend
the Credit Agreement in certain respects.

         C. The Banks  executing  this  Amendment and  Administrative  Agent are
willing  so to amend the  Credit  Agreement  upon the terms and  subject  to the
conditions set forth below.


                                    AGREEMENT

         NOW,  THEREFORE,  in  consideration of the above recitals and for other
good and  valuable  consideration,  the receipt and adequacy of which are hereby
acknowledged, Borrower and the Banks executing this Amendment and Administrative
Agent hereby agree as follows:

         1. Definitions, Interpretation. All capitalized terms defined above and
elsewhere in this Amendment shall be used herein as so defined. Unless otherwise
defined  herein,  all  other  capitalized  terms  used  herein  shall  have  the
respective meanings given to those terms in the Credit Agreement,  as amended by
this Amendment.  The rules of construction  set forth in Section I of the Credit
Agreement  shall,  to the  extent  not  inconsistent  with  the  terms  of  this
Amendment, apply to this Amendment and are hereby incorporated by reference.

                                        1

<PAGE>

         2. Amendment to Credit  Agreement.  Subject to the  satisfaction of the
conditions  set forth in Paragraph 4 below,  Subparagraph  5.02(f) of the Credit
Agreement  is hereby  amended by  changing  clause  (iv)  thereof to read in its
entirety as follows:

                  (iv) Borrower may purchase Equity Securities pursuant to stock
         repurchase  programs,  provided that the aggregate  payments under such
         programs  do not  exceed  (A) during  fiscal  year  1999,  twenty-three
         percent  (23%) of  Tangible  Net Worth as  determined  as of the fiscal
         quarter  ending March 31,  1998,  (B) during  fiscal year 2000,  twenty
         percent  (20%) of  Tangible  Net Worth as  determined  as of the fiscal
         quarter  ending June 27,  1999,  and (C) during all other  fiscal years
         until the  Maturity  Date,  ten percent  (10%) of Tangible Net Worth as
         determined as of the fiscal quarter  immediately  preceding the date of
         determination;

         3.  Representations  and  Warranties.  Borrower  hereby  represents and
warrants to  Administrative  Agent and the Banks that the following are true and
correct  on the date of this  Amendment  and that,  after  giving  effect to the
amendment set forth in Paragraph 2 above, the following will be true and correct
on the Effective Date (as defined below):

                   (a) The  representations  and  warranties of Borrower and its
          Subsidiaries  set forth in Paragraph 4.01 of the Credit  Agreement and
          in the other  Credit  Documents  are true and correct in all  material
          respects  as if made on such  date  (except  for  representations  and
          warranties  expressly made as of a specified date, which shall be true
          and correct in all material respects as of such date);

                   (b) No  Default  or  Event of  Default  has  occurred  and is
          continuing; and

                   (c) Each of the Credit Documents is in full force and effect.

(Without limiting the scope of the term "Credit  Documents,"  Borrower expressly
acknowledges  in making the  representations  and  warranties  set forth in this
Paragraph  3 that,  on and  after  the date  hereof,  such  term  includes  this
Amendment.)

         4. Effective  Date.  The amendment  effected by Paragraph 2 above shall
become effective on August 31, 1999 (the "Effective  Date"),  subject to receipt
by  Administrative  Agent and the Banks on or prior to the Effective Date of the
following,  each in form and substance satisfactory to Administrative Agent, the
Banks executing this Amendment and their respective counsel:

                   (a) This  Amendment  duly executed by Borrower,  the Majority
          Banks and Administrative Agent;

                   (b) A Certificate of the Secretary or an Assistant  Secretary
          of  Borrower,  dated  the  Effective  Date,  certifying  that  (i) the
          Certificate  of  Incorporation  and  Bylaws of  Borrower,  in the form
          delivered to  Administrative  Agent on the Closing  Date,  are in full
          force and effect and have not been amended,  supplemented,  revoked or
          repealed since such date, (ii) that the resolution of Borrower, in the
          form delivered to Administrative Agent on the Closing Date, is in full
          force and effect and has not been  amended,

                                       2
<PAGE>

          supplemented,  revoked or  repealed  since  such  date,  and (iii) the
          incumbency,  signatures  and  authority  of the  officers  of Borrower
          authorized to execute, deliver and perform the Credit Agreement,  this
          Amendment,  the  other  Credit  Documents  and  all  other  documents,
          instruments or agreements  relating thereto executed or to be executed
          by Borrower and  indicating  each such  officer  which is an Executive
          Officer or Authorized Financial Officer; and

                   (d) Such other evidence as  Administrative  Agent or any Bank
          executing  this  Amendment  may  reasonably  request to establish  the
          accuracy and  completeness of the  representations  and warranties and
          the  compliance  with  the  terms  and  conditions  contained  in this
          Amendment and the other Credit Documents.

          5. Effect of this  Amendment. On and after the  Effective  Date,  each
reference in the Credit  Agreement and the other Credit  Documents to the Credit
Agreement  shall  mean  the  Credit  Agreement  as  amended  hereby.  Except  as
specifically  amended  above,  (a) the  Credit  Agreement  and the other  Credit
Documents  shall  remain in full force and effect  and are hereby  ratified  and
confirmed and (b) the execution,  delivery and  effectiveness  of this Amendment
shall  not,  except as  expressly  provided  herein,  operate as a waiver of any
right,  power, or remedy of the Banks or Administrative  Agent, nor constitute a
waiver of any provision of the Credit Agreement or any other Credit Document.

          6.      Miscellaneous.

                  (a) Counterparts. This Amendment may be executed in any number
         of identical  counterparts,  any set of which signed by all the parties
         hereto shall be deemed to constitute a complete,  executed original for
         all purposes.

                  (b) Headings.  Headings in this Amendment are for  convenience
         of reference only and are not part of the substance hereof.

                  (c)  Governing  Law. This  Amendment  shall be governed by and
         construed  in  accordance  with  the laws of the  State  of  California
         without reference to conflicts of law rules.

                                       3


<PAGE>


         IN WITNESS WHEREOF, Borrower,  Administrative Agent, Syndication Agent,
Documentation  Agent and the Banks  executing  this  Amendment  have caused this
Amendment to be executed as of the day and year first above written.

                                           QUANTUM CORPORATION, as Borrower

                                           By: /s/ Andrew Kryder
                                               ---------------------------------
                                               Name:      Andrew Kryder
                                               ---------------------------------
                                               Title:     Vice President,
                                                          Finance &
                                                          General Counsel
                                               ---------------------------------


                                           CANADIAN IMPERIAL BANK OF COMMERCE,
                                           as Administrative Agent

                                           By: /s/ Paul J. Chakmak
                                               ---------------------------------
                                               Name:      Paul J. Chakmak
                                               ---------------------------------
                                               Title:     Managing Director,
                                                          CIBC World Markets
                                                          Corp., AS AGENT
                                               ---------------------------------


                                           ABN AMRO BANK N.V., as a Bank

                                           By: /s/ Nanci H. Meyer
                                               ---------------------------------
                                               Name:      Nanci H. Meyer
                                               ---------------------------------
                                               Title:     Vice President
                                               ---------------------------------

                                           By: /s/ Robert N. Hartinger
                                               ---------------------------------
                                               Name:      Robert N. Hartinger
                                               ---------------------------------
                                               Title:     Senior Vice President
                                               ---------------------------------


                                           BANKBOSTON, N.A., as a Bank

                                           By: /s/ Lee A. Merkle-Raymond
                                               ---------------------------------
                                               Name:      Lee A. Merkle-Raymond
                                               ---------------------------------
                                               Title:     Director
                                               ---------------------------------


                                           BANK OF AMERICA, N.A., as a Bank

                                           By: /s/ Kevin Mc Mahon
                                               ---------------------------------
                                               Name:      Kevin Mc Mahon
                                               ---------------------------------
                                               Title:     Managing Director
                                               ---------------------------------

                                       4
<PAGE>


                                           BANQUE NATIONALE DE PARIS, as a Bank

                                           By: /s/ Michael D. McCorriston
                                               ---------------------------------
                                               Name:      Michael D. McCorriston
                                               ---------------------------------
                                               Title:     Vice President
                                               ---------------------------------

                                           By: /s/ Jennifer Y. Cho
                                               ---------------------------------
                                               Name:      Jennifer Y. Cho
                                               ---------------------------------
                                               Title:     Vice President
                                               ---------------------------------


                                           CIBC INC., as a Bank

                                           By: /s/ Paul J. Chakmak
                                               ---------------------------------
                                               Name:      Paul J. Chakmak
                                               ---------------------------------
                                               Title:     Managing Director,
                                                          CIBC World Markets
                                                          Corp., AS AGENT
                                               ---------------------------------


                                           DEUTSCHE BANK A.G., NEW YORK AND/OR
                                           CAYMAN ISLANDS BRANCHES, as a Bank

                                           By:
                                               ---------------------------------
                                               Name:
                                               ---------------------------------
                                               Title:
                                               ---------------------------------

                                           By:
                                               ---------------------------------
                                               Name:
                                               ---------------------------------
                                               Title:
                                               ---------------------------------


                                           FLEET NATIONAL BANK, as a Bank

                                           By: /s/ Mathew M. Glauninger
                                               ---------------------------------
                                               Name:      Mathew M. Glauninger
                                               ---------------------------------
                                               Title:     Senior Vice President
                                               ---------------------------------


                                           GENERAL ELECTRIC CAPITAL CORPORATION,
                                           as a Bank

                                           By:
                                               ---------------------------------
                                               Name:
                                               ---------------------------------
                                               Title:
                                               ---------------------------------

                                       5

<PAGE>

                                           KEYBANK NATIONAL ASSOCIATION,
                                           as a Bank

                                           By: /s/ Kevin P. McBride
                                               ---------------------------------
                                               Name:      Kevin P. McBride
                                               ---------------------------------
                                               Title:     Senior Vice President
                                               ---------------------------------


                                           MELLON BANK, as a Bank

                                           By: /s/ Lawrence C. Ivey
                                               ---------------------------------
                                               Name:      Lawrence C. Ivey
                                               ---------------------------------
                                               Title:     Vice President
                                               ---------------------------------


                                           PARIBAS, as a Bank

                                           By: /s/ John Kopcha
                                               ---------------------------------
                                               Name:      John Kopcha
                                               ---------------------------------
                                               Title:     Director
                                               ---------------------------------

                                           By: /s/ Jonathan Leone
                                               ---------------------------------
                                                Name:      Jonathan Leone
                                               ---------------------------------
                                                Title:     Vice President
                                               ---------------------------------


                                           ROYAL BANK OF CANADA, as a Bank

                                           By:
                                               ---------------------------------
                                               Name:
                                               ---------------------------------
                                               Title:
                                               ---------------------------------


                                           SANWA BANK LIMITED,
                                           LOS ANGELES BRANCH, as a Bank

                                           By:  /s/ Peter G. Olson
                                               ---------------------------------
                                                Name:      Peter G. Olson
                                               ---------------------------------
                                                Title:     First Vice President
                                               ---------------------------------

                                       6


<PAGE>


                                           THE BANK OF NOVA SCOTIA, as a Bank

                                           By:  /s/ Chris Osborn
                                               ---------------------------------
                                                Name:      Chris Osborn
                                               ---------------------------------
                                                Title:     Relationship Manager
                                               ---------------------------------


                                           THE FUJI BANK, LIMITED, as a Bank

                                           By:  /s/ Masahito Fukuda
                                               ---------------------------------
                                                Name:      Masahito Fukuda
                                               ---------------------------------
                                                Title:     SVP & GH
                                               ---------------------------------


                                           THE INDUSTRIAL BANK OF
                                           JAPAN, LIMITED, as a Bank

                                           By:       /s/ Ken Iwata
                                               ---------------------------------
                                                Name:      Ken Iwata
                                               ---------------------------------
                                                Title:     Senior Vice President
                                                           and Manager
                                               ---------------------------------


                                           THE MITSUBISHI TRUST AND
                                           BANKING CORPORATION, LOS ANGELES
                                           AGENCY, as a Bank

                                           By:       /s/ Toshihiro Hayashi
                                               ---------------------------------
                                                Name:      Toshihiro Hayashi
                                               ---------------------------------
                                                Title:     Senior Vice President
                                               ---------------------------------


                                           THE SUMITOMO BANK, LIMITED, as a Bank

                                           By:  /s/ Azar Shakeri
                                               ---------------------------------
                                                Name:      Azar Shakeri
                                               ---------------------------------
                                                Title:     Vice President
                                               ---------------------------------


                                       7


<PAGE>


                                           UNION BANK OF CALIFORNIA, N.A.,
                                           as a Bank

                                           By:  /s/ Glenn Leyrer
                                               ---------------------------------
                                                Name:      Glenn Leyrer
                                               ---------------------------------
                                                Title:     Vice President
                                               ---------------------------------

                                       8



<TABLE> <S> <C>


<ARTICLE>             5
<LEGEND>
THIS  SCHEDULE  CONTAINS  SUMMARY  FINANCIAL   INFORMATION  EXTRACTED  FROM  THE
FINANCIAL  STATEMENTS OF QUANTUM CORPORATION FOR THE QUARTER ENDED SEPTEMBER 26,
1999
</LEGEND>
<MULTIPLIER>                              1,000

<S>                                 <C>
<PERIOD-TYPE>                             6-MOS
<FISCAL-YEAR-END>                   MAR-31-2000
<PERIOD-START>                       APR-1-1999
<PERIOD-END>                        SEP-26-1999
<CASH>                                  689,010
<SECURITIES>                             34,634
<RECEIVABLES>                           602,679
<ALLOWANCES>                             10,421
<INVENTORY>                             273,647
<CURRENT-ASSETS>                        257,652
<PP&E>                                  539,172
<DEPRECIATION>                          267,542
<TOTAL-ASSETS>                        2,457,799
<CURRENT-LIABILITIES>                   718,332
<BONDS>                                 335,912
                         0
                                   0
<COMMON>                                936,867
<OTHER-SE>                              388,343
<TOTAL-LIABILITY-AND-EQUITY>          2,457,799
<SALES>                               2,208,359
<TOTAL-REVENUES>                      2,208,359
<CGS>                                 1,893,103
<TOTAL-COSTS>                         1,893,103
<OTHER-EXPENSES>                        371,061
<LOSS-PROVISION>                              0
<INTEREST-EXPENSE>                       14,426
<INCOME-PRETAX>                        (70,231)
<INCOME-TAX>                           (15,859)
<INCOME-CONTINUING>                    (54,372)
<DISCONTINUED>                                0
<EXTRAORDINARY>                               0
<CHANGES>                                     0
<NET-INCOME>                           (54,372)
<EPS-BASIC>                                   0<F1>
<EPS-DILUTED>                                 0<F1>
<FN>
<F1>
    DSS Group EPS-Basic                  0.44
    DSS Group EPS-Diluted                0.42
    HDD Group EPS-Basic                 (1.53)
    HDD Group EPS-Diluted               (1.53)
</FN>


</TABLE>


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