STORAGE TECHNOLOGY CORP
SC 13G/A, 1995-04-24
COMPUTER STORAGE DEVICES
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549


                                  Schedule 13G
                                (Amendment No. 3)


                    Under the Securities Exchange Act of 1934



                            STORAGE TECHNOLOGY CORP.
                 -----------------------------------------------
                                (Name of Issuer)




                 $3.50 CONVERTIBLE EXCHANGEABLE PREFERRED STOCK
          ------------------------------------------------------------
                         (Title or Class of Securities)



                                    862111309
                 -----------------------------------------------
                                 (CUSIP Number)


Check the following box if a fee is being paid with this statement / /.  (A fee
is not required only if the filing person: (1) has a previous statement on file
reporting beneficial ownership of more than five percent of the class of
securities described in Item 1; and (2) has filed no amendment subsequent
thereto reporting beneficial ownership of five percent or less of such class.)
(See Rule 13d-7.)


                        (Continued on following page(s))

                                Page 1 of 4 Pages
<PAGE>

- ----------------------------------           ----------------------------------
  CUSIP No.   862111309                             Page 2 of 4 Pages
- ----------------------------------           ----------------------------------


  1  NAME OF REPORTING PERSON
     S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

          THE TCW GROUP, INC.
          (FORMERLY KNOWN AS TCW MANAGEMENT COMPANY)
          95-3703295

 2   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                            (a)     / /
                                                            (b)     / /
- -------------------------------------------------------------------------------
 3   SEC USE ONLY

- -------------------------------------------------------------------------------
 4   CITIZEN OR PLACE OF ORGANIZATION

     NEVADA
- -------------------------------------------------------------------------------
               5   SOLE VOTING POWER
                                                                 57,400
  NUMBER OF  ------------------------------------------------------------------
   SHARES      6   SHARED VOTING POWER
BENEFICIALLY                                                          0
  OWNED BY   ------------------------------------------------------------------
    EACH       7   SOLE DISPOSITIVE POWER
  REPORTING                                                      57,400
    PERSON   ------------------------------------------------------------------
     WITH      8   SHARED DISPOSITIVE POWER
                                                                      0
- -------------------------------------------------------------------------------
 9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                                                                 57,400
- -------------------------------------------------------------------------------
10   CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN
     SHARES*

- -------------------------------------------------------------------------------
11   PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
                                                                  1.9%
- -------------------------------------------------------------------------------
12   TYPE OF REPORTING PERSON
                                                                  HC
- -------------------------------------------------------------------------------
<PAGE>

- ----------------------------------           ----------------------------------
    Cusip No.   862111309                           Page 3 of 4 Pages
- ----------------------------------           ----------------------------------

     Item 1(a)  Name of Issuer:

     STORAGE TECHNOLOGY CORP.

     Item 1(b)  Address of Issuer's Principal Executive Offices:

     2270 SOUTH 88TH ST., LOUISVILLE, CO  80028

     Item 2(a)  Name of Person Filing:

     THE TCW GROUP, INC. (FORMERLY KNOWN AS TCW MANAGEMENT COMPANY)

     Item 2(b)  Address of Principal Business Office or, if none,
     Residence:
     865 SOUTH FIGUEROA STREET, LOS ANGELES, CA  90017

     Item 2(c)  Citizenship: NEVADA

     Item 2(d)  Title or Class of Securities: $3.50 CONVERTIBLE
                  EXCHANGEABLE PREFERRED STOCK

     Item 2(e)  CUSIP Number: 862111309

     Item 2.  If this statement is filed pursuant to Rules 13d-1(b),
     or 13d-2(b), check whether the person filing is a:

     (a) [ ]   Broker or Dealer registered under Section 15 of the Act
     (b) [ ]   Bank as defined in section 3(a)(6) of the Act
     (c) [ ]   Insurance Company as defined in section 3(a)(19) of the Act
     (d) [ ]   Investment Company registered under section 8 of the Investment
               Company Act
     (e) [ ]   Investment Adviser registered under section 203 of the
               Investment Advisers Act of 1940
     (f) [ ]   Employee Benefit Plan, Pension Fund which is subject to the
               provisions of the Employee Retirement Income Security Act of 1974
               or Endowment Fund; see section 240.13d-1(b)(1)(ii)(F)
     (g) [X]   Parent Holding Company, in accordance with section 240.13d-
               1(b)(ii)
(G)  Note: See Item 7)
     (h) [ ]   Group, in accordance with section 240.13d-1(b)(1)(ii)(H)

     Item 4.  Ownership.*

     (a) Amount Beneficially Owned:   57,400

     (b) Percent of Class              1.9%

     (c) Number of shares as to which such person has:

     (i)  sole power to vote or to direct the vote                  57,400
    (ii)  shared power to vote or to direct the vote                     0
    (iii) sole power to dispose or to direct the disposition of     57,400
     (iv) shared power to dispose or to direct the disposition of        0

*    The filing of this Schedule 13G shall not be construed as an admission that
     the reporting person or any of its affiliates is, for the purposes of
     Section 13(d) or 13(g) of the Securities Exchange Act of 1934, the
     beneficial owner of any securities covered by this Schedule 13G.  In
     addition, the filing of this Schedule 13G shall not be construed as an
     admission that the reporting person or any of its affiliates is the
     beneficial owner of any securities covered by this Schedule 13G for any
     other purposes than Section 13(d) of the Securities Exchange Act of 1934.
<PAGE>

- ----------------------------------           ----------------------------------
    Cusip No.   862111309                           Page 4 of 4 Pages
- ----------------------------------           ----------------------------------


     Item 5.   Ownership of Five Percent or Less of a Class.

               APPLICABLE.

     Item 6.   Ownership of More than Five Percent on Behalf of Another
               Person.

               Not Applicable.

     Item 7.   Identification and Classification of the Subsidiary Which
               Acquired the Security Being Reported on By the Parent Holding
               Company.

               The reporting person is the parent company of (i) Trust Company
               of the West, a California corporation and a bank as defined in
               Section 3(a)(6) of the Securities Exchange Act of 1934 ("TCW"),
               (ii) TCW Asset Management Company, a California corporation and
               an Investment Adviser registered under Section 203 of the
               Investment Advisers Act of 1940, and (iii) TCW Funds Management,
               Inc., a California corporation and an Investment Adviser
               registered under Section 203 of the Investment Advisers Act of
               1940.

     Item 8.   Identification and Classification of Members of the Group

               Not Applicable.

     Item 9.   Notice of Dissolution of Group

               Not Applicable.

  Item 10.     Certification

     By signing below I certify that, to the best of my knowledge and belief,
the securities referred to above were acquired in the ordinary course of
business and were not acquired for the purpose of and do not have the effect of
changing or influencing the control of the issuer of such securities and were
not acquired in connection with or as a participation in any transaction having
such purpose or effect.

SIGNATURE:

          After reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set forth in this statement is true, complete and
correct.

DATE:     April 18, 1995


SIGNATURE: /s/ Mohan V. Phansalkar


NAME/TITLE:  MOHAN V. PHANSALKAR - VICE PRESIDENT



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