FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  WHEELWRIGHT STEVEN
2. Date of Event Requiring Statement (Month/Day/Year)
02/09/2004
3. Issuer Name and Ticker or Trading Symbol
QUANTUM CORP /DE/ [DSS]
(Last)
(First)
(Middle)
1650 TECHNOLOGY DRIVE, SUITE 800
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

SAN JOSE, CA 95110
6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Option #D6930 09/06/1995(1) 09/06/2005 DSS Common Stock (2) 15,000 $ 10.3628 D  
Option #H6930 09/06/1995(1) 09/06/2005 DSS Common Stock (2) 6,827 $ 4.1461 D  
Option #DA8358 09/03/1996(1) 09/03/2006 DSS Common Stock (2) 15,000 $ 6.3446 D  
Option #HA8358 09/03/1996(1) 09/03/2006 DSS Common Stock (2) 6,827 $ 2.5384 D  
Option #D10123 04/01/2000(1) 07/22/2007 DSS Common Stock (2) 12,500 $ 22.7348 D  
Option #H10123 04/01/2000(1) 07/22/2007 DSS Common Stock (2) 5,689 $ 9.0959 D  
Option #D12063 04/01/2001(1) 09/15/2008 DSS Common Stock (2) 12,500 $ 12.6363 D  
Option #H12063 04/01/2001(1) 09/15/2008 DSS Common Stock (2) 5,689 $ 5.0557 D  
Option #D15821 04/01/1999(1) 06/04/2009 DSS Common Stock (2) 12,500 $ 16.073 D  
Option #H15821 04/01/1999(1) 06/04/2009 DSS Common Stock (2) 5,689 $ 6.4307 D  
Option #D35415 02/09/2004(3) 02/09/2014 DSS Common Stock (2) 45,000 $ 3.95 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
WHEELWRIGHT STEVEN
1650 TECHNOLOGY DRIVE, SUITE 800
SAN JOSE, CA 95110
  X      

Signatures

Steven C. Wheelwright 02/17/2004
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Equal monthly vesting over 12 months.
(2) Right to buy granted under Rule 16b(3) Plan.
(3) Vests 25% on first anniversary and monthly thereafter at a rate of 1/48th per month for remaining three years.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

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