Ownership Submission

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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3235-0104

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(Print or Type Responses)

1. Name and Address of Reporting Person ^*

KREIGLER GEORGE III

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)

_____ Director	_____ 10% Owner
__X__ Officer (give title below)	_____ Other (specify below)
SVP,GM Storage Systems

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)
	Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.

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)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)
Option #H10506	05/01/1998⁽¹⁾	05/22/2008	DSS Common Stock ⁽²⁾	854	$ 7.1921	D
Option #H13693	04/01/1999⁽³⁾	02/19/2009	DSS Common Stock ⁽²⁾	797	$ 6.8537	D
Option #H15901	04/01/1999⁽³⁾	06/04/2009	DSS Common Stock ⁽²⁾	790	$ 6.4306	D
Option #H14171	04/01/1999⁽³⁾	06/04/2009	DSS Common Stock ⁽²⁾	406	$ 6.4306	D
Option #H15891	04/01/1999⁽⁴⁾	06/04/2009	DSS Common Stock ⁽²⁾	4,552	$ 6.4306	D
Option #H17426	01/01/2000⁽⁵⁾	01/11/2010	DSS Common Stock ⁽²⁾	759	$ 8.7879	D
Option #H22728	01/01/2000⁽⁶⁾	01/11/2010	DSS Common Stock ⁽²⁾	23	$ 8.7879	D
Option #D26291	04/01/2000⁽³⁾	06/21/2010	DSS Common Stock ⁽²⁾	8,052	$ 9.5625	D
Option #DN26291	04/01/2000⁽³⁾	06/21/2010	DSS Common Stock ⁽²⁾	16,255	$ 9.5625	D
Option #H26291	04/01/2000⁽³⁾	06/21/2010	DSS Common Stock ⁽²⁾	3,281	$ 12.4953	D
Option #HN26291	04/01/2000⁽³⁾	06/21/2010	DSS Common Stock ⁽²⁾	11,892	$ 12.4953	D
Option #D32056	07/01/2001⁽¹⁾	01/07/2012	DSS Common Stock ⁽²⁾	17,240	$ 10.93	D
Option #D32057	07/01/2001⁽¹⁾	01/07/2012	DSS Common Stock ⁽²⁾	12,760	$ 10.93	D
Option #D32058	07/01/2001⁽³⁾	01/07/2012	DSS Common Stock ⁽²⁾	2,000	$ 10.93	D
Option #D32059	07/01/2001⁽³⁾	01/07/2012	DSS Common Stock ⁽²⁾	4,000	$ 10.93	D
Option #D32060	07/01/2001⁽³⁾	01/07/2012	DSS Common Stock ⁽²⁾	919	$ 10.93	D
Option #D32061	07/01/2001⁽⁷⁾	01/07/2012	DSS Common Stock ⁽²⁾	30,000	$ 10.93	D
Option #D32062	07/01/2001⁽³⁾	01/07/2012	DSS Common Stock ⁽²⁾	8,081	$ 10.93	D
Option #D32328	07/01/2001⁽³⁾	01/07/2012	DSS Common Stock ⁽²⁾	24,048	$ 10.93	D
Option #DN32328	07/01/2001⁽³⁾	01/07/2012	DSS Common Stock ⁽²⁾	55,952	$ 10.93	D
Option #D33347	04/01/2002⁽³⁾	05/02/2012	DSS Common Stock ⁽²⁾	85,500	$ 6.7	D
Option #D33384	04/01/2002⁽³⁾	05/02/2012	DSS Common Stock ⁽²⁾	42,750	$ 6.7	D
Option #D33575	07/01/2002⁽³⁾	07/31/2012	DSS Common Stock ⁽²⁾	51,657	$ 2.08	D
Option #D35027	07/01/2003⁽⁵⁾	07/29/2008	DSS Common Stock ⁽²⁾	143,400	$ 2.95	D

Reporting Owners

Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
KREIGLER GEORGE III 1650 TECHNOLOGY DRIVE, SUITE 800 SAN JOSE, CA 95110			SVP,GM Storage Systems

Signatures

George Kreigler, III		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)	Vests 25% on first anniversary and monthly thereafter at a rate of 1/48th per month for remaining three years.
(2)	Right to buy granted under Rule 16b(3) plan.
(3)	Equal monthly vesting over 48 months.
(4)	2,276 shares vest on 4-1-04; 2,276 shares vest on 4-1-05.
(5)	Equal monthly vesting over 24 months.
(6)	50% vests on 1-1-01; 50% vests on 1-1-02.
(7)	20,000 shares vest on 7-1-01; 5,000 shares vest on 7-1-06; 5,000 shares vest on 7-1-07.

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