    <SEC-DOCUMENT>0000709283-21-000039-index.html : 20210728
    <SEC-HEADER>0000709283-21-000039.hdr.sgml : 20210728
    <ACCEPTANCE-DATETIME>20210728162721
    ACCESSION NUMBER:		0000709283-21-000039
    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		22
    CONFORMED PERIOD OF REPORT:	20210331
    FILED AS OF DATE:		20210728
    DATE AS OF CHANGE:		20210728

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			QUANTUM CORP /DE/
    		CENTRAL INDEX KEY:			0000709283
    		STANDARD INDUSTRIAL CLASSIFICATION:	COMPUTER STORAGE DEVICES [3572]
    		IRS NUMBER:				942665054
    		STATE OF INCORPORATION:			DE
    		FISCAL YEAR END:			0331

    	FILING VALUES:
    		FORM TYPE:		DEF 14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-13449
    		FILM NUMBER:		211122854

    	BUSINESS ADDRESS:
    		STREET 1:		224 AIRPORT PARKWAY
    		STREET 2:		SUITE 550
    		CITY:			SAN JOSE
    		STATE:			CA
    		ZIP:			95110
    		BUSINESS PHONE:		408 944 4000

    	MAIL ADDRESS:
    		STREET 1:		224 AIRPORT PARKWAY
    		STREET 2:		SUITE 550
    		CITY:			SAN JOSE
    		STATE:			CA
    		ZIP:			95110
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEF 14A
    <SEQUENCE>1
    <FILENAME>fy21definitiveproxy.htm
    <DESCRIPTION>DEF 14A
    <TEXT>
    Document 1 - file: fy21definitiveproxy.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>directorspostchangesa.jpg
    <TEXT>
    Document 2 - file: directorspostchangesa.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>image10a.jpg
    <TEXT>
    Document 3 - file: image10a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>4
    <FILENAME>image11a.jpg
    <TEXT>
    Document 4 - file: image11a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>5
    <FILENAME>image12a.jpg
    <TEXT>
    Document 5 - file: image12a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>6
    <FILENAME>image13a.jpg
    <TEXT>
    Document 6 - file: image13a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>7
    <FILENAME>image1a.jpg
    <TEXT>
    Document 7 - file: image1a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>8
    <FILENAME>image2a.jpg
    <TEXT>
    Document 8 - file: image2a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>9
    <FILENAME>image3.jpg
    <TEXT>
    Document 9 - file: image3.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>10
    <FILENAME>image4a.jpg
    <TEXT>
    Document 10 - file: image4a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>11
    <FILENAME>image5a.jpg
    <TEXT>
    Document 11 - file: image5a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>12
    <FILENAME>image6a.jpg
    <TEXT>
    Document 12 - file: image6a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>13
    <FILENAME>image7a.jpg
    <TEXT>
    Document 13 - file: image7a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>14
    <FILENAME>image8a.jpg
    <TEXT>
    Document 14 - file: image8a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>15
    <FILENAME>image9a.jpg
    <TEXT>
    Document 15 - file: image9a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>16
    <FILENAME>imagea.jpg
    <TEXT>
    Document 16 - file: imagea.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>17
    <FILENAME>lernersiga.jpg
    <TEXT>
    Document 17 - file: lernersiga.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>18
    <FILENAME>meetingtime2a.jpg
    <TEXT>
    Document 18 - file: meetingtime2a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>19
    <FILENAME>proxy-statementxcover2a.jpg
    <TEXT>
    Document 19 - file: proxy-statementxcover2a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>20
    <FILENAME>qlogoa.jpg
    <TEXT>
    Document 20 - file: qlogoa.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>21
    <FILENAME>quantumproxycardpage1a.jpg
    <TEXT>
    Document 21 - file: quantumproxycardpage1a.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>22
    <FILENAME>quantumproxycardpage2a.jpg
    <TEXT>
    Document 22 - file: quantumproxycardpage2a.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>