ADVANCED DIGITAL INFORMATION CORP

Q: Apr 30 2006

Q: Jan 31 2006

FY: Oct 31 2005

FY: Oct 31 2005

Q: Jul 31 2005

Q: Apr 30 2005

Q: Jan 31 2005

FY: Oct 31 2004

Q: Jul 31 2004

Q: Jul 31 2004

Q: Apr 30 2004

Q: Jan 31 2004

FY: Oct 31 2003

Q: Jul 31 2003

Q: Apr 30 2003

Q: Jan 31 2003

FY: Oct 31 2002

Q: Jul 31 2002

Q: Apr 30 2002

Q: Jan 31 2002

2.01,8.01,9.01

8.01

8.01

8.01

8.01

1.01,9.01

1.01

2.02,8.01,9.01

1.01,9.01

2.02,9.01

1.01,8.01,9.01

2.02,9.01

1.01,2.02,9.01

2.02,9.01

2.02,7.01,9.01

Results of Operations and Financial Condition

2.05

8.01,9.01

Results of Operations and Financial Condition

Results of Operations and Financial Condition

Notification of removal from listing and/or registration on a national securities exchange

Certification of termination of registration of a class of securities (Section 12(g))

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

WESTFIELD CAPITAL MANAGEMENT CO LLC

GACEK JON W

BRITTS WILLIAM C

Clarke Lisa A

BRITTS WILLIAM C

GACEK JON W

STONECIPHER CHARLES H

VAN OPPEN PETER H

VAN OPPEN PETER H

QUANTUM CORP /DE/

STANTON JOHN W

BAYLEY CHRISTOPHER T

BAYLEY CHRISTOPHER T

WALKER WALTER F

ALBERG TOM A

STANTON JOHN W

HIGGINS FRANK MILTON

BAYLEY CHRISTOPHER T

WESTFIELD CAPITAL MANAGEMENT CO LLC

ARTISAN PARTNERS LTD PARTNERSHIP

Letter from the SEC

Correspondence with the SEC

Annual Report Scanned (Paper)