Exhibit 21

QUANTUM CORPORATION
SUBSIDIARIES OF THE REGISTRANT
1
A.C.N. 120.786.012 Pty. Ltd., an Australian company
2
Advanced Digital Information Corporation, a Washington Corporation
3
Certance (US) Holdings, Inc., a Delaware corporation
4
Certance Holdings Corporation, a Delaware corporation
5
Certance LLC, a Delaware limited liability company
6
Pancetera Software Inc., a Delaware corporation
7
Quantum Beteiligungs GmbH, a German corporation
8
Quantum Boehmenkirch GmbH & Co. KG, a German corporation
9
Quantum Engineering Australia Pty. Ltd., an Australian company
10
Quantum GmbH, a German corporation
11
Quantum India Development Center Private Ltd., an Indian company
12
Quantum International Inc., a Delaware corporation
13
Quantum Korea Co. Ltd., a Korean corporation
14
Quantum Peripherals (Europe) SARL, a Swiss corporation
15
Quantum SARL, a French corporation
16
Quantum Storage Australia Pty. Ltd., an Australian corporation
17
Quantum Storage GmbH, a Swiss corporation
18
Quantum Storage Japan Corporation, a Japanese corporation
19
Quantum Storage Singapore Pte. Ltd., a Singapore private company
20
Quantum Storage UK Ltd., a United Kingdom corporation