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		Quantum Beteiligungs GmbH, a German corporation
7		Quantum Boehmenkirch GmbH & Co. KG, a German corporation
8		Quantum Distribution UK Ltd., a United Kingdom corporation
9		Quantum GmbH, a German corporation
10		Quantum India Development Center Private Ltd., an Indian company
11		Quantum International Inc., a Delaware corporation
12		Quantum Korea Co. Ltd., a Korean corporation
13		Quantum Peripherals (Europe) SARL, a Swiss corporation
14		Quantum SARL, a French corporation
15		Quantum Storage Australia Pty. Ltd., an Australian corporation
16		Quantum Storage GmbH, a Swiss corporation
17		Quantum Storage Japan Corporation, a Japanese corporation
18		Quantum Storage Singapore Pte. Ltd., a Singapore private company
19		Quantum Storage UK Ltd., a United Kingdom corporation
20		Rocksoft Pty. Ltd., an Australian company