1.

Quantum Data Storage B.V., a Netherlands corporation

2.

Quantum Peripheral Products (Ireland) Ltd., an Ireland corporation

3.

Quantum Peripherals (Europe) S.A., a Swiss corporation

4.

Quantum Peripherals (Malaysia) Sdn. Bhd., a Malaysian corporation

5.

Quantum Storage GmbH, a German corporation

6.

Quantum Storage Australia PTY, Ltd., an Australian corporation

7.

Quantum Storage Japan Corporation, a Japanese corporation

8.

Quantum Storage Singapore Pte. Ltd., a Singapore private company

9.

Quantum Storage UK Ltd., a United Kingdom corporation

10.

Quantum Storage France, a France corporation

11.

Benchmark Tape systems Ltd, a United Kingdom company

12.

ATL Products Vertriebs GmbH., a German corporation

13.

ATL Products UK Ltd., a United Kingdom corporation

14.

ATL Products International Inc., a Delaware corporation

15.

M4 Data (Holdings) Ltd., a United Kingdom corporation

16.

SANlight Inc., a Delaware corporation.