Exhibit 21.1

SUBSIDIARIES OF REGISTRANT

ADAPTEC FAR EAST, INC., a California corporation

ADAPTEC GMBH, a corporation organized under the laws of Germany

ADAPTEC (INDIA) PVT LTD., a corporation organized under the laws of India

ADPT CAYMAN LICENSING LTD., a corporation organized under the laws of the Cayman Islands

ADPT CI LTD., a corporation organized under the laws of the Cayman Islands

ADPT (S) PTE. LTD., a corporation organized under the laws of Singapore

ADPT TECH HOLDING LTD., a corporation organized under the laws of the Cayman Islands

ARISTOS LOGIC CORPORATION. a Delaware corporation

BASEBALL HEAVEN INC., a Delaware corporation

ICP VORTEX COMPUTERSYSTEME GMBH, a corporation organized under the laws of Germany

PLATYS COMMUNICATIONS, INC., a Delaware corporation

ROGUE PRESSURE SERVICES LTD., a Delaware corporation

SOUTH BAY STRENGTH AND CONDITIONING LLC, a California limited liability company

STEEL ENERGY LTD., a Delaware corporation

STEEL SOCCER CITY, INC., a Delaware corporation

STEEL SPORTS INC., a Delaware corporation

SUN WELL SERVICE, INC., a North Dakota corporation

TORRANCE STRENGTH AND CONDITIONING LLC, a California limited liability company