1 EXHIBIT 21 WESTERN DIGITAL CORPORATION SUBSIDIARIES OF THE COMPANY NAME JURISDICTION ---- ------------ Connex, Inc. ............................................... Delaware Pacifica Insurance Corporation.............................. Hawaii SageTree, Inc. ............................................. Delaware Western Digital Canada Corporation.......................... Canada Western Digital (Deutschland) GmbH.......................... Federal Republic of Germany Western Digital (France) SARL............................... France Western Digital Hong Kong Limited........................... Hong Kong Western Digital Ireland, Ltd. .............................. Cayman Islands Western Digital (I.S.) Limited.............................. Ireland Western Digital Japan Ltd. ................................. Japan Western Digital (Malaysia) Sdn Bhd.......................... Malaysia Western Digital Netherlands B.V. ........................... The Netherlands Western Digital (S.E. Asia) Pte Ltd......................... Singapore Western Digital (Singapore) Pte Ltd......................... Singapore Western Digital Taiwan Co., Ltd. ........................... Taiwan, Republic of China Western Digital (Tuas-Singapore) Pte Ltd.................... Singapore Western Digital (U.K.) Limited.............................. United Kingdom