EXHIBIT 21 WESTERN DIGITAL CORPORATION SUBSIDIARIES OF THE COMPANY STATE OR OTHER JURISDICTION OF NAME INCORPORATION - ---- --------------- Western Digital Technologies, Inc. Delaware Western Digital Ventures, Inc. Delaware Pacifica Insurance Corporation Hawaii Western Digital Canada Corporation Ontario, Canada Western Digital (Deutschland) GmbH 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 (Thailand) Company Limited Thailand Western Digital Korea, Ltd. Republic of Korea Western Digital Latin America, Inc. Delaware