Western Digital to Host Conference Call to Discuss Settlement Regarding NAND Flash-Memory Joint Ventures and Provide Business Update

San Jose, Ca - December 12, 2017

Western Digital Corp. ("Western Digital") (NASDAQ: WDC) today announced that it will host a conference call at 2:30pm PT / 5:30pm ET to discuss today's announcement regarding the global settlement between Toshiba Corporation, Toshiba Memory Corporation and Western Digital, and to provide a business update.

To participate in the conference call, please dial (844) 647-5494 in the U.S. or +1- (661) 378-9454 for international callers, with passcode 7054739. The live conference call and an accompanying presentation can be accessed via webcast from investor.wdc.com. The presentation and webcast archive will also be posted on the same website after the conference call concludes. The conference call telephone replay number is (855) 859-2056 in the U.S. or +1- (404) 537-3406 for international callers, with passcode 7054739.

About Western Digital

Western Digital creates environments for data to thrive. The company is driving the innovation needed to help customers capture, preserve, access and transform an ever-increasing diversity of data. Everywhere data lives, from advanced data centers to mobile sensors to personal devices, our industry-leading solutions deliver the possibilities of data. Western Digital® data-centric solutions are marketed under the G-Technology™, HGST, SanDisk®, Tegile™, Upthere™ and WD® brands. Financial and investor information is available on the company's Investor Relations website at investor.wdc.com.

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Western Digital, the Western Digital logo, G-Technology, SanDisk, Tegile, Upthere and WD are registered trademarks or trademarks of Western Digital Corporation or its affiliates in the U.S. and/or other countries. Other trademarks, registered trademarks, and/or service marks, indicated or otherwise, are the property of their respective owners.

Guidance Summary - updated December 12, 2017