Western Digital Now Sampling World’s First 20TB SMR and 18TB CMR Hard Disk Drives

Company Continues its Leadership in High-Capacity Enterprise HDDs, Delivering Unprecedented TCO Value, Enabling Customers to Efficiently Scale their Data Centers for the Zettabyte Age

SAN JOSE, CA - December 20, 2019

Western Digital (NASDAQ: WDC) announced that it has started shipping the industry's highest-capacity HDD samples to enterprise OEMs and hyperscale customers worldwide. The 20TB Ultrastar DC HC650 SMR HDDs and 18TB Ultrastar DC HC550 CMR HDDs, first previewed in June 2019, and announced in September 2019, feature its first-ever commercial implementation of energy-assisted magnetic recording technology on a nine-disk platform, enabling customers to more efficiently provision and scale their data center environments with unmatched total cost of ownership.

With zettabyte-scale data growth, the need for higher-capacity data storage across a broad spectrum of applications and workloads can be reliably met only with high Capacity Enterprise HDDs. The industry-leading capacities of Western Digital's Ultrastar 20TB SMR and 18TB CMR HelioSeal HDDs enable customers to deploy up to 22 percent fewer racks and reduce their TCO by up to 11 percent, along with the corresponding reductions in power consumption, cooling costs, and data center infrastructure needs when compared with today's 14TB CMR HDDs.1

Western Digital achieves the industry's highest areal density performance in these drives through the innovative use of energy-assisted magnetic recording. Together with the company's HelioSeal and SMR technologies, triple-stage micro actuation and 9-disk platform, the energy-assisted recording technology provides an integrated solution, resulting in the dramatic gain in drive capacities.

"The market outlook for capacity-optimized enterprise HDDs remains very positive as IDC expects petabytes shipped to hyperscale cloud data centers and for OEM storage systems and servers to grow at a combined compound annual growth rate of 28% through 2023," said Ed Burns, Research Director, HDD and Storage Technologies at IDC. "Western Digital's new 20TB and 18TB HDDs should make a compelling case for customers to transition to higher capacity points as they seek greater storage and energy efficiencies in the near-term while building more cost-effective and scalable infrastructures for the future."

"Delivering samples of our Ultrastar 20TB SMR and 18TB CMR HDDs marks a significant milestone for Western Digital—demonstrating our enduring commitment to the open SMR-based ecosystem, as well as our strong track record of innovation to provide great value for our customers," said Phil Bullinger, senior vice president and general manager of Western Digital's Data Center Business Unit. "These new HDDs deliver unsurpassed capacity and are our first to leverage energy-assisted magnetic recording technology, enabling new levels of data center efficiency and driving value creation from data at scale."

Western Digital is now sampling the 20TB Ultrastar DC HC650 SMR HDD and the 18TB Ultrastar DC HC550 CMR HDD, with qualification and volume shipments expected in the first half of 2020.

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About Western Digital
Western Digital creates environments for data to thrive. As a leader in data infrastructure, 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. Our data-centric solutions are comprised of the Western Digital®, G-Technology™, SanDisk®, and WD® brands.

1TCO savings based on Western Digital calculations of typical system component and operations costs of a 4U 100 HDD system as of 12/2019.

As used for storage capacity, one terabyte (TB) = 1,000,000,000,000 bytes. Accessible capacity may be less depending on operating environment.

© 2019 Western Digital Corporation or its affiliates. All rights reserved.

Western Digital, the Western Digital logo, G-Technology, SanDisk, WD, HelioSeal, and Ultrastar are registered trademarks or trademarks of Western Digital Corporation or its affiliates in the US and/or other countries. All other marks are the property of their respective owners. Product specifications subject to change without notice. Pictures shown may vary from actual products. Not all products will be available in all regions of the world.

Forward-Looking Statements
This news release contains forward-looking statements that involve risks and uncertainties, including, but not limited to, statements regarding market positioning; product features, cost and availability; and market trends. Forward-looking statements should not be read as a guarantee of future results, and will not necessarily be accurate indications of the times at, or by, which such results will be achieved, if at all. Forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from those expressed in or suggested by the forward-looking statements.

Key risks and uncertainties include volatility in global economic conditions; business conditions and growth in the storage ecosystem; impact of competitive products and pricing; actions by competitors; unexpected advances in competing technologies; our development and introduction of products based on new technologies and expansion into new data storage markets; difficulties or delays in manufacturing; and other risks and uncertainties listed in the company's filings with the Securities and Exchange Commission (the "SEC") and available on the SEC's website at www.sec.gov, including our most recently filed periodic report, to which your attention is directed. We do not undertake any obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future developments or otherwise, except as required by law.

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