Western Digital is one of the world's two leading manufacturers of hard disk drives, focused on mass-capacity storage for cloud data centers following the February 2025 spin-off of its NAND flash business as SanDisk. Its nearline enterprise drives, sold to hyperscale cloud providers, account for the large majority of revenue, where AI-driven growth in stored data has tightened supply and lifted pricing. The company's technology roadmap includes energy-assisted recording (ePMR), OptiNAND, UltraSMR shingled recording, and the transition toward heat-assisted magnetic recording (HAMR) to push drive capacities beyond 30 terabytes. Western Digital also sells smart video, network-attached storage, and external drives under the WD brand. Founded in 1970, the company is headquartered in San Jose, California.

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Western Digital Corp