Western Digital Corporation, headquartered in San Jose, CA, is a leading developer and manufacturer of data storage devices and solutions based on NAND flash and hard disk drive technologies. It provides broad range of HDD and Flash storage solutions used in desktop PCs, servers, network-attached storage devices, video game consoles, digital video recorders and a host of other consumer electronic devices.

The acquisition of SanDisk (2016) enabled the company to venture into the flash drive storage technology space. The company also has a huge patent portfolio with 13,000 active patents globally.

The company markets its products and solutions through its sales personnel, dealers, distributors, retailers, and subsidiaries.

Western Digital reported revenues of $3.03 billion in the fiscal second quarter of 2024. The company reports revenues under Flash and HDD business segments. For the fiscal second quarter, Flash comprised 54.9% of total revenues while HDD comprised 45.1%.

At the beginning of first-quarter fiscal 2022, Western Digital started reporting revenues under three refined end markets — Cloud (includes products for public or private cloud), Client (includes products sold directly to OEMs or through distribution) and Consumer (includes retail and other end-user products).

Revenues from the Cloud end market comprised 35% of the total revenues for second quarter of fiscal 2024. Revenues from the Client end market and Consumer end market were 37% and 28% of total revenues, respectively.

Western Digital mainly competes with companies like Intel, Micron, Samsung Electronics Co. Ltd., Seagate Technology and Toshiba Corporation.

In October 2023, Western Digital announced the separation of the company's HDD and Flash businesses. This strategic move is aimed at establishing two independent, publicly traded companies, each with a specific focus on its respective market. The company envisions this separation as a tax-free process and aims to execute it during the second half of 2024.