From calculator chips to AI infrastructure: the evolution of a data storage giant
Founded in 1970, Western Digital began as a semiconductor manufacturer before pivoting to become a dominant force in hard disk drive technology. After decades of acquisitions, market slumps, and technological shifts, the company has recently spun off its flash business to focus exclusively on high-capacity storage for the AI era.
Western Digital was established on April 23, 1970, by Alvin B. Phillips as General Digital Corporation. Initially focused on MOS test equipment and calculator chips, the company became the world's largest independent calculator chip maker by 1975. However, the mid-1970s oil crisis and the bankruptcy of a major client forced Western Digital into Chapter XI bankruptcy in 1976. This period marked a critical transition, as the company entered the data storage industry with the FD 1771 floppy disk controller.
The 1980s and 1990s saw Western Digital expand through aggressive acquisitions, including Paradise Systems and Faraday Electronics, while becoming a key supplier for IBM. The company's fortunes fluctuated with the rise of the PC industry; it faced significant challenges in the late 1990s as its technological lead in Caviar drives waned. A strategic partnership with IBM in 1998 helped restore its market position, leading to innovations like the 8 MB cache 'Special Edition' drives and the high-performance Raptor series for servers.
In the 21st century, Western Digital pursued massive consolidation, acquiring HGST in 2012 and SanDisk in 2016. These moves transformed the company into a diversified storage powerhouse. However, the company faced operational hurdles, including cyberattacks and contamination issues in its flash memory joint ventures. By February 2025, Western Digital completed a strategic reversal by spinning off its flash business as SanDisk Corporation.
Today, the company operates as a standalone hard-disk-drive specialist, focusing on the massive data demands of artificial intelligence and cloud computing. Its current roadmap emphasizes high-capacity technologies like UltraSMR and heat-assisted magnetic recording (HAMR), aiming for capacities exceeding 100TB. By integrating post-quantum cryptography into its Ultrastar line, the company is positioning itself to secure the vast training data required by modern AI systems.
Source: Western Digital
