Old-School Hard Drives Find Fresh Power in AI’s Data Boom

While everyone obsesses over flashy GPUs and cutting-edge chips, humble hard drives are quietly powering the AI revolution — and investors are only starting to notice. Storage veterans Western DigitalWDC

and SeagateSTX

have staged a comeback, each reporting revenue growth of around 30% in their latest quarters. The surge is being fueled by AI’s most fundamental demand, a.k.a. the need to house vast amounts of data.

• Global hard drive revenue is projected to reach roughly $24B next year — essentially doubling from the 2023 downturn when the market hit bottom.
• Manufacturing constraints have created extraordinary demand, with lead times for high-capacity drives now stretching beyond 52 weeks as companies scramble to secure supply.

More room to run: Unlike previous tech cycles, where companies deleted old data to make room for new information, AI applications tend to hoard data indefinitely for regulatory compliance and model improvements. Thanks to this, AI companies are locking in year-long supply contracts at fixed pricing. As Western Digital’s Kris Sennesae puts it, “You don’t have AI without data, you don’t have data without storage.” With both companies enjoying duopoly status in cutting-edge drives, these spinning disk specialists may have found their groove in the AI age.