The good-old "spinning rust"—commonly referred to as Hard Disk Drives (HDDs)—may be another leg in the depleted computing infrastructure caused by the AI boom. According to DigiTimes, contract negotiations for the fourth quarter of 2025 concluded with traditional HDD prices settling about 4% higher quarter-over-quarter, marking the largest rise in the past eight quarters. That is over the largest increase in recent years, indicating that the demand is again outpacing supply even in the slower storage segments like HDD. The massive demand reportedly comes from particularly strong uptake for desktop 3.5-inch drives in China and continued heavy procurement of high-capacity units by major U.S. cloud service providers and hyperscalers.

In China, there is a preference for domestically produced CPUs and operating systems, combined with an increase in local PC assembly, which has brought HDDs back into first-class role in certain PC configurations after years of being replaced by SSDs. Additionally, concerns about SSD data retention have led some customers and policymakers to favor HDDs for specific workloads. Large cloud operators are also expanding their exabyte-class storage for AI, analytics, and archival needs. Manufacturers report that utilization rates are at or near full capacity as demand extends beyond traditional surveillance and backup applications. Especially with AI infrastructure, storing massive data for model training has prompted AI labs to use some HDD-based storage infrastructure where speed isn't needed.
Read full story

More...