The HDD Industry’s Second Act: Nearline Storage Reasserts Its Power in the AI Era

What’s in This Article

Introduction

Soaring exabytes redefine the HDD narrative

Revenues follow capacity, not units

Nearline dominates the growth equation

Non-nearline HDD markets continue to contract

Equity markets validate the structural shift

HAMR versus UltraSMR: a widening technology gap

Investor Takeaway

Introduction

Contract negotiations for the fourth quarter of 2025 closed with hard disk drive pricing settling approximately 4 percent higher quarter over quarter, marking the largest increase in eight quarters and extending a pricing recovery that began in earnest in late 2023. While modest in absolute terms, the increase is meaningful in context. It confirms that supply discipline and structural demand growth are now overwhelming the legacy narrative of HDD secular decline.

This pricing strength reflects two converging forces. First, hyperscalers and cloud service providers continue to expand nearline storage capacity to support AI training, inference, and long-duration data retention. Second, China has emerged as a steady buyer of large-capacity 3.5-inch drives, particularly for domestic cloud, enterprise, and national computing initiatives. Together, these dynamics are reshaping HDD demand from a unit-driven business into a capacity-driven one, where exabytes matter far more than shipments.

Data for this article comes from my report, The Hard Disk Drive (HDD) and Solid State Drive (SSD) Industries: Market Analysis and Processing Trends, available at www.theinformationnet.com.

Soaring exabytes redefine the HDD narrative

According to Chart 1, total HDD exabyte shipments have resumed a sustained upward trajectory following the industry downturn of 2022 and early 2023. The chart shows quarterly exabyte shipments for Western Digital, Seagate, and Toshiba from 1Q19 through 4Q25, with linear trendlines that make the structural nature of the recovery unmistakable.