Are Nearline HDDs the New AI Infrastructure Bottleneck? WDC's Q4 in Focus

tengyanAI · x · 2026-08-05

The author argues that whether nearline HDDs have become an AI infrastructure bottleneck is a stronger signal than the NAND recovery story.

Key Data: Western Digital shipped 222 EB last quarter (+34% YoY), with cloud accounting for 89% of HDD revenue.
Watchlist: If Q4 nearline HDD shipments exceed 240 EB, it suggests hyperscaler demand is outpacing supply, tightening allocations into 2027.
Broader Impact: This trend strengthens the case for Seagate and indicates that hyperscaler storage spending is driving growth independently of NAND market dynamics, acting as a structural AI bottleneck.

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