WD teases new HDD solutions at Innovation Day: 100TB+ in 2029, new High Bandwidth Drive tech

Western Digital just hosted its Innovation Day 2026 event, unveiling new consumer-focused roadmaps that will see the reinvention of the HDD for AI, and reinforcing the company's position as a strategic storage infrastructure partner for the new AI-driven data economy.

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The company laid out plans to unveil a gigantic 100TB+ HDD by 2029, reinforcing its dual ePMR and HAMR technologies, announcing a new 40TB UltraSMR ePMR HDD in its qualification with two hyperscaler companies and volume production coming in the second half of 2026.

WD plans to extend ePMR to 60TB by using HAMR innovations, all without increasing power consumption, while HAMR will be scaling to the lofty heights of 100TB by 2029. WD is using a dual-path approach as both ePMR and HAMR are built on a common architecture, something that the company says enables greater manufacturing efficiencies, yields, and a smoother customer product transition.

• Read more: Solidigm intros the world's highest capacity PCIe SSD, with its new 122TB SSD for AI workloads
• Read more: Phison's new Pascari D205V Gen5 data center SSD: up to 122.88TB, up to 14.6GB/sec reads

Not only that, but WD is also closing the QLC flash performance gap with next-gen HDD architectures, introducing two industry-first innovations that "fundamentally reset" HDD performance.

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HDD Performance Architecture: Closing the QLC Flash Gap

Addressing the performance demands of AI workloads, WD introduced two industry-first innovations that fundamentally reset HDD performance. These innovations address workloads previously considered flash-only, creating a new performance tier that balances speed and capacity without compromising economics, which is critical as flash faces persistent cost premiums (6-10x vs. HDD) and endurance limitations:

• High Bandwidth Drive Technology enables simultaneous reading and writing from multiple heads on multiple tracks delivering up to 2x the bandwidth of conventional HDDs without power penalties. The technology has a clear path to scale up to 8x bandwidth gains and is already in customer hands for validation.
• Dual Pivot Technology adds a second set of independently operating actuators on a separate pivot and will deliver up to 2x sequential IO gain within a 3.5-inch drive. This differs from previous dual actuator designs that sacrificed capacity and required extensive customer software changes. Dual Pivot enables reduced spacing between disks, allowing for more platters per drive and higher overall capacity.