Seagate confirms 40TB hard drives have already been shipped, but don't expect them to go on sale anytime soon

• Seagate quietly ships 40TB HAMR drives, setting the pace for the next storage next
• Mozaic HAMR tech crams 4TB per platter, promising massive boosts in storage efficiency
• Data center expansion will dictate how fast these record-breaking 40TB drives hit the mainstream

At the recent Seagate’s Investor and Analyst Conference, the company revealed it has delivered limited units of its new 40TB hard drives based on its Mozaic HAMR platform.

These 40TB drives use Heat-Assisted Magnetic Recording (HAMR) to achieve 4TB per platter across ten platters, marking a shift toward Seagate’s Mozaic 4+ platform.

While these are not yet broadly available, full-scale production is slated to begin in the first half of 2026 following extensive customer qualification testing.

Full-scale production to commence next year

“We have shipped limited 40 terabyte engineering samples to our customer already. We do plan to initiate quals next quarter, and ...