Western Digital Ships 40TB Drives, Targets 50TB HAMR by 2027

Western Digital is ramping up its hard drive production to meet surging demand from cloud and AI data centers. This shift matters because it signals that high-capacity storage remains critical for the companies building the next generation of computing infrastructure. The vendor is actively negotiating long-term supply agreements that extend through 2031, securing its position in the core storage market.

Vendor ramps production for cloud and AI infrastructure demand

The company has officially begun shipping its 40TB ePMR mechanical hard drives to two specific customers. This milestone validates the current generation of enterprise storage technology as a reliable solution for large-scale data repositories. Western Digital is simultaneously testing high bandwidth drives with five separate clients to explore newer performance architectures.

Specifications

• ePMR HDD Capacity: 40TB
• HAMR HDD First Gen Release: 44TB in CY2027H1
• HAMR HDD Next Gen Release: 50TB in CY2027H2
• HBD Customer Trials: 5 customers
• Shipment Capacity Growth: +25% YoY or higher

Future product roadmaps reveal aggressive capacity targets for the coming years. The first generation of HAMR hard drives will hit the market in the first half of 2027 with 44TB of storage. Western Digital plans to follow this with 50TB HAMR models in the second half of that same year.

Financial projections indicate robust growth for the storage division over the next few years. The company expects shipment capacity to increase by at least 25% year over year. Unit costs per terabyte are projected to drop by approximately 10% annually, making high-capacity storage more economical for enterprise buyers.

We looked at the last Hard Disk Drives update, several of the same balance and stability themes came up. Western Digital continues to prioritize long-term customer relationships and steady capacity expansion over rapid, speculative releases.

Western Digital is currently executing a dual strategy of shipping 40TB drives while preparing 44TB and 50TB HAMR releases for 2027. This roadmap ensures a steady supply of high-capacity storage for cloud providers and AI infrastructure builders through the end of the decade.