Seagate has announced its next-generation Mozaic 4+ platform, a heat-assisted magnetic recording (HAMR) storage platform that Seagate says is now qualified and in production with two leading hyperscale cloud providers. The company reports the platform supports drive capacities up to 44 TB, with the hyperscaler qualifications reflecting production-scale deployments in hyperscale environments.
Seagate says Mozaic 4+ is the industry’s only HAMR-based storage platform deployed at scale, and notes additional customer qualifications are under way. Seagate also reports it is working along a roadmap from “today’s 4+TB per-disk” toward a “future 10TB per-disk,” which it says would enable hard drive capacities of up to 100 TB.
On the technology side, Seagate says the platform incorporates a next-generation suspension architecture and an enhanced system-on-a-chip to enable “precise recording at higher densities while maintaining enterprise-class reliability.” Seagate also states that each platform generation is designed to deliver continued capacity gains without “disruptive architectural shifts.”
Seagate attributes Mozaic 4+ production-scale HAMR to vertically integrated photonics, stating its “custom-designed and manufactured laser technology” is based on investments in nanophotonic engineering for HAMR components. The company says vertical integration strengthens design control over yield and reliability and improves supply-chain resilience; it also claims this approach shortens qualification timelines and supports predictable manufacturing economics.
For data center use cases, Seagate positions Mozaic 4+ for hyperscalers that need mass-capacity hard drives to store, manage, and reactivate large training datasets, historical archives, and AI-generated content, including large video and other multimodal outputs. Seagate claims per-disk capacity increases can improve capacity per-rack and per-watt to lower total cost of ownership. The company reports that in a one-exabyte deployment, Mozaic improves infrastructure efficiency by approximately 47 percent compared to standard 30 TB deployments, reducing required data center footprint by about 100 square feet and lowering annual energy consumption by roughly 0.8 million kilowatt-hours; it notes the calculation is based on internal documentation from product testing.
Seagate says Mozaic 4+ hard drives supporting capacities up to 44 TB are now shipping in volume to two leading hyperscale cloud providers, with broader availability planned as production continues to scale.
Source: Seagate
