Seagate Begins Mass Production of Mozaic 4+ HDDs Offering Up to 44TB Capacity

• March 4, 2026

The demand for high-capacity hard disk drives continues to rise, driven largely by the growing requirements of artificial intelligence and data-intensive applications. Seagate Technology has announced it has commenced mass production of its latest family of HDDs, the Mozaic 4+, which incorporate Heat-Assisted Magnetic Recording (HAMR) technology to deliver storage capacities up to 44 terabytes.

Advancing High-Capacity Storage Solutions

With the expansion of AI workloads and large-scale data storage demands, the market for high-capacity hard drives is experiencing significant growth. Seagate’s move to scale mass production of the Mozaic 4+ series aims to meet this market requirement, supporting data centers and enterprises seeking larger and more efficient storage solutions.

The Mozaic 4+ family represents a new chapter in Seagate’s HDD lineup, utilizing HAMR technology to increase the areal density of the drives beyond conventional methods. By applying this advanced approach, these hard drives achieve much higher capacity without substantially increasing the physical size of the device.

High-capacity HDDs like the Mozaic 4+ units now make up a substantial share of revenue for leading storage manufacturers, accounting for approximately 90% of their total sales. This trend reflects the critical role that expanded storage plays in enabling big data analytics, cloud computing, and artificial intelligence applications which demand rapid access to vast datasets.

Seagate’s readiness to produce and deliver these drives at scale reinforces the company’s position as a major supplier in the storage industry, where timely product improvements are essential to meet evolving customer needs.

While specific pricing details and availability were not disclosed, the introduction of the Mozaic 4+ series clearly signals ongoing investment in HDD technology enhancements that balance cost, capacity, and performance for modern data infrastructure.

As AI and other sectors continue to contribute to the growth of the data economy, the arrival of hard drives with capacities up to 44TB offers organizations new options for cost-effective, high-density storage. The Mozaic 4+ line is poised to support the next generation of enterprise storage operations with robust durability and scalable performance.

Seagate starts large-scale shipments of Mozaic 4+ hard drives, delivering up to 44TB to meet rising demand in AI-driven storage markets.