Toshiba Electronic Devices & Storage Corporation has become the first in the storage industry to verify 12-disk stacking technology for hard disk drives , marking a key milestone toward developing next-generation 40TB-class 3.5-inch HDDs for data centers by 2027. Building on its existing 10-disk nearline HDD platform, Toshiba’s new design integrates Microwave-Assisted Magnetic Recording (MAMR) technology and leverages its expertise in compact, high-precision engineering.
The innovation replaces traditional aluminum substrates with glass substrates, enabling thinner disks with improved durability, mechanical stability, and in-plane accuracy all contributing to higher data density and reliability. As global data generation continues to surge due to the growth of cloud computing, streaming, generative AI, and data science, the company is also exploring the application of this 12-disk stacking approach with Heat-Assisted Magnetic Recording (HAMR) to achieve even greater storage capacities.
Toshiba’s 12-disk stacking technology will be showcased at the IDEMA Symposium on October 17, 2025, in Kawasaki, Japan. This advancement underscores Toshiba’s commitment to delivering scalable, high-capacity HDD solutions designed to meet the growing demands of modern data centers while optimizing total cost of ownership (TCO) for enterprise customers.
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