Toshiba Electronic Devices & Storage Corporation (Toshiba) is first in the storage industry to verify 12-disk stacking technology for high-capacity hard disk drives (HDDs). By combining this achievement with Microwave-Assisted Magnetic Recording (MAMR) technology, the company aims to introduce 40 TB-class 3.5-inch HDDs for data centers to the market in 2027.

This revolutionary stacking technology leverages advanced design and analysis technologies Toshiba has cultivated in developing thin, compact products, and adds two disks to the standard 10-disk, 3.5-inch disk track that the company uses in its nearline HDDs. Key advances include the development of new dedicated parts in the stack, and replacement of the current aluminium substrate medium with a glass substrate that offers greater durability and allows thinner designs. These advances deliver improved mechanical stability and in-plane accuracy, higher density and greater reliability.