Toshiba Electronics Europe GmbH announced that Toshiba Electronic Devices & Storage Corporation (Toshiba) has become the first in the storage industry to verify 12-disk stacking technology for high-capacity hard disk drives (HDDs).

The company revealed that, by combining this achievement with Microwave-Assisted Magnetic Recording (MAMR) technology, it aims to introduce 40TB-class 3.5-inch HDDs for data centers by 2027.

This 12-disk stacking technology uses advanced design and analysis developed by Toshiba to create thinner and more compact products. It adds two disks to the standard 10-disk, 3.5-inch structure used in Toshiba’s nearline HDDs.

Key advancements include:
• Development of new dedicated parts in the stack
• Replacement of aluminum substrate with a glass substrate for greater durability and thinner designs

These innovations enhance mechanical stability, improve in-plane accuracy, increase density, and boost overall reliability.

As data generation continues to surge with the rise of cloud services, streaming platforms, generative AI, and data science, Toshiba is working to expand storage capacities.

The company is also investigating the use of 12-disk stacking with next-generation Heat Assisted Magnetic Recording (HAMR) technology. The goal is to deliver higher-capacity HDDs that meet growing data center demands while reducing total cost of ownership (TCO) for customers.

Toshiba’s 12-disk stacking technology will be showcased at the IDEMA Symposium on October 17, 2025, in Kawasaki, Japan.

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