Pathway To 30 TB HDD using Proprietary Technologies, FC-MAMR, and MAS-MAMR, will Fuel Areal Density Growth.
KAWASAKI, Japan, Feb. 14, 2022 – Toshiba Corporation held an investor relations event in Tokyo, Japan. During Toshiba Electronic Devices & Storage Corporation‘s presentation, Mr. Hiroyuki Sato, President & CEO of the company, unveiled a descriptive roadmap of Toshiba’s next-generation Nearline HDDs. Data generation continues to grow at double-digit rates every year, and demand from cloud companies to store the burgeoning data is driving the need for higher-capacity HDDs. To meet this surging demand, Toshiba plans to leverage its proprietary recording technologies, FC-MAMR (Flux-Controlled – Microwave-Assisted Magnetic Recording), MAS-MAMR (Microwave Assisted Switching – Microwave-Assisted Magnetic Recording), and Disk Stacking technology to lift Nearline 30 TB HDD capacities by FY2023, and greater capacities beyond.
“Toshiba continues to work closely with the cloud companies to understand their exact capacity and performance requirements, and the ability to utilize our next-generation technologies will be key to meeting our customers’ needs,” said Yuichi Nanno, Division President, Storage Products Division, Toshiba Electronics Components Taiwan Corporation. “Many years of close collaboration work with our key component suppliers is leading to impactful technology breakthroughs to achieve higher capacities, which ultimately reduces TCO (total cost of ownership) of our Nearline HDDs.”
Conventional HDDs use one writer and one reader per head whereas MG08 series incorporates TDMR technology that uses two readers per head. With TDMR two dimensional equalizer processes data read from two readers at the same time in order to improve the S/N ratio of the read signal. Thus making it possible to increase the recording density. In contrast, FC-MAMR uses a microwave-assisted recording technique as a principle of perpendicular magnetic recording. FC-MAMR mainly directs more magnetic fields flowing from the magnetic recording pole toward the recording media to increase its recording capacity.
The key to increasing the HDD capacity lies in increasing the amount of data that can be written and read per unit area.
MAS-MAMR – Microwave Assisted Magnetic Recording
Toshiba announced on December 27th, 2021, the world’s first demonstration of HDD recording performance improvement with Microwave-Assisted Switching-Microwave Assisted Magnetic Recording (MAS-MAMR), a next-generation magnetic recording technology. The demonstration confirms that the technology delivers substantial storage capacity gains, and Toshiba now aims to realize early commercialization of nearline HDDs with capacities exceeding 30TB.
Toshiba is placing considerable R&D effort on MAMR, a breakthrough technology that boosts HDD recording density. In 2021, the company started shipment of 18TB HDDs that apply Flux Control MAMR (FC-MAMR™), which uses spin torque oscillators to assist recording. MAS-MAMR is expected to improve recording density beyond that of FC-MAMR™ by locally exposing microwave to recording media. However, this was not shown to be possible in practice until the recent demonstration.
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