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Toshiba Achieves World’s First Demonstration of Substantial Improvements in HDD Recording Performance with Microwave Assisted Switching – Microwave Assisted Magnetic Recording (MAS-MAMR)

Toshiba Achieves World's First Demonstration of Substantial Improvements in HDD Recording Performance with Microwave Assisted Switching - Microwave Assisted Magnetic Recording (MAS-MAMR)
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– Aims for early marketing of large-capacity hard disk drives over 30 TB – TOKYO, January 13, 2022 /PRNewswire / – Toshiba Group (“Toshiba”) announced December 27, 2021, the world’s first demo[1] Improved HDD recording performance through Microwave Assisted Switching Magnetic Recording (MAS-MAMR), a next-generation magnetic recording technology. The demo confirms that this technology delivers significant gains in storage capacity, and Toshiba is now aiming for early commercialization of nearby hard drives with capacities in excess of 30TB.

Toshiba is making great efforts in research and development on MAMR, an advanced technology that enhances the density of hard disk recording. In 2021, the company began shipping 18TB hard drives that implement Flux Control MAMR (FC-MAMR™)[2], which uses torque oscillators to aid in recording. MAS-MAMR is expected to improve recording density beyond that of FC-MAMR™ by locally microwave exposure of the recording media. However, it was not demonstrated that this was feasible until the most recent demonstration.

To demonstrate the fundamental superiority of the MAS-MAMR, Toshiba has strengthened its development with Showa Denko KK (SDK), manufacturer of medium HDD, and TDK Corporation (TDK), manufacturer of hard disk heads. This three-way collaboration recently bore fruit in demonstrating the improved recording performance of MAS-MAMR.

Toshiba will announce details of the newly developed torque oscillator and oscillation characteristics at the joint MMM-INTERMAG 2022 conference, the international conference scheduled for January 10-14, 2022.

Development Background Digital data storage in data centers is one of the pillars of modern information infrastructure that supports digitization and digital transformation, and is now more important than ever due to the COVID-19 pandemic.

The continuous demand for storage is growing at a rapid pace, and the market for high-capacity hard disk drives, which are the business units of both traditional data centers and cloud computing, is expected to grow to US$17.5 billion in 2025.[3]. These evolving needs of storage devices are also driving the demand for increased capacity in hard drives.

Any attempt to increase the recording density of a hard drive must reconcile three conflicting goals: minimizing the magnetic grain on the recording medium; Realization of thermally stable magnetic grain; and ensuring adequate recording performance. The recording medium is covered with a layer of fine magnetic grains that retain information according to the direction of its magnetization. While the recording density can be improved by miniaturizing the recording bit on the recording media, this requires smaller magnetic grains, which reduce the thermal stability of their magnets. Loss of thermal stability may result in data loss.

Increasing thermal stability with increasing recording density requires a material with a higher “coercing force” that can maintain magnetization. However, the high coercivity makes it difficult for the recording head to generate a sufficient magnetic field for recording. Overcoming this requires next-generation magnetic recording technology in which external power assists the recording.

Advances are being made in the research and development of next-generation magnetic recording technology to overcome this triple problem. While MAS-MAMR would be expected to aid the use of microwaves to significantly improve recording density in theory, confirmation of the effect of microwave-assisted switching (MAS-MAMR effect) on recording condition and improved recording performance with MAS-MAMR has not been demonstrated.

Technology Features Toshiba has created a “Double FGL STO” torque oscillator (Double FGL STO) radiating layer microwave ovens with a two-layer field generation. The “Dual FGL STO” device generates microwaves efficiently, with less current and more concentrated spots. Built in recording head, it can improve recording performance with MAS-MAMR.

In the framework of demonstrating MAS-MAMR, TDK developed new recording heads with STO, SDK developed new recording media, and Toshiba confirmed the stable oscillation of STOs in new recording heads.

Subsequently, Toshiba confirmed the effect of MAS-MAMR by combining its newly developed STO with recording heads and media, and for the first time in the world demonstrated an approximately 6 dB improvement in recording performance with the MAS-MAMR[4]. This technology makes it possible to manufacture large capacity hard disk drives of more than 30 TB. With its demonstration, MAS-MAMR has taken a major step forward as a practical next-generation magnetic recording technology that can significantly improve recording density.

Future Prospects Toshiba now aims to achieve early commercialization of near-disk hard drives with a capacity of more than 30 TB using MAS-MAMR technology. The company will continue to develop MAMR technologies (FC-MAMR™ and MAS-MAMR) and expand the capacity of nearby hard drives. Toshiba will also continue to develop heat-assisted magnetic recording (TAMR) technology in parallel to meet a wide range of storage needs.

Toshiba Group Research News: For more information on Toshiba’s line of storage products, please visit: https: / / [1] Toshiba Research, as of December 24, 2021 Actual formatted capacity may vary.

[2] FC-MAMR™: MAMR Flow Control. FC-MAMR™ is a trademark of Toshiba Devices & Storage Corporation.

[3] Source: Techno-System Research Co., Ltd. ”HDD Market Trend (Annual)”, December 2021 [4] Evaluate the overwrite property.

* The information in this document, including product prices, specifications, service content and contact information, is current and believed to be accurate as at the date of the advertisement but is subject to change without prior notice.

* FC-MAMRTM is a trademark of Toshiba Electronic Devices & Storage Corporation.

* Company names, product names, and service names mentioned herein may be trademarks of their respective companies.

About Toshiba Electronic Components Taiwan Corporation (TET) Toshiba Electronic Components Taiwan Corporation is responsible for the promotion, sales, marketing, and support of Toshiba hard drives and Toshiba external hard drives in Taiwan, China and Southeast Asia. TET is the best partner for Enterprise Servers, Storage Devices and Laptops, its mission is to provide the best services and products that embody the highest quality and latest technology. For more information, visit us at: About Toshiba Electronics Asia (Singapore) Toshiba Electronics Asia (Singapore) (“TEA”) Affiliate For Toshiba Semiconductor & Storage Products Company, a subsidiary of Toshiba Corporation. Founded in 1990, TEA is responsible for sales, marketing, and services for Toshiba’s range of large storage solutions in the Asia Pacific region, which includes Canvio portable external hard drives and internal hard drives. TEA is the best partner for consumers and businesses, and its mission is to provide the best services and products that embody the highest quality and cutting edge technology. To learn more about TEA, visit: PWR PWR

(This story has not been edited by the Devdiscourse staff and is automatically generated from a shared feed.)


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