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

– Aim for early commercialization of large-capacity Nearline hard drives over 30TB – TOKYO, Jan. 13, 2022 /PRNewswire/ — Toshiba Group (“Toshiba”) announced on Dec. 27, 2021, the world’s first demonstration[1] improved hard drive recording performance with Microwave Assisted Switching-Microwave Assisted Magnetic Recording (MAS-MAMR), a next-generation magnetic recording technology. The demonstration confirms that the technology offers substantial storage capacity gains, and Toshiba is now aiming to rapidly bring to market near-line hard drives with capacities greater than 30TB. increases the recording density of the hard disk. In 2021, the company began shipping 18TB hard drives that apply Flux Control MAMR (FC-MAMR™)[2], which uses torque oscillators to facilitate recording. MAS-MAMR is expected to improve recording density beyond that of FC-MAMR™ by locally exposing microwaves to recording media. However, this has not proven to be possible in practice until the recent demonstration. To prove the fundamental superiority of MAS-MAMR, Toshiba promoted its development with Showa Denko KK (SDK), a manufacturer of HDD carriers, and TDK Corporation (TDK), a manufacturer of HDD heads. This three-way cooperation recently paid off in demonstrating the improved recording performance of MAS-MAMR. Toshiba will announce details of the new torque oscillator and its oscillation characteristics at the joint MMM-INTERMAG 2022 conference, an international conference scheduled for January 10-14, 2022. information infrastructure supporting digitization and digital transformation , and is now more important than ever due to the COVID-19 pandemic. The continued demand for storage is at an explosive rate, and the market for high-capacity near-line hard drives, the workhorses of cloud-scale and traditional data centers, is expected to reach US$17.5 billion in 2025.[3]. This changing need for storage devices is also fueling the demand for further increases in hard drive capacity. Any attempt to increase the recording density of a hard drive must balance a trilemma of three conflicting goals: to miniaturize the magnetic grains on the recording medium; produce thermally stable magnetic grains; and ensure sufficient recording performance. The recording medium is covered with a layer of fine magnetic grains which retain information according to the direction of their magnetization. Although the recording density can be improved by miniaturizing the recording bit on the recording medium, this requires even smaller magnetic grains, which reduces the thermal stability of their magnetization. Loss of thermal stability can lead to data loss. Increasing thermal stability with increasing recording density requires a material with higher “coercivity” that can maintain magnetization. However, higher coercivity makes it difficult for the recording head to generate the sufficient magnetic field for recording. To overcome this, next-generation magnetic recording technology is needed in which recording is assisted by external energy. Progress is being made in the R&D of next-generation magnetic recording technology to overcome this trilemma. While MAS-MAMR to assist microwave utilization should improve recording density significantly in theory, confirmation of the effect of microwave-assisted switching (MAS-MAMR effect) on operating conditions Recording and improved recording performance with MAS-MAMR have not yet been demonstrated. Technology Features Toshiba invented a “Bi-Oscillation Type Spin Couple Oscillator (Dual FGL STO) Device” which radiates microwaves through a two-layer field-generating layer. The “dual FGL STO” generates microwaves efficiently, with less current and on focused points. Embedded in a recording head, it can improve recording performance with MAS-MAMR. As part of the MAS-MAMR demonstration work, TDK developed new recording heads equipped with the STO, SDK developed new recording media, and Toshiba confirmed stable STO oscillation in the new recording heads . Subsequently, Toshiba confirmed the MAS-MAMR effect by combining the newly developed STOs, recording heads and media and, for the first time in the world, demonstrated approximately 6 dB improvement in the performance of registration with MAS-MAMR.[4]. This technology realizes large-capacity hard disk drives over 30TB. Through the demonstration, MAS-MAMR has taken a big step forward as a practical next-generation magnetic recording technology that can greatly improve the density recording. Future Prospects Toshiba now aims to rapidly bring to market Nearline hard drives larger than 30 TB with MAS-MAMR technology. The company will continue to develop MAMR technologies (FC-MAMR™ and MAS-MAMR) and expand the capacity of near-line hard drives. Toshiba will also continue to develop TAMR (Thermal Assisted Magnetic Recording) technology in parallel to meet a wide range of storage needs. Toshiba Group Research News: For more information on Toshiba’s storage product line, please visit:

[1] Toshiba Research, as of December 24, 2021Actual 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. “Hard Drive Market Trend (Annual)”, December 2021

[4] Evaluate the crush characteristic. * Information contained herein, including product prices and specifications, service content and contact information, is current and believed to be accurate as of the date of announcement, but is subject to change without 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 promoting and supporting the sales and marketing of Toshiba hard drives and Toshiba external hard drives in Taiwan, China and countries around the world. South East Asia. TET is the best partner for enterprise servers, storage and laptops, and its mission is to offer the best service and the best products embodying the highest quality and the most advanced technology. For more information, please visit: About Toshiba Electronics Asia (Singapore) Toshiba Electronics Asia (Singapore) ( “TEA”) is under Toshiba Semiconductor & Storage Products Company, a subsidiary of Toshiba Corporation. TEA was founded in 1990 and is responsible for sales, marketing and service for Toshiba’s wide range of storage solutions in Asia Pacific, 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 offer the best services and products that embody the highest quality and cutting-edge technology. To learn more about TEA, visit:

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