Toshiba Demos 30TB Storage Capacity in Nearline HDDs Using Advanced Recording Technologies

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Toshiba Electronic Devices & Storage Corporation has successfully demonstrated hard disk drives (HDDs) with storage capacities exceeding 30 terabytes, utilizing two advanced recording technologies: Heat Assisted Magnetic Recording (HAMR) and Microwave Assisted Magnetic Recording (MAMR). These technologies mark significant progress in the development of next-generation high-capacity HDDs aimed at commercial applications. HAMR technology enhances magnetic recording by heating the disk area locally with near-field light, facilitating the recording of data on high-density tracks. Toshiba has achieved a capacity of 32 terabytes using HAMR, spread across 10 disks and incorporating Shingled Magnetic Recording (SMR) technology. Toshiba anticipates the commencement of shipping test sample HDDs employing HAMR technology by 2025.

In parallel, MAMR technology boosts magnetic recording capabilities through the use of microwaves, which helps in aligning magnetic particles during the recording process. Toshiba pioneered the demonstration of MAMR's effectiveness and launched the first generation of MAMR-based drives into mass production in 2021. The latest achievement in MAMR technology has reached a capacity of 31 terabytes, realized by stacking 11 disks and enhancing the signal processing in conjunction with SMR technology.

The advancements in both HAMR and MAMR technologies have been made possible through extensive collaborative efforts involving Resonac Corporation, a manufacturer of HDD media, and TDK Corporation, a producer of HDD heads. Toshiba and its partners are dedicated to further development of these technologies, aiming to cater to the escalating storage needs of cloud services and data centers.


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