Toshiba&#zero39;s HDD Tech Roadmap: A Mixture of SMR, MAMR, TDMR, and HAMR

In an interview launched this week with Blocks & Information Toshiba stated the corporate will depend on a mixture of laborious disk applied sciences to additional improve disk capability. Along with the applied sciences for Two-Dimensional Magnetic Recording (TDMR) and Layered Magnetic Recording (SMR) of the present technology, the corporate will use each microwave-assisted magnetic recording (MAMR) and heat-assisted magnetic recording (HAMR) for future drives. Toshiba's short-term growth plans, that are already ready for the primary 16 TB TDMR drives, name for the introduction of SMR and MAMR. In the long run, HAMR is now being launched for additional capability will increase.

Showa Denko, Toshiba's provider of laborious disk media, introduced earlier this 12 months that the corporate would provide laborious disk drives with MAMR know-how. Toshiba has since confirmed his plans to make use of MAMR on this week's interview, however in one other twist, the corporate additionally discovered that a few of its excessive capability MAMR laborious drives may even use shingling.

"MAMR is getting used to extend each discrete monitor (CMR) and shingled monitor (SMR) recording capabilities," stated Scott Wright, head of HDD advertising at Toshiba America Digital Parts.

Total, it's no secret that Toshiba has been engaged on disks with SMR know-how for years . Nonetheless, in contrast to its opponents, the corporate nonetheless doesn’t must roll out industrial SMR laborious drives, so these new MAMR + SMR drives can be the corporate's first industrial SMR implementation. After all, SMR introduces some new tradeoffs in efficiency because the read-modify-write cycle is launched by chained tracks. Nonetheless, for high-capacity laborious drives, this nonetheless is sensible as a result of drive suppliers can improve their capability with out having to change to a brand new type of media.

Toshiba's MAMR-based HDDs will start sampling this 12 months. And with knowledge heart operators needing a couple of quarters to validate the brand new drives, their MAMR drives ought to go into manufacturing by 2020.

Trying additional, Toshiba has additionally stated that ultimately, it must use HAMR, largely because of the larger scalability of the know-how.

"Theoretically, MAMR doesn’t advance the long-term areal density so far as HAMR can. MAMR is definitely the following step. It is extremely possible that HAMR will improve the realm density sooner or later. "

With the introduction of MAMR for nearline laborious drives from 2019 to 2020, Toshiba and Western Digital can proceed to make use of laborious drives just like these used as we speak. In distinction, Seagate will skip MAMR and use HAMR with new laborious drives.

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Supply: Blocks & Information

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