HDD Manufacturers Turn to New Technologies to Drive Capacity

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As the storage wars involving SSDs and HDDs drag on, SSDs have seemed to be gaining a decisive higher hand. Corporations like Toshiba, Seagate, and Western Electronic have revealed off their following-generation systems like Energy-Assisted Magnetic Recording (EAMR, WD) and Microwave-Assisted Magnetic Recording (HAMR, Seagate), but both providers seem to be to be owning issues transport drives in important quantities.

1 of the important queries facing the magnetic spinning sector is whether or not to push forward in direction of 10-platter models. Individuals of you who very last looked up from your SSD overall performance graphs when 5-platter drives have been all the rage may be astonished, but we’re by now up to 9 platters. StorageNewsletter writes:

In current weeks, though, provide chain chatter has signaled that 10-platter models may emerge faster than originally prepared, with some info pointing to 10-disk models to assist 20TB CMR capacities as a possibility. Granted, these plans could adjust, based on pre-MAMR/HAMR areal density achievements, and systems these as Western Digital’s EAMR method may be used to raise generate capacities more than the following gen to obviate the need for a tenth disk.

Ultra-thin substrates of considerably less than .5mm are also below investigation. The new glass platters Seagate is adopting as part of its shift to HAMR technology are thinner than aluminum, and consequently theoretically let space to squeeze another platter in. Theoretically, even 11-12 platter models could be feasible. Statements from the glass substrate manufacturer Hoya again up this desire in thinner substrates.

The reason there is desire in the greater platter counts is that HDD producers can nevertheless generate complete capacities greater, even if systems like MAMR, HAMR, and EAMR all fail to materialize as quickly as originally expected. There would seem to be some doubt as to whether or not Seagate and WD will strike their aggressive capability ramps. COVID-19 has finished minor to enable matters on this entrance.

A 12-platter generate with 2TB platters would have an unformatted capability of 24TB — considerably much larger than any generate currently obtainable. StorageNewsletter initially considered 24TB drives would be in-current market by 2022, but the business is a little bit considerably less specified of what types of systems the spinning disk producers will use to get there. These could be drives with greater platter counts and regular technology, or HAMR / EAMR goods with much less platters and greater areal densities.

As for SSDs, investigation is continuing into Penta Amount Mobile (PLC, 5-little bit) NAND. Even though it would have even lessen overall performance and considerably less endurance than its QLC counterpart, there are innovative storage principles like Zoned Title Spaces for SSDs that are meant to minimize publish amplification and could let PLC drives to further more chew into HDD’s capability benefit.

Credit rating: Patrick Lindenberg on Unsplash

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