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Micron Readies 3D QLC NAND-Based Datacenter SSDs for Nearline Storage

Micron has revealed plans to launch datacenter-class SSDs based mostly on 3D QLC NAND reminiscence in an effort to compete within the nearline storage market. Briefly introduced at a convention final week, the corporate is taking purpose at functions that presently use 7200 RPM HDDs, using which is more and more widespread in nearline storage. The producer didn’t reveal any extra particulars concerning the upcoming drive, however demonstrated a wafer with QLC 3D NAND dies.

Micron disclosed its plans regarding own-brand SSDs in 2018 on the A3 Technology Live convention in London final week. Among different issues, the corporate intends to introduce a QLC-based SSD with a SATA interface for cloud datacenters this 12 months. The drive will probably be positioned under the prevailing 5200-series SSDs and will probably be aimed primarily at learn intensive functions (or the so-called WORM — write as soon as, learn many workloads). The QLC-based SSD could have a characteristic set geared toward hyperscale datacenters and can compete for the place presently occupied by high-capacity 7200 RPM HDDs, experiences The Register.

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The producer didn’t disclose capability of the upcoming QLC-based drives and didn’t reveal whether or not they are going to characteristic in-house developed controllers with enhanced ECC capabilities (developed utilizing IP and engineers the corporate received when it acquired Tidal Systems a number of years in the past), or third-party enterprise-grade controllers. The firm demonstrated a wafer carrying 64 GB (i.e., 512 Gb) 3D QLC NAND chips, indicating that it has the brand new flash reminiscence at hand already.

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QLC flash reminiscence shops 4 bits per cell, thus providing a 33% increased bit density and decrease per-bit value in comparison with TLC flash generally used for high-capacity SSDs right this moment. 3D QLC NAND has been formally introduced by Toshiba and Western Digital thus far, however there aren’t any doubts that every one producers of NAND are engaged on QLC chips too. Increasing the bit density of NAND flash normally comes at the price of endurance, however Toshiba final 12 months stated that it had managed to extend endurance of its 3D QLC NAND flash to 1000 program/erase cycles by utilizing a stronger ECC mechanism, which is similar to endurance of 3D TLC NAND.

QLC’s increased bit densities in addition to decrease per-bit prices are anticipated to scale back per-GB costs of high-capacity SSDs additional and allow them to compete towards present modern HDDs, such HGST’s Ultrastar with 12 or 14 TB capability. Two apparent benefits that high-capacity QLC-based SSDs could have when in comparison with arduous drives are decrease latencies and better storage densities. Meanwhile, per-GB prices of HDDs will stay decrease when in comparison with NAND flash for years to come back — that is what producers of each HDDs and flash reminiscence agree on. So I might anticipate to see that these upcoming 3D QLC NAND-based SSDs will sit between high-capacity HDDs and high-performance SSDs, occupying a tier of their very own in hyperscale datacenters.

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Sources: The Register, A3 Communications Technology Live


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