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Samsung Teases 256 TB SSD: 3D QLC NAND at Its Best
by Anton Shilov on August 11, 2023 8:05 AM EST

    Posted in
    Storage
    SSDs
    Samsung
    NAND
    V-NAND
    3D QLC

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Samsung teased the industry's first 256 TB solid-state drive at the
Flash Memory Summit 2023. The new drive features unprecedented storage
density and is aimed primarily at hyper-scale data centers where
storage density and reduced power consumption matter the most.

Samsung's 256 TB SSD is based on 3D QLC NAND memory and probably uses
innovative packaging to cram multiple 3D QLC NAND devices into stacks.
The company does not disclose which form factor the drive uses. Still,
because the unit is aimed mainly at hyper scalers, we expect Samsung
to offer them in one of the emerging ESDFF form factors or Samsung's
proprietary NGSFF form factor. For now, the only thing that Samsung
discloses about its 256 TB SSD is that it is several times more energy
efficient than existing drives that carry 32 TB of raw NAND.

"Compared to stacking eight 32 TB SSDs, one 256 TB SSD consumes
approximately seven times less power, despite storing the same amount
of data," a statement by Samsung reads.

In addition to teasing its 256 TB SSD, Samsung formally announced its
next-generation datacenter PM9A3a family of drives with a PCIe 5.0 x4
interface that is expected to offer serious performance and high power
efficiency.

Samsung says that its new PM9A3a SSDs increase sequential read
performance by up to 2.3 times (i.e., to 14.95 GB/s) and random write
performance by more than 2x compared to the previous generation PM9A3,
which uses a PCIe 4.0 x4 interface. In addition, these new drives
promise a 60% power efficiency improvement (presumably compared to
predecessors) and enhanced Telemetry and Debug functions.

Samsung's PM9A3a SSDs will be available in various form factors in the
first half of 2024, featuring capacities from 3.84 TB all the way up
to 30.72 TB.