Although CES 2022 is technically nonetheless a few weeks away, CES-related bulletins are already beginning to roll in. Amongst these are Samsung, who’s saying their first PCIe 5.0 SSD for servers, the PM1743. Primarily based round a brand new, unnamed PCIe controller, Samsung’s newest server SSD is pairing that with the corporate’s present (sixth) era V-NAND. Primarily based on their revealed specs, Samsung is touting upwards of 70-90% higher efficiency over their previous-generation drive based mostly on the workload. And tying in with CES in a few weeks, the brand new drive has already been awarded a CES 2022 Innovation Award.


At a excessive degree, the PM1743 is the successor to Samsung’s present PM1733 enterprise SSD. Whereas the prevailing drive relies round a PCIe 4.0 controller and Samsung’s 96L fifth-generation V-NAND, the PM1743 bumps this as much as PCIe 5.0 and 128L sixth-generation V-NAND as a substitute. Given the overall nature of at this time’s announcement, the corporate isn’t providing detailed technical specs on the drive’s structure, however between the NAND and controller enhancements, they would appear to largely have the ability to sustain with the extra bandwidth afforded by the transfer to PCIe 5.0.

On paper, the PCie 5.0 x4 hyperlink the drive makes use of can attain bandwidth charges as excessive as 15.76GB/sec. For the PM1743, in flip, Samsung is claiming peak sequential learn charges of 13GB/second, and peak sequential write charges of 6.6GB/sec (presumably to the drive’s SLC cache). This provides as much as 86% larger peak learn speeds and 89% larger peak write speeds than the PM1733. Or to place that when it comes to IOPS, Samsung is claiming that the brand new drive will have the ability to hit 2.5M IOPS on random reads, and 250K IOPS on random writes.

Samsung Enterprise SSD Specs


Type Issue U.2 or E3.S U.2
Interface PCIe 5.0 x4, NVMe PCIe 4.0 x4, NVMe
Controller Unnamed Samsung PCIe 5.0 Samsung S4LR014 PCIe 4.0
NAND Flash Samsung 128L TLC? Samsing 96L TLC
Sequential Learn 13000 MB/s 7000 MB/s
Sequential Write 6600 MB/s 3500 MB/s
Random Learn

2500k 1500k
Random Write

250k 135k
Energy Lively 30 W? 20 W
Idle ? 8.5 W
Write Endurance ? 28 PBW

1.0 DWPD for five Years

The up to date Samsung controller can be embedding its personal safety processor and root of belief. Samsung’s announcement is gentle on the main points, however at a excessive degree, the corporate is doubling down on safety by giving the drive a level of safety management unbiased of the host server.

The corporate can be touting these updates as having improved the power effectivity of the PM1743 by 30% over the PM1733, bringing it to 608MB/sec/watt. Provided that information switch charges have improved by upwards of 90% whereas energy effectivity has solely improved by 30%, it seems to be just like the PM1743 can have the next lively energy utilization price than its predecessor. Doing a little serviette math in opposition to the PM1733, which has a printed determine of 20W, would put the lively energy of the PM1743 at round 30W.

In the meantime, Samsung’s press launch additionally confirms that the corporate has been working with Intel to validate the brand new drive. Samsung doesn’t go into any additional particulars, however with Alder Lake (12th gen Core) already delivery now as the primary mass market PCIe 5.0-capable platform, Samsung has presumably been testing in opposition to that, in addition to the forthcoming Sapphire Rapids (next-gen Xeon) platform.

New for this era of SSDs, Samsung might be providing the PM1743 in two kind elements. The primary would be the conventional 2.5-inch U.2 kind issue. In the meantime, becoming a member of U.2 might be E3.S, a more moderen 3-inch enterprise and information middle kind issue that’s designed to be barely bigger than U.2 drives whereas incorporating a connector that may deal with as much as 16 lanes of PCIe.  SSDs in fact received’t use that many lanes, nevertheless it’s a kind issue that each drive and system distributors have been pushing for, making it the front-runner because the eventual successor to U.2. Primarily based on final 12 months’s publication of the E3 2.0 specification, we had been anticipating E3.S drives to land in early 2022, so Samsung is true on time.

Lastly, the PM1743 might be supplied in capacities starting from 1.92TB to fifteen.36TB, the identical capacities the PM1733 is accessible at at this time. So though there isn’t a capability improve to talk of on a single drive degree, since E3.S is half the thickness of a conventional 15mm U.2 drive, Samsung is touting the general density enhancements the brand new drive will afford. Basically, if a server makes use of E3.S, it will likely be capable of accommodate twice as many drives (and thus twice as a lot storage capability) as a U.2 configuration.

The PM1743 is sampling now, and in keeping with Samsung mass manufacturing will start within the first quarter of subsequent 12 months.


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