Feed: AnandTech
Feed Link: https://www.anandtech.com
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Title: Samsung's 128 TB-Class BM1743 Enterprise SSD Displayed at FMS 2024

Date: Tue, 13 Aug 2024 14:00:00 EDT
Link: https://www.anandtech.com/show/21526/samsungs...

Samsung had quietly launched its BM1743 enterprise QLC SSD last month with a
hefty 61.44 TB SKU. At FMS 2024, the company had the even larger 122.88 TB
version of that SSD on display, alongside a few recorded benchmarking
sessions. Compared to the previous generation, the BM1743 comes with a 4.1x
improvement in I/O performance, improvement in data retention, and a 45%
improvement in power efficiency for sequential writes.

The 128 TB-class QLC SSD boasts of sequential read speeds of 7.5 GBps and
write speeds of 3 GBps. Random reads come in at 1.6 M IOPS, while 16 KB
random writes clock in at 45K IOPS. Based on the quoted random write access
granularity, it appears that Samsung is using a 16 KB indirection unit (IU)
to optimize flash management. This is similar to the strategy adopted by
Solidigm with IUs larger than 4K in their high-capacity SSDs.

A recorded benchmark session on the company's PM9D3a 8-channel Gen 5 SSD was
also on display.

The SSD family is being promoted as a mainstream option for datacenters, and
boasts of sequential reads up to 12 GBps and writes up to 6.8 GBps. Random
reads clock in at 2 M IOPS, and random writes at 400 K IOPS.

Available in multiple form-factors up to 32 TB (M.2 tops out at 2 TB), the
drive's firmware includes optional support for flexible data placement (FDP)
to help address the write amplification aspect.

The PM1753 is the current enterprise SSD flagship in Samsung's lineup. With
support for 16 NAND channels and capacities up to 32 TB, this U.2 / E3.S SSD
has advertised sequential read and write speeds of 14.8 GBps and 11 GBps
respectively. Random reads and writes for 4 KB accesses are listed at 3.4 M
and 600 K IOPS.

Samsung claims a 1.7x performance improvement and a 1.7x power efficiency
improvement over the previous generation (PM1743), making this TLC SSD
suitable for AI servers.

The 9th Gen. V-NAND wafer was also available for viewing, though photography
was prohibited. Mass production of this flash memory began in April 2024.

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