Samsung Announces Production Of the PM1643, The Industry's Largest Capacity SAS SSD

Image Source Samsung

Image Source Samsung

The drive uses 32 1TB NAND flash packages, each of which contains 16 stacked layers of 512Gb V-NAND chips.

Still, such eye-catching products can often force more mainstream storage prices down - although storage prices do vary wildly, thanks to a particularly volatile supply chain. The drive has a 12GBps SAS interface with random read and write speeds of up to 400,000 IOPS (Input/output operations per second) and 50,000 IOPS as well as sequential read and write speeds of up to 2,100MBps and 1,700MBps, respectively.

Samsung has started mass producing the PM1643 solid state drive (SSD) with 30.72 terabyte (TB) storage space, touted as the world's largest capacity Serial Attached SCSI (SAS) SSD. The company said there's enough room on this device to store around 5700 full HD movies at 5GB each. Sequential read and write speeds of up to 2100 MBPS and 1700 MBPS respectively were recorded in tests done by Samsung.

Not satisfied with a mere capacity increase, Samsung has also improved levels of performance with the PM1643. Samsung's PM1643 SSD is the successor to 15.36TB series, introduced by the company in March 2016.

Samsung is utilizing several technology progressions to achieve this level of capacity and performance, including controller design, DRAM packaging and associated software/firmware. Over the course of this year, Samsung will be adding 15.36TB, 7.68TB, 3.84TB, 1.92TB, 960GB and 800GB versions of this drive to their line up for enterprise. The advanced controller integrates nine controllers from previous high-capacity SSDs into a single package. For example, Samsung's own 960 Pro SSD boasts 3,500MB/s reads and 2,100MB/s writes. For caching, TSV technology is used to interconnect 8Gb DDR4 chips, creating 10x 4GB TSV DRAM packages, totalling 40GB of DRAM.

Importantly Samsung's error correction code (ECC) algorithm ensures high reliability and minimal storage maintenance.

Coming to the software front, the PM1643 supports metadata protection. "The PM1643 also offers a mean time between failures (MTBF) of two million hours", the press statement reads. This new drive offers nearly double of what it had launched about two years ago, a 15.36TB drive which at its time was the highest capacity SSD.

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