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Samsung releases largest Serial Attached SCSI SSD

by on20 February 2018

Bigger the better

Samsung Electronics announced that it has begun mass producing the industry’s biggest Serial Attached SCSI (SAS) solid state drive (SSD).

Dubbed the PM1643, it is designed for next-generation enterprise storage systems and uses Samsung’s V-NAND technology with 64-layer, 3-bit 512-gigabit (Gb) chips, the 30.72 terabyte (TB) drive delivers twice the capacity and performance of the previous 15.36TB high capacity lineup introduced in March 2016.

The breakthrough was made possible by combining 32 of the new 1TB NAND flash packages, each comprised of 16 stacked layers of 512Gb V-NAND chips. These super-dense 1TB packages allow for approximately 5,700 5-gigabyte (GB), full HD movie files to be stored within a small 2.5-inch storage device.

In addition to the doubled capacity, performance levels have risen significantly and are nearly twice that of Samsung’s previous generation high-capacity SAS SSD. Based on a 12Gb/s SAS interface, the new PM1643 drive features random read and write speeds of up to 400,000 IOPS and 50,000 IOPS, and sequential read and write speeds of up to 2,100MB/s and 1,700 MB/s, respectively. These represent approximately four times the random read performance and three times the sequential read performance of a typical 2.5-inch SATA SSD*.

Samsung Memory Vice president Jaesoo Han said the new gear shatters the enterprise storage capacity barrier, andopening up new horizons for ultra-high capacity storage systems worldwide.

"Samsung will continue to move aggressively in meeting the shifting demand toward SSDs over 10TB and at the same time, accelerating adoption of our trail-blazing storage solutions in a new age of enterprise systems.”

Samsung reached the new capacity and performance enhancements through several technology progressions in the design of its controller, DRAM packaging, and associated software. Included in these advancements is a highly efficient controller architecture that integrates nine controllers from the previous high-capacity SSD lineup into a single package, enabling a greater amount of space within the SSD to be used for storage. The PM1643 drive also applies Through Silicon Via (TSV) technology to interconnect 8Gb DDR4 chips, creating ten 4GB TSV DRAM packages, totalling 40GB of DRAM. This marks the first time that TSV-applied DRAM has been used in an SSD.

Samsung started manufacturing initial quantities of the 30.72TB SSDs in January and plans to expand the lineup later this year – with 15.36TB, 7.68TB, 3.84TB, 1.92TB, 960GB and 800GB versions – to further drive the growth of all-flash-arrays and accelerate the transition from hard disk drives (HDDs) to SSDs in the enterprise market.

 

Last modified on 20 February 2018
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