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Tuesday, February 20, 2018
Samsung Electronics Begins Mass Production of 30.72TB SSD

Samsung has begun mass producing the industry's largest capacity Serial Attached SCSI (SAS) solid state drive (SSD) - the PM1643 - for use in enterprise storage systems.

Leveraging Samsung's latest 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.

This high capacity 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 mere 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 reached the new capacity and performance enhancements through technology progressions in the design of its controller, DRAM packaging and associated software. Included in these advancements is an 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 10 4GB TSV DRAM packages, totaling 40GB of DRAM. This marks the first time that TSV-applied DRAM has been used in an SSD.

The SSD is also featuring software that supports metadata protection as well as data retention and recovery from sudden power failures, and an error correction code (ECC) algorithm to ensure high reliability and minimal storage maintenance. Furthermore, the SSD provides an endurance level of one full drive write per day (DWPD), which translates into writing 30.72TB of data every day over the five-year warranty period without failure. The PM1643 also offers a mean time between failures (MTBF) of two million hours.

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.

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