Samsung Squeezes 30TB Into a 2.5-Inch SSD | News & Opinion


These drives are aimed at the enterprise market, but consumer-friendly versions will appear eventually.

Samsung 30TB SSD

SSDs are falling in price slowly, but if you want a large drive then they can still cost a small fortune. For example, Samsung’s latest 4TB 860 Pro SSD appeared in January with a $1,900 price tag. Today, Samsung revealed the world’s largest SSD with a capacity of 30.72TB. The price isn’t known yet.

As you’ve probably guessed, a 30TB SSD in 2018 isn’t aimed at consumers. This is an enterprise 2.5-inch solid-state drive with a Serial Attached SCSI (SAS) interface. It’s called the PM1643 and uses Samsung’s latest 64-layer 3-bit 512-gigabit chips. The drive uses 32 1TB NAND flash packages, each of which contains 16 stacked layers of 512Gb V-NAND chips.

The end result is a drive with twice the capacity of Samsung’s previous largest enterprise SSD, while offering a 12Gb/s SAS interface and achieving 2,100MB/s read speeds and 1,700MB/s writes. Samsung touts that this is four-times the read speed and three-times the write speed of a typical 2.5-inch SATA SSD. However, there’s some M.2 SSDs out there that get close or even exceed the PM1643. For example, Samsung’s own 960 Pro SSD boasts 3,500MB/s reads and 2,100MB/s writes.

Samsung says a 30TB capacity drive was made possible through several advancements including a highly efficient controller architecture allowing the nine controllers from previous drives to be included in one package. That meant more space inside the drive for storage. The drive also includes 40GB of DRAM thanks to Through Silicon Via (TSV), which allows for the interconnection of 8Gb DDR4 chips. The end result being 10 4GB TSV DRAM packages included in the drive. Endurance levels are also extremely high, with a five year warranty during which you can write 30TB and fill the drive every single day.

The 30TB PM1643 drives are already in production with 15.36TB, 7.68TB, 3.84TB, 1.92TB, 960GB and 800GB versions also planned. Jaesoo Han, executive vice president of Samsung’s Memory Sales and Marketing Team commented that, “Samsung will continue to move aggressively in meeting the shifting demand toward SSDs over 10TB,” which is good news for everyone.

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