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The end of HDD? Samsung debuts a 3.2TB PCIe SSD card

The end of HDD Samsung debuts a 3 2TB PCIe SSD card ITworld


Solid-state drives have been primarily used in desktops as fast boot drives, with large traditional hard disks used for the mass data storage and some apps. Most of the advancements in SSD media has been more around wear leveling and durability rather than raising capacity.

Well, now that they are getting the durability squared away, some are going for capacity. Several have released 1TB drives. Samsung just one-upped them all with a PCIe-based drive that holds 3.2TB.

The drive is based on Samsung's 3D V-NAND, or vertical NAND, flash memory technology, which uses 3D stacking of the cells. In traditional memory architectures, 2D structures were the norm, which meant that the more memory packed into a chip, the denser the memory became, causing interference between cells. So instead of building out, Samsung built up, as it were.

Samsung's choice of PCIe was not an accident or catering to the high end crowd. SATA III, the current top-of-the-line bus for hard drives and SSDs, is maxed out and the drives are faster than the interface. The result has been a plateauing of performance by SATA-based SSD drives. The SM1715 is a four-lane PCIe card, which offers 1.6GB of bandwidth. SATA III has just 600MB of bandwidth.

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