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Toshiba CM6: PCIe 4.0 enterprise NVMe SSDs offer up to 6.7GB/sec reads

Toshiba Memory's next-gen enterprise and data center NVMe drive is here, the new CM6 series

By Anthony Garreffa | Aug 22, 2019 11:08 pm CDT

Toshiba has just unveiled the world's first PCIe 4.0-based enterprise SSDS at Flash Memory Summit 2019, with the new Toshiba CD6 and CM6 series SSDs use PCIe 4.0 lanes to drive speeds through the roof.

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Mixed with Toshiba Memory's in-house and latest 96-later BiCS4 FLASH NAND we have up to 6.7GB/sec transfer rates. Yeah, 6700MB/sec.

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Toshiba's previous-gen CD5 and CM5 were based on PCIe 3.0 x4 lanes with max speeds of around 3.2GB/sec, so the lanes opening up on the PCIe 4.0 highway drive speeds at up to 6.7GB/sec is a huge win. Even more so when you consider it's a huge 12x speed improvement over the normal SATA drives at 525MB/sec (0.5GB/sec compared to 6.7GB/sec is huge).

The new CM6 and CD6 drives are offered in the SFF-TA-1001 specification SSD form factor, which is otherwise known as U.3 -- this provides more flexibility in the server space. The U.3 standard means you can plug in any flavor of SSD, meaning you can throw in super-fast NVMe drives into any SSD socket without much investment.

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