back to article STEC this out: Flash biz bakes 2TB solid-state drives

Enterprise-grade flash maker STEC is bringing out two 2TB whoppers: an SAS SSD and a PCIe flash card. The 2TB s840 is a refresh of an existing enterprise-grade SAS SSD which uses 2-bit MLC flash and has 200GB, 400GB and 800GB capacities. The 2TB model will arrive in February. This s840 delivers up to 75,000 random read IOPS, 11, …

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SAS limits

It's too bad that the SAS 12Gbit is already a bit late and will immediately be bandwidth limited with SSD storage units. The Standards Committee behind the development should have aimed higher than just doubling the speed time and time again. Due to the 8b10b signaling SAS/SATA 6.0Gbit is really limited to around 520MB/s, which most of the current flagship drives from all manufacturers have reached. The flash memory chips could easily handle much higher data rate as shown with the PCIe SSD cards. Excluding reading from/writing to cache, 3.0Gbit signaling is still sufficient for any current hard drive.

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