Solid-state Software Defined Storage: NVMe vs. SATA

As solid state drives (SSDs) technology matures, the performance it delivers is constrained by old disk controller technologies. The NVMe protocol on PCIe interface allows to bypass the controller by attaching directly a disk drive to the bus. In this report we present the results of using Microsoft Storage Spaces and Intel RSTe with SSDs attached to SATA and NVMe. The tests compare RAID0, RAID5, and RAID 10 bandwidth performances on up to four drives.
The tests show that it is possible to obtain up to 10GB/s of throughput with 4 NVMe drives, about four times the performance achieved through SATA by SSDs drives based on the same technology.


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