> It's IOPS, not throughput, that NVMe gets you. (Or rather, if you're not being bottlenecked by IOPS, then NVMe won't get you anything over a JBOD of SATA SSDs

> It's IOPS, not throughput, that NVMe gets you. (Or rather, if you're not being bottlenecked by IOPS, then NVMe won't get you anything over a JBOD of SATA SSDs It's both. Throughput is a significant issue with SATA. You need 6 SATA drives to match the throughout of single PCIe 3x drive. The SATA JBOD will have a significant higher CPU overhead at combined line speed than NVMe. > If you've got higher concurrency, you'll want several NVMe SSDs behind a hardware RAID controller, in RAID0. The few examples of raid controllers with NVMe support I had access increased latency sufficiently to be quite painful.