StarWind has no in-house functionality to pool the NVMe drives. It uses either Linux MDRAID or ZFS for that purpose, none of which were designed to handle that amount of IOPS. Only to make things worse iSCSI is another sad story to tell - it's CPU hog. Don't get me wrong: they do have a properly designed products built around GPU-based RAID and using proper protocols like NVMe-oF/TCP & FC. But they are all hardware not software...ooph. not good. have you found any good alternatives? I've tried Dell's S150, Windows server 2022 Storage Spaces, StarWind's SAN software. So far the best is SS (about 50-65% of single disk), worse is StarWind's by far (about 10-20% of single disk), but admittedly that could be a settings issue.
StarWind SAN & NAS over Fibre Channel
StarWind SAN & NAS is adding support for not just Fibre Channel, but also the GRAID NVMe accelerator card.
www.storagereview.com
Hands On with StarWind NVMe-oF Initiator for Windows
The StarWind NVMe-oF Initiator for Windows is a simple install on any Windows host. There's no need for specialized hardware.
www.storagereview.com