@vm7user, if you think microseconds (uSec) on network transmission is the main cause of end-application (e.g at the vscsi/VM/OS-level) latency then I would advise you do more research on the entire stack that data for end-consumers of any storage solution has to traverse.

Will vSAN utilise/support iWARP (or any other form of RDMA) in the future? Very likely yes as this is this is an obvious path forward once enough hardware is in the field supporting these (and enough consumers using enough to not be niche).