Here's where my VM experience may run out for your purposes. I'll teIl what I have and maybe others will chime in.   Dockers do most of what I need. I only have a couple VMs, that I don't consider critical (yet), just playing around for now. Neither of the VMs need multiple vdisks, or even large ones (32G and 15G). Both use VNC for remote desktop with no dedicated graphics.   I have 2 pools. One, named "fast", is 1x256G nvme formatted XFS, and another, named "cache", is 2x500