I have been contemplating converting my windows pc to proxmox. Already have another 3 node proxmox cluster and like it very much.There is no problem in virtualising Truenas. I am sure your problems are due to the way you implemented it. You didn’t give any details about your installation. I have Truenas Scale virtualized on Proxmox, and works perfectly. I use Proxmox for virtualization of all my VMs including the Trunas Scale. I installed an LSI HBA ctrl. in JBOD mode (non-raid) in the Proxmox server and passed it through to the Truenas VM. I connected the drives to the HBA and automatically Truenas is seeing them and creates its volume. This way the ZFS volume is not virtualized, but just the OS disk is. It works perfectly, and BTW the Trunas GUI is very nice, I don’t understand your complaints. Also what’s the reason to use TN Scale for virtualization when you have Proxmox for that.
1 run blue iris, and hyperv with truenas on the windows. (plus a vm for proxmox backup server)
So the idea is to install proxmox, windows vm for Blueiris and another vm for truenas or openmediavault possibly.
Good to hear that you have truenas working fine on it.
Thanks