Virtualized TrueNAS (proxmox) migration to bare metal

That depends on your use case. But with only 3 drives, options are limited. And if you only have 3 SATA ports, the hardware is not really suitable for a NAS—or you’re not disclosing everything, e.g. what you’re booting from.

I’m unsure how that fits with “TrueNAS baremetal”. TrueNAS serving storage for a distinct Proxmost server?