Not OP but TrueNAS is a good alternative - both the software and their all in one NAS builds.
I have an unraid on a usb stick somewhere in my rack, but overtime it started feeling limited, and when they began changing their license structure I decided it was time to switch, though I run it on a Dell r720xd instead of one of their builds (my only complaint is the fan noise - i think 730 and up are better in this regard)
Proxmox was also on my short list for hypervisors if you dont want TrueNAS.
I have an unraid on a usb stick somewhere in my rack, but overtime it started feeling limited, and when they began changing their license structure I decided it was time to switch, though I run it on a Dell r720xd instead of one of their builds (my only complaint is the fan noise - i think 730 and up are better in this regard)
Proxmox was also on my short list for hypervisors if you dont want TrueNAS.