Well that sounds even worse to be honest.
As I understood it:
You mostly need a NAS to store your ISOs. Maybe some VMs on top for some lightweight services.
TrueNAS Scale or unraid are way better suited for this in my opinion.
Biggest difference between the two is the "real RAID" vs "fake RAID".
If you don't need extreme performance nor some ZFS features, you will better off with unraid.
Power consumption for example will be way lower with unraid.
There are also other fake raid alternatives.
Again, it all depends on what you try to achieve.
The better you describe your needs, the better other users can help you.
As I understood it:
You mostly need a NAS to store your ISOs. Maybe some VMs on top for some lightweight services.
TrueNAS Scale or unraid are way better suited for this in my opinion.
Biggest difference between the two is the "real RAID" vs "fake RAID".
If you don't need extreme performance nor some ZFS features, you will better off with unraid.
Power consumption for example will be way lower with unraid.
There are also other fake raid alternatives.
Again, it all depends on what you try to achieve.
The better you describe your needs, the better other users can help you.
