Looks like I'm gonna exclude most of our #FCOS VMs from daily Proxmox #Backup Server.

Those FCOS VMs tasks are running containers. All we need is just backup quadlet files and /etc/default. For most of container's data, I think we can use application level replication. If it's not available, I rather backup those container's volumes.

Why?

Because full backup of vm disk images is too expensive. Not talking about storage price, but about extraneous load on infrastructures (cpu, storage i/o).