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by mysteria 746 days ago
PBS is the Proxmox Backup Server, basically it does differential backups of your VMs, integrity checks, and allows you to back up to multiple different servers. Proxmox does have a basic backup system that can save the VM images to disk though but I typically recommend the full PBS if you're building a cluster.

One interesting thing you can do is run PBS as a giant VM and back up or migrate the whole thing, just like you can run a small NAS as a VM as well.