A recovery-first field note: an earlier VM restore was unsatisfying, so compare Veeam, PBS and native Proxmox backup using the same isolated full-VM restore and host-rebuild criteria.
A non-destructive k3s backup audit covering datastore type, snapshot inventory, schedule, retention, QNAP copies, server-token protection, file integrity and an isolated restore test.
A field note from a small k3s environment: etcd snapshots matter, but credible recovery also needs the original server token, GitOps state, database backups, persistent file protection and restore evidence.