ZettaKeep runs the current stable Proxmox Backup Server 4.x release. It behaves exactly like a PBS you'd run yourself — because it is one. We just handle the infrastructure, patching, monitoring and storage.
Datacenter → Storage → Add → Proxmox Backup Server. We show exactly which field takes each value, with copy buttons.
pvesm add pbs zettakeep --server ... --datastore zk-datastore --fingerprint ...
ZettaKeep is an independent product and is not affiliated with Proxmox Server Solutions GmbH. Compatible with Proxmox VE and Proxmox Backup Server.