Proxmox Backup to NAS: NFS vs SMB Setup and Restore Checklist

Preparation date: September 17, 2026. Scope: This is a documentation-based implementation and verification guide, not a claim about a completed customer incident. It covers ordinary Proxmox VE VZDump backups written to NAS storage. A Proxmox Backup Server datastore is a different architecture and is called out separately. The short answer is: choose NFS when Proxmox is the main consumer and your NAS can restrict the export to the Proxmox node addresses. Choose SMB/CIFS when the same share must also fit a Windows-oriented operating model or your NAS administration is already built around named users and SMB permissions. The protocol choice matters, but the restore test matters more. A green backup task proves that an archive was written; it does not prove that you can recover a VM on replacement storage. Proxmox backup to NAS verification flow A Proxmox node writes a VZDump backup over NFS or SMB to a NAS, then a separate restore test validates recovery. ...
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