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3-2-1 backup with Proxmox Backup Server: storage costs decomposed What a 3-2-1 backup really costs with PBS once deduplication enters the picture, decomposed copy by copy, with real per-TB numbers. Missing-backup alerts for Proxmox Backup Server Cloud-PBS alerts you when a Proxmox Backup Server datastore stops receiving successful backups, down to each individual VM, with per-VM thresholds and an opt-out.

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Proxmox Backup Client failed: error missing key How to resolve the 'error missing key' when using Proxmox Backup Client with an encrypted datastore. Backup owner check failed — how to fix it Resolve the 'backup owner check failed' error in Proxmox Backup Server. Step-by-step troubleshooting guide.
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Services Cloud Backup Datacenter Management Offline Backup Copy Managed Restore
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Getting Started Requirements 6 basic things to get started
Backup How to start a backup How to schedule backups from your Proxmox VE interface
Restore How to restore a full disk How to restore a single file
Security How to change your instance password Proxmox Backup Server encryption: how to enable client-side encryption
Advanced Configure retention and purge a datastore How to change verification intervals
Support Tickets
All documentation →
Guides 3-2-1 backup with Proxmox Backup Server: storage costs decomposed Missing-backup alerts for Proxmox Backup Server
Migration How to migrate Proxmox servers from one provider to another using Cloud-PBS
Troubleshooting Proxmox Backup Client failed: error missing key Backup owner check failed — how to fix it
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Home / Documentation / Advanced

Advanced

Advanced configuration, sync jobs, and backup optimization.

Configure retention and purge a datastore

Set your backup retention policy from the Retention tab, and purge a datastore when needed.

How to change verification intervals

From the Proxmox Backup website itself :

Create namespaces into a datastore

In Proxmox Backup Server, namespaces are a feature introduced to help organize backup data hierarchically.

How to configure synchronization from remote Proxmox Backup Server

With Proxmox Backup Server, you can configure synchronization to allow a remote server to pull or push backups from another one.

Missing backup alert

Set up an alert that notifies you when a datastore has had no successful backup within a configured window.

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