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Proxmox Backup Server retention: how keep-last, keep-daily and keep-weekly actually work
The PBS prune rules are not what most people think. How keep-last, keep-hourly, keep-daily, keep-weekly, keep-monthly and keep-yearly decide which snapshots survive, with a worked example.
Client-side encryption on Proxmox Backup Server: who really holds your keys
Proxmox Backup Server encrypts client-side, but the question that matters is who can decrypt. The zero-access key model, what happens if you lose the key, rotation, and encryption versus immutability.
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How to migrate Proxmox servers from one provider to another using Cloud-PBS
Step-by-step guide to migrate your Proxmox VE servers between hosting providers using Cloud-PBS as an intermediary.
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Proxmox Backup Server training (in French)
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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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Cloud Backup
Datacenter Management
Offline Backup Copy
Managed Restore
Pricing
Partners
Documentation
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 →
Resources
Guides
Proxmox Backup Server retention: how keep-last, keep-daily and keep-weekly actually work
Client-side encryption on Proxmox Backup Server: who really holds your keys
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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How to restore any Linux system from Cloud-PBS
How to restore any Linux system from Cloud-PBS
Last updated: June 25, 2025
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