Storage and BackupBackup PlatformsIntermediate2-3 hoursLab build

Build a Proxmox Backup Server Lab with Retention Policies and Monthly Recovery Drills

Build a Proxmox Backup Server lab with retention policy, backup job evidence, and a monthly restore drill so recovery confidence comes from tested restores.

Last reviewed4/30/2026

Proxmox Backup ServerWindows share backup audits

Proxmox Backup ServerLinuxCron

Expected Outcome

A fully functional Proxmox Backup Server configured with retention policies and a scheduled plan for monthly recovery drills.

Assumptions

Basic understanding of Linux command line
Access to a Proxmox VE environment
A dedicated server or virtual machine for the Proxmox Backup Server

Bill of Materials

Proxmox Backup Server ISO
Sufficient storage for backups
Network access to Proxmox VE

Build Steps

Install Proxmox Backup Server
Download the Proxmox Backup Server ISO and install it on your dedicated server or virtual machine.
Example pattern only. Adjust for your environment before running.
```
wget https://downloads.proxmox.com/iso/pbs/Proxmox-Backup-Server_2.4-1.iso
dd if=Proxmox-Backup-Server_2.4-1.iso of=/dev/sdX bs=4M status=progress
reboot
```
Configure Proxmox Backup Server
Access the Proxmox Backup Server web interface and configure your storage settings.
Example pattern only. Adjust for your environment before running.
```
https://<your-backup-server-ip>:8007
```
Set Up Retention Policies
Define retention policies to manage backup data and optimize storage usage.
Example pattern only. Adjust for your environment before running.
```
pbs-cli datastore create <datastore-name>
pbs-cli retention set <datastore-name> --keep-last 5 --keep-daily 7 --keep-weekly 4 --keep-monthly 12
```
Schedule Monthly Recovery Drills
Create a cron job to automate the monthly recovery drills to ensure backups are valid.
Example pattern only. Adjust for your environment before running.
```
echo '0 1 1 * * pbs-cli restore <backup-id> <target-path>' | crontab -
```

Run a manual restore validation

Before trusting the schedule, restore a small test backup to an isolated target and confirm the restored files or VM data are readable.

Example pattern only. Adjust for your environment before running.

proxmox-backup-client snapshots --repository <user>@pbs@<pbs-host>:<datastore-name>
mkdir -p /tmp/pbs-restore-test
proxmox-backup-client restore <snapshot-id> <archive-name> /tmp/pbs-restore-test --repository <user>@pbs@<pbs-host>:<datastore-name>

Record retention and restore evidence
Capture the configured retention policy, latest backup timestamp, and restore test result in your backup operations notes.
Example pattern only. Adjust for your environment before running.
```
date -Iseconds
du -sh /tmp/pbs-restore-test
```

Validation

Check the backup status in the Proxmox Backup Server web interface.
Perform a test restore from the backup to verify integrity.

Troubleshooting

If backups fail, check network connectivity and storage availability.
Review the Proxmox Backup Server logs for error messages.

Cleanup or Rollback

Remove any unnecessary backups after validation.
rm -rf /tmp/pbs-restore-test
Remove temporary restore drill targets after evidence is captured.
Ensure that the retention policies are correctly applied.

Next Improvements

Integrate backup solutions for other environments, such as Windows shares.
Consider implementing additional monitoring for backup health.