Intermediate 19 min

Snapshots & Proxmox Restoration

Create VM/LXC snapshots before updating, restore an earlier state and manage backups from the panel.

#Snapshot#Backup#Restore

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Snapshots & restoration on Proxmox

The snapshots Proxmox capture the disk and memory (optional) state of a VM or CT at one T-minute. Indispensable before updating OS, kernel patch or migration, they allow a rollback in minutes. This guide covers creation, restoration and good practices.

Types of backup

Snapshot, light snapshot, chain over local storage
Backup (vzdump), complete archive to backup storage
Sauvages panel, listed in the client area if option active

Create a snapshot

Select VM or CT in the Proxmox tree
Tab Snapshot → Take Snapshot
Explicit name: avant-maj-nginx-2026-06
Uncheck Include RAM unless required exact memory status (heavier)
Confirm, snapshot available in seconds to minutes depending on size

Limit the number of snapshots kept: each snapshot consumes disk space on your allocation.

Restore a snapshot

Stop the VM if it turns (recommended)
Snapshot → select instant → Rollback
Confirm, the disk state returns to this snapshot
Restart VM and check service

Backups vzdump (planned)

For complete exportable backups:

Datacenter → Backup → Add, VM selection, time window, snapshot/stop mode
Storage destination : local or share backup
Restore restoration from the .vma or .tar archive

Good practices

Snapshot before each production change
Test the restoration on VM staging
Combine local snapshots and off-site backups for critical data

Troubleshooting

Rollback impossible, existing children snapshots, delete the most recent first
Full disk space, delete old snapshots, see Storage