[SOLVED] Backup on a CIFS NAS share, in a subfolder


Apr 3, 2020

I successfully configured a CIFS storage hosted on my Synology NAS server (some issues with SMB version, resolved now).

The share I use is my main Backup directory where all my backups are stored on the NAS (R-PI, server TGZ, etc).

Is there a way to require Proxmox to store all its backups in a subfolder named "Proxmox" ?

Thank you
Is there a way to require Proxmox to store all its backups in a subfolder named "Proxmox" ?

Yes you can, just Create a Directory from Datacenter -> Storage -> Add Directory give him name and path then when you will make backup just select the folder that you created.
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Reactions: Bilson
I don't get it...
1. create the CIFS storage type, let's say device NAS, share Data
2. create a Directory type ?? what would be the path for this Directory so that backups go into //NAS/Data/Backups ?
Last edited:
You need to set the "is_mountpoint" option to the path of your mountpoint by using pvesm. Otherwise, if the SMB/NFS share fails to mount, the backup job will write all those backups to the root filesystem until the server will crash because PVE is running out of space:

pvesm set YourDirStorageID --is_mountpoint /path/to/your/mountpoint
Last edited:
Just edit /etc/pve/storage.cfg
and add subdir /example at the end of the added storage.

Like this:
cifs: backup-nas
        path /mnt/pve/backup-nas
        server 10.0.0.x
        share backup
        content backup
        prune-backups keep-all=1
        username example
        subdir /example


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