Remote file server¶

You can use the filesystem backup storage type to mount a remote file server to a local directory as a sidecar volume, and make Percona Backup for MongoDB use this directory as a storage for backups.

The approach is based on using common Network File System (NFS) protocol . Particularly, this storage type is useful in network-restricted environments without S3-compatible storage, or in cases with a non-standard storage service that still supports NFS access.

Add the remote storage as a sidecar volume in the replset section of the Custom Resource (and also in configsvrReplSet in case of a sharded cluster). You will need to specify the server hostname and some directory on it, as in the following example:
```
replsets:
- name: rs0
  ...
  sidecarVolumes:
  - name: backup-nfs-vol
    nfs:
      server: "nfs-service.storage.svc.cluster.local"
      path: "/psmdb-my-cluster-name-rs0"
  ...
```
The backup-nfs-vol name specified above will be used to refer this sidecar volume in the backup section.
Now put the mount point (the local directory path to which the remote storage will be mounted) and the name of your sidecar volume into the backup.volumeMounts subsection of the Custom Resource:
```
backup:
  ...
  volumeMounts:
  - mountPath: /mnt/nfs/
    name: backup-nfs-vol
  ...
```

Finally, storage of the filesystem type needs to be configured in the backup.storages subsection. It needs only the mount point:

backup:
  enabled: true
  ...
  storages:
    backup-nfs:
      type: filesystem
      filesystem:
        path: /mnt/nfs/

Last update: February 25, 2026
Created: February 25, 2026