Backups in Longhorn are objects in an off-cluster backupstore. A backup of a snapshot is copied to the backupstore, and the endpoint to access the backupstore is the backup target. For more information, see this section.
Prerequisite: A backup target must be set up. For more information, see Set the BackupTarget. If the BackupTarget has not been set, you’ll be presented with an error.
To create a backup,
Navigate to the Volume menu.
Select the volume you wish to back up.
Click Create Backup.
Add any appropriate labels and click OK.
Result: The backup is created. To see it, click Backup in the top navigation bar.
For information on how to restore a volume from a snapshot, refer to this page.