October 26, 2023 Subject: Overview, Configuration, and Best Practices for the OpenMediaVault USB Backup Plugin
: Many users maintain two or more USB drives, rotating them between the server and an offsite location to protect against local disasters (fire, theft). omv usb backup plugin
| Issue | Likely Cause | Solution | | :--- | :--- | :--- | | | Drive not mounted or unrecognized FS. | Plug the drive in, go to Disks -> File Systems, and mount the drive first. | | Permission Denied errors | USB drive formatted as NTFS/FAT32. | Reformat drive as ext4 or adjust Rsync arguments to ignore permissions (not recommended for system backups). | | Backup fails silently | Drive went to sleep or was disconnected. | Check system logs ( /var/log/syslog ) and ensure the drive stays powered during transfer. | | "No space left on device" | Drive is smaller than source data. | Use a larger drive or exclude specific sub-folders in the job configuration. | October 26, 2023 Subject: Overview, Configuration, and Best
It uses under the hood, a powerful utility that only copies new or modified files, making subsequent backups significantly faster than the initial one. Key Features | | Permission Denied errors | USB drive