Can the backup fail when the OS NATIVE DEVICE changes?
/dev/sda -> /dev/sdis (root space)
OS : Redhat Linux 6.3
VSR : VSR-L 18
Yes, I would expect the backup fail in this scenario.
You would either need to modify the job, or create a new backup job for the new device.
As I mentioned before, I would expect (although never tested it) the backup to fail if the device name changes.