We have an interesting issue. Friday rolls around and we make sure things look good (Full to NAS, then to USB) for the Full backups over the weekend. All is good. Monday rolls around and things look good. Tuesday comes and the Incremental runs to a NAS, then to USB. When next Fulls on Friday rolls in, the NAS to USB fails. The Incrementals apparently cause the USB drive to go offline for the Fulls.
The backup-to-disk device is offline.
This is typically caused by the folder becoming inaccessible due to it being deleted, renamed, or unshared. It may also be caused by a disk full condition. The folder state has been set to offline. Please attend to this condition. Additional detail may be found in the Event Viewer - Application Log.
What I did was remove the USB drive folder from the pool, then add it back by dragging and dropping the folder into the pool. Fulls were happy, until the next Incremental runs.
Has anyone had a similar issue?
Thanks