I have a dedup storage and a stand alone tape drive.
My backups runs to the dedup storage and for one server alone the full backup which runs on the weekend gets duplicate to the tape (LTO-4)
The weekend backup job finishes on Saturday. Then the duplicate to tape is initiated. I always make sure to insert an overwritable tape in the standalone drive before I leave on Friday.
Now the issue is on Saturday when the duplicate job is half way through the tape is full and it will wait for a second tape to be inserted. I come back to office on Monday. I will insert a second overwritable tape and then the job fails with read/write error on the deduplication storage.
I have tested this many times and this happens because of the long wait for the second tape to be inserted. May I know what is causing this issue ?
If the tape is inserted immediately the job completes successfully.