I have a ticket open with Veeam (Case 00514136), but I thought I'd post here as well, as the answer doesn't seem to be forthcoming. Every night I run a backup to disk job (to a QNAP NAS), and then I want to take the full backup file and write it to tape.
The backup to disk works fine, but when the tape job starts it immediately fails. It seemingly fails before it even has time to initialize anything. If I start the job again it always fails the second time - same thing, failing immediately after hitting start. However, if I start the job a third time it works! It writes to tape for a few hours then finishes successfully.
The error message is: "Unable to backup: The specified network name is no longer available" I find this odd, as for the two hours prior to this job Veeam is busy writing to this NAS, and has no problem doing so.
Some of the things I've tried:
-Backing up to a different NAS
-Delaying the Backup to Tape job to start long after the previous job finished, instead of directly after
-Rebooting the server and the tape drive
-Updating the tape drive drivers to the latest (HP LTO-5 SAS drive)
Has anyone else ever seen this? Any ideas?