Update: general problems with that Backup Exec installation have prevented the job in question from running between 2013-12-24 and 2014-01-18. When it was finally able to run again this Monday, the error was back exactly as before.
Yesterday I made a configuration change, adding a monthly copy stage and modifying the schedule of the backup stage, and scheduled an out of cycle full backup to make the warning about changed settings go away. On the following regular incremental job, the error had changed as follows:
- The backup to disk, which previously completed without errors, now reports error V-79-57344-34009 - An error was encountered creating on-disk catalog. If this is an incremental backup, cataloging of the generated media may not work correctly.
- The copy to tape, which previously reported error V-79-57344-38277 as described in the OP, now completes without errors.
SGMon produces an enormous heap of messages but nothing that appears in any way related to the problem. I'm at a complete loss what to try next.
Thanks in advance for any hints.
Tilman