Backup Jobs Hang Randomly (BE 12.5)
Backup Exec 12.5.2213 running on Windows 2003 Standard SP2 with latest LiveUpdate and OS updates. (Also experienced identical error on Windows XP SP3 setup).
Backup jobs will hang during backup and job rate will fall with no increase in the Byte Count for the job. A cancel sent to the job will remain hung with cancel pending. All BE services need to be restarted to complete the cancel (or the server rebooted). Backup device is an HP StorageWorks 1/8 G2 SAS LTO-3 drive.
The size of the backup job is about 480 GB. The job will hang at random places (36 GB, 32 GB, 180 GB, 80 GB, etc.) and has succeeded in the past (successful just 3 nights ago). So far, it has not made it past 300 GB when it hangs. We have 30 Sony LTO-3 tapes and they work in other systems with no problems, so I don't believe it is a media problem.
The job touches about 10 servers and the hang has occurred on different servers (2000, 2003, etc.), so I don't think it is a resource problem. All servers have the 12.5 agent installed with AOFO enabled (backup has hung during regular file backups and most recently Exchange backups--but not consistently).
No notable events logged in Application or System Event logs. All drivers for Adaptec SAS 1045 controller are up to date and tape library is using all Symantec drivers.
Any help would be greatly appreciated as we have seen this identical error on both an XP Pro SP3 OS and Server 2003 SP2 setup (both clean installs).