We have a Novell server 6.5 (sp3) with Arcserve 11.1 with an Exabyte VXA-2
tape unit.
In the beginning (2 months ago) the backups where no problem , but now the
backup jobs are failing.
In the Arcserve job log we see two errors.
E1039 failed to flush tape driver buffer
E1058 failed to read ...

If we look at the log of Arcserve Tape server, we see
[2256] E6958 Comminucation Failure on SCSI loop
[2256] E6959 Unknown HACB error. Possibly no error occured.

I've looked at CA KB but cannot find a solution.
any ideas?