[Networker] No Additional Sense, Diagnostic Failure on Component

Folks-
I am seeing an odd error...  I'm wondering if anyone else has seen this
before.

Background:
 Server:
  Sun Netra t1125, SunOS 5.8
  NetWorker 7.3.2.Build.364 Network Edition
 Jukebox:
  Storagetek Timberwolf 9710, DLT7000 drives

Backups cruise along just fine for a while, it swaps full tapes just fine,
etc.  Eventually, though, a tape will fill and it won't load a new tape.
In the log files, I see things like this:

==========
nsrd: Operation 5893 started : Load volume `production.0026'.

nsrlcpd #1: Jukebox error: Jukebox:juke0 access:[email protected] failed:MOVE
MEDIUM key:4 status:CHECK CONDITION No Additional Sense, Diagnostic
Failure on Component 0x02

nsrmmgd: lcpd 1 at host backup0 reported error 'Jukebox:juke0
access:[email protected] failed:MOVE MEDIUM key:4 status:CHECK CONDITION
No Additional Sense, Diagnostic Failure on Component 0x02 ' for the
command `4'.
==========

>From that point on, I can't load/unload any tapes.  Even "nsrjb -H -E"
fails.  If the jukebox is power cycled, then everything is fine until the
next time the error occurs.  I even tried disabling all but one tape
drive, but it still does it.

My first suspicions are that it is a SCSI cable or SCSI bus issue, but
before I send a tech out to look at it, I thought I would check to see if
anyone else has run across this before.  I kind of doubt it is software
related, but it's always possible...


Thanks,

TomP

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