Nb 5.0 mp6 Solaris 9

We are having issues with restarting netbackup and having our netapp
tape drive interface hang.  The other day we had to stop netbackup while
backup jobs were running on the filer using the NDMP protocol. After
netbackup was down and then brought back up some of the tape drive
interfaces (we have fiber LTO3 drives attached to the filers) would
hang. Upon further investigation it seems that the filer still had a
"job" on the tape drive even though no day was being sent from the
filer. We are suspecting that when netbackup comes down the command from
netbackup to filer to stop its "job" is either not getting there at all
or is taking too long. The "fix" is to turn the tape drive off and on or
down and up the interface on the switch. Both force a rescan by the
filer to re establish communications. We are running the latest code
from netapp.
Has anyone else ran into this issue? Also what is the recommend, best
practice way to stop netbackup while you have jobs running?


Greg 
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