Hi Guys 

I am running NetWorker 7.4.2 on a Windows 2003 SP1 server, backing up to a STK 
L180 library with 3 tape drives.

The backups seem to hang everynight on the following message:

nsrjobd Jobs error: Unable to find record for job 32327 during an attempt to 
send message to it.

>From the daemon.log i can see the following messages appear before the one 
>above:

4154 10/06/2008 20:36:52  nsrmmd#1 Lost connection to Media Database
39078 10/06/2008 20:36:57  savegrp RPC error: Connection lost with server
7087 10/06/2008 20:36:57  savegrp Lost channel with the server (nsrjobd)
32490 10/06/2008 20:36:57  savegrp group Live-Misc-Daily  aborted.
39078 10/06/2008 20:36:59  savegrp RPC error: Connection lost with server
7087 10/06/2008 20:36:59  savegrp Lost channel with the server (nsrjobd)
32490 10/06/2008 20:36:59  savegrp group Live-Exchange-Daily aborted.

I have engaged EMC on the matter, but so far they havent been able to pin point 
the cause of the problem.

So far I have done the following:

stopped NW services and renamed the /nsr/tmp and /nsr/res/jobsdb directories.
looked through DNS and /etc/hosts for erraneous entries
Disabled strong authentication
Reduced savegroup parallelism (in case server was overworked)
Reduced server parallelism (in case server was overworked)

Also it is worth knowing that Antivirus does not run at that time.
All NIC and switch ports are set to 1GB full duplex.
All NIC and Teaming software is running on the latest HP drivers

I feel like I have exhausted all avenues.

Does anyone have any ideas or is suffering from the same issues?

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