Have a look at:

How to modify the  "Inactivity Timeout" attribute for a NetWorker Group (savegrp) resource

http://solutions.emc.com/EMCSolutionView.asp?id=esg59552&usertype=C

This will explain to you why you are getting this error message and how to fix it.

-Bobby

Even this did not fix the issue. I'm facing the same problem again.

After setting the 'inactivty timeout' to 0, what error message are you getting exactly for this failing backup?

-Bobby

The save is running from last 18hrs. this time it might not fail as the inactivity timout was set to 0

Hi All,

        You can try a backup of the SYSTEM DB: with the VSS:*=off. If this fails too, then try a client initiated backup of the VSS SYSTEM SERVICES:\ saveset. If the client initiated backup fails too then this might be because of the "Removable media" service, ensure that this service is set to disabled on the client. On the other hand if the client initiated backup of this saveset succeeds then this is a permission issue. The "LOCAL SYSTEM" user might not have the permissions required for this backup. In the client properties of that client uder "Apps&Modules" put in the user name/password of any user who is an administrator on that client and then try a backup. This should work. But, why the LOCAL SYSTEM user account is not able to do the backup of SYSTEM DB/ VSS SYSTEM SERVICES is not known to me. I hope comeone from the EMC L2 team can shed some light on this one.