Hi, not really meant using shadow copy (system state). I'm referring to the Volume Shadow Copy (Not sure why it called VSS) :)
Normally when you specified to use Open File backup, VSS or VSP snapshot is needed. However in my case, this snapshot is not triggered whenever I run a back up of F:\ drive for example. Hence backup is very slow and some files will failed.
However if I use the same selection with BackupExec agent, the VSS will trigger and the backup is successful and fast with no errors.
Hence my problem with Netbackup is that the VSS/VSP will not trigger.
Quite a funny problem as usually when you enable the File Open option from Host Properties > Master, you can force the client to run with either VSP/VSS.
Client is Windows 2003 client and VSS is indeed working as BackupExec agent is able to trigger it.
Weird....