How to backup big files server Windows

Hi,

We have a Windows Files Server with few network drive. One of it with a big size more 4,7TB and a lot of files (I don't know how many, arround 2'880'916). But after run 7 hours the backup crash with the following error message in the Windows Event Viewer :

Faulting application name: save.exe, version: 8.2.1.0, time stamp: 0x5493ae17

Faulting module name: liblocal.dll, version: 8.2.1.0, time stamp: 0x5493a4c9

Exception code: 0xc00000fd

Fault offset: 0x0000000000065c97

Faulting process id: 0xab8

Faulting application start time: 0x01d1e38ec90907f8

Faulting application path: C:\Program Files\EMC NetWorker\nsr\bin\save.exe

Faulting module path: C:\Program Files\EMC NetWorker\nsr\bin\liblocal.dll

Report Id: 403a0b12-4fc1-11e6-80d3-0025b5a0002d

Faulting package full name:

Faulting package-relative application ID:

I have try with and without setting this parameter in the definition of the client : VSS*:=off or Client Direct. But without success!

This Windows File Server will be protected with McAfee Anti-Virus tool!

Thanks for your help.

Regards

/Olivier