Backup QNAP NAS shared folder

Hi all ,

A while back we migrated from a storage server ( windows 2003 ) to QNAP NAS .

On the server 2003 we have Backup Exec 2010 R3 running which made the tape backup.

Now we want to make the backup of the QNAP NAS shared folders thru the windows server 2003 running backup exec but cant choose these folders . ( can see them but it's greyed out ) .

What could be the issue here ?

This is my current setup :

Backup Module:

Windows server 2003 SP 2

Backup Exec 2010 R3

Shared Folders:

QNAP TS-EC879U-RP 

Will post if any additional info is needed .

Regards ,

Donovan