Backupexec 2012 and Hp B6200 NAS Share Backups

Hi Community Members,

I have a Backupexec 2012 Server running backups to Physical Library and Disk Storage.Recently we had got a HP B6200 Dedplication device which can be configured as a VTL and NAS Device.

Backup jobs when targeted to VTL are much faster,But when i run backups from NAS Share the backups are very slow.

I had configured the share as file server .Is this the correct way?

how do i speedup my backups(The B6200 is having 10G Ethernet connection)

Is there any other specific licenses thet need to be installed on the Media server .

Thanks in advance for your support.

Regards