AFM Architecture with NFS Traffic

Hi All, I'm putting in a fresh new design architecture of the new Advanced Firewall manager (I use 4200 BIGIP w\LTM+AFM+ASM) My server farm consists of web server tier (exposed to users) and its data center resources which are DB and NFS.

 

The question is, can I create separate and private 3 VLAN's (Web, DB, NFS) ? wont NFS traffic overload the BIGIP machine?

 

What is the recommended approach?

 

BR, Yoni