Let's make this Question Simple:

I have Server A, it is a master/media server (Enterprise), it has a 
library connected to it whose drives are also available via SAN to 
server B-Z.  Server B-Z currently are backed up via the Network as 
simple NBU Clients 

We've  added Shared Drives Key (SSO Enable) to Server A.

Now my Questions:

Do we need to install  / add "something" to our existing NBU Clients 
(Server B-Z)  so they can request mounts on Server A so they can backup 
locally? I don't want to have any other media server outside of Server 
A...  The idea is using SSO and our SAN, clients can request mounts on 
shaerd drives controlled from the master/media and data is backed up 
locally.

I am reposting this Q becuase I seem to be hearing/reading.. that I need 
Media Manager (eitther flavour) installed on my clients that will now 
backup data using SSO..