[Samba] NAS on 2 sites connected via slow link

[Koen Linders]

Lets say: 2 sites: 2 subnets connected via slow link (1M)
Site A: Samba 3 PDC 
Site B: NAS for large videofiles

People will work with/view the files on site B. Data will grow in time.
I want to mount the NAS on the PDC so I can integrate it in a share on site
A.

Anyone has good/bad experience with this kind of situation? Maybe a NAS
system which works without a problem?
Anything I should check for (NFS support I guess)? 

Greeting,
Koen Linders