You can connect with SMB or CIFS I find both are very good and stable. There is a problem with spotlight in that it will not index this connection so searches are SLOW, if I find a solution to that I will let you know. We have around 100 stations connected to a FAS270 and they connect well...
in the network connect to server add..
SMB://servername/sharename
or
CIFS://servername/sharename
Its that easy...