The nas host in question is a freenas which I believe is NFS 4. I can / will verify if someone would care to respond to this thread.
but when I go to do the same thing in the centos net install I get an error stating simply: "that directory cannot be mounted from the server".
Is the FreeNAS configured to permit the new machine you are building to mount the share?
http://freenas.org/documentation:setup_and_user_guide:services_nfs_shares shows where the settings for that are...
M