Well, you were a little sparse on details about your precise objective.
For a regular rsync based backup set of scripts, take a look at:
The scripts are assuming that you are backing up to separate drive on your local machine, but they can easily be tweaked to make the rw mount during the rsync backup be NFS based.
I am not clear on how you intend to archive your backup - to disk? tape? or?? If you don't want to take advantage of the clever way multiple diffs are transparently made to appear as complete separate backups, you could change the way rsync is invoked, and do away with remotely mounting the backup archive altogether.