Thank you to everyone for their answer. It sounds like the safest route is for me to build a small computer to handle the role of fileserver.
The last time I built a cluster I know I could PXE boot the terminals, but as I recall I set up the auth and fileservers using a CD. Is it possible and straightforward to use PXE boot to set up the fileserver installation as well? E.g., PXE boot a server and then run the installation and configuration for a fileserver over the network? Jim