Example 2-13 of the Automated Installation guide demonstrates setting up a
server for 20 clients, but uses /tmp/newimage as the target directory.  We
should never recommend using /tmp for such purposes, as its space will usually
be quite limited in comparison to the standard file systems, and more
importantly, it will vanish on reboot, meaning the user gets to curse us and
then start over!  We should instead recommend creating a ZFS file system for
this purpose such as rpool/ai-service, mounted at /ai-service, to avoid these
problems.