I am interesting in building an Imaging server whose sole purpose is to be
a repository for images, answer PXE requests, and anything else required
to be an "imaging server."

I want as little overhead from extraneous NLMs as possible.

Which NLMs are required? Which are non-essential but beneficial to the
overall installation process (I need the workstations in the tree at some

Please write your replies so people won't need PhDs to follow along.