A few days ago I read this article on how to put Xen on a Mac mini and though of the Mac mini colo. Now you can get even more machines into the same small area. The article talks about using Xen to not only run Linux but windows as well. You could have a farm of Mac minis running Linux, FreeBSD, NetBSD, Solaris, or Windows.

[tags]xen, linux, netbsd, freebsd, solaris[/tags]