> I love it when a system like this A. does not try to railroad you into the "correct path" and B. the independent layers actually work independently.

Agree! My first thought while reading the article was that it would be very easy to do this on OpenBSD as well, either with USB floppies or normal 34-pin drives as well.

OpenBSD's softraid stack doesn't care much about what the underlying hardware is as long as it looks like a disk and talks like a disk.