I had one of those old huge format beige Tower cases that came halfway between my knee & waist - sigh - wish I had it now...

but you MUST be able to get special cases - I remember that there was a double width style case that allowed heaps of extra drives - second power supply to keep the extra drives alive - big server.... it's hard enough to find QUIET cases of any decent size at the moment...

You might want to bolt that to the desk, or put a ton of concrete inside it... :-)

Robin