Excerpt: What kind of hardware are we dealing with? Do we want to toss this in a rack or not? If so, shall we try to conserve rack space and go with something slim and trim like a 1U or 2U? Are we going to be packing this chassis with disk drives or using an external enclosure? How many PCI devices are we going to be dealing with here? (not so much of an issue unless we're talking 1U or 2U) I could go on and on (heh, you all know that), but I'll stop short.