True, if you build something inside a rackmount case then it can be whatever you want. However, from what I could tell empty rack mount case & rails are still a bit of a premium. Were you able to get rack mount case w/ rails at decent prices? Seems each one would have to be at least a 2U to fit a normal ATX PSU ( I guess you could use an ITX or small PSU but those can be more expensive for the same wattage).
How did you handle the system & case fans? Did you rack cases have the standard fans and were you able to configure those to be slow/quiet?
How did you handle the system & case fans? Did you rack cases have the standard fans and were you able to configure those to be slow/quiet?