Combined power supply?

Hello SuSE folkz, I've assembled a new dual AMD SuSE8.1 Linux DB and web server. It has to work reliably 24X7. Unfortunately, its 460W Extended ATX PS has not enough fan out current to power motherboard, 20 fans and 16 SCSI hard drives at once. Is it possible to add another regular ATX 400W PS to power just hard drives on this system? I can ground both PS housings together with an additional wire. Or I stack to buy a new dual redundant PS? Could somebody please give me a practical advise on this matter. Many thanks in advance. Alex -- Microsoft Windows users should be covered under the Americans with Disabilities Act!!! Try Linux and you'll understand why...