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On Sat, Aug 19, 2006 at 11:21:06PM +0100, Robin Cornelius wrote: > Simon Avery wrote: > > > > > A "basic" modern psu is about 450-500watt now to cope with hungry > > processors and fancy graphics cards, and should have a load to spare in > > a more modest system with a bunch of drives. > > I heard somewhere that server farms now run DC power buses to the racks > so that you can have the enormous (redundant) PSU's away from the > processing power for heat removal, maintenance and space saving. Common in telecoms apps rooms, everything runs off ~50VDC, backed up by big batteries. Has a secondary advantage of being a "low voltage" device and not needing the same testing as a normal apps room. -- The Mailing List for the Devon & Cornwall LUG http://mailman.dclug.org.uk/listinfo/list FAQ: http://www.dcglug.org.uk/linux_adm/list-faq.html