Or be like Google, give up on UPSs, and just attached a battery to the DC side of each server's power supply.
http://arstechnica.com/hardware/news/2009/04/the-beast-unveiled-inside-a-google-server.ars On May 10, 2010, at 4:41 PM, Simon Spero wrote: > At least it wasn't a "totally transparent" UPS test scheduled for the > Thursday of Thanksgiving weekend. My personal philosophy is that every rack > should have its own UPS separate from the data center one, with enough > capacity to keep going through blips,and handle a clean shutdown if > necessary. That way, when the ops team messes up, far fewer sysadmins get > their weekend ruined. > > Of course, the real problem is that too many people are writing unoptimized > code in energy-inefficient languages like ruby and PHP, which require far > more servers, and far more cooling, to do the same work as properly written > code. If carbon emissions should turn out to be a strong forcer of global > warming, then we can clearly say that every time you write PHP, Phil Jones > kills a polar bear. Please, think of the polar bears. > > Simon