On 9/30/11 15:58 , Seth Mattinen wrote: > On 9/30/11 3:41 PM, Michael Painter wrote: >> Steven G. Huter wrote: >>> this August 2011 article in the Economist outlines some relevant info >>> about the prineville, oregon FB datacenter. >>> >>> http://www.economist.com/node/21525237 >>> >>> steve >> >> Informative article..."It's the climate, stupid". >> >> Got a laugh out of: >> "The server racks are nearly silent, and their internal fans whirr >> almost imperceptibly. >> The only exceptions are network switches which, Facebook staff notes, >> are perversely designed by even the biggest firms to vent air out of >> their sides. As a result, they run loud and hot-and are openly sworn at." >> > > > Which says to me that FB staff has no clue how chassis switches are > constructed, or they don't like switches with vertically oriented line > cards.
nobody puts a chassis switch at the top of a rack... there are several 1u tors orderable with either ftb or btf airflow but, it is a design consideration. > ~Seth >
