----- Original Message ----- > From: "Barry Jones" <bejo...@semprautilities.com>
> I can't tell you the kind of servers, but I can say that I was > recently in Prineville, OR, where FB is building a data center (and a > second data center). I was used to the ol data centers - you know, > where there's raised floors, cabinets, cool air, a guard and a few > guys around with some screens? Data Center Knowledge posted about 20 minutes of very poorly shot video of Prineville. They're Open Compute servers in 'triplet' racks. > But this was massive. I was amazed at the size - a few city blocks > long and a city block wide, with a transformer and power line the size > of a small city. I wonder if the Feds were involved. Their power supply (also open) runs across 2 legs of a 277/480 3-phase feed, which is usually what the substation supplies to your PDUs, which step it down further to 120/208. It also takes -48, and each pair of triplets has a 48V float string that will run the 180 servers for about 45 seconds. It's a nice setup. I plan to steal it. :-) (The substation input voltage is very often 13k2 to 13k8, though it can be even higher.) Cheers, -- jra -- Jay R. Ashworth Baylink j...@baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://baylink.pitas.com 2000 Land Rover DII St Petersburg FL USA http://photo.imageinc.us +1 727 647 1274
