North American Network Operators Group

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Google's PUE

  • From: Patrick W. Gilmore
  • Date: Wed Oct 01 13:53:09 2008

[#include: boiler-plate apology for operational content]

Google has released its PUE numbers:


There is a nice explanation of this, including a graph showing why DC efficiency is more important than machine efficiency (on the second page) at this link:

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I think GOOG deserves a hearty "well done" for getting a whole DC under 1.2 PUE for a whole year. (Actually, I think they deserve a "HOLY @#[email protected], NO @*&@#-ing WAY!!!")

Personally, I think only a self-owned DC could get that low. A general purpose DC would have too many inefficiencies since someone like Equinix must have randomly sized cages, routers and servers, custom-built suites, etc. By owning both sides, GOOG gets a boost. But it's still frickin' amazing, IMHO.

For their next miracle, I expect GOOG to capture the waste heat from all their servers and co-gen more electricity to pump back into the servers. :-)