Google reveals server secrets

One of the interesting things about Google's approach to technology is that it uses shipping containers packed with tens of thousands of cheap home-made PCs instead of rooms full of expensive mainframes. However, it hasn't previously revealed any of the details. That's what it did at a conference yesterday, and CNet's Stephen Shankland has published the story and photos.

Among the secrets: each server has two processors and its own 12-volt battery to supply power if there's a problem with the main source of electricity. Also, each shipping container holds 1,160 servers and can consume 250 kilowatts.