Our server is one of these black boxes.
Aug 2 2006: The first phase of The Benmar Generator Augmentation Project is complete. This phase of the project added a new 2MW redundant generator, and a 12,000 gallon freestanding fuel tank to Houston's DC1, bringing the total number of generators at DC1 to three. The two generators DC1 had were zoned before the augmentation, but now the three generators have full paralleling gear. We currently have 4.75MW of generator power and 21,000 gallons of diesel fuel on site. At our current usage level this fuel will last for four to five days without refueling.
Here's a look at the power distribution system in one of the seven data centers.
Power distribution, uninterruptible battery supplies to hold power while the generators start up, power transfer switches and generators.
All this and if there's a problem in the conduit from the outside transformer, BANG!