Google's Data Centers Link

From the always excellent xkcd What If Series:

To make things worse, given the huge number of drives they manage, Google has a hard drive die every few minutes.[11] This isn’t actually all that expensive a problem, in the grand scheme of things—they just get good at replacing drives—but it’s weird to think that when a Googler runs a piece of code, they know that by the time it finishes executing, one of the machines it was running on will probably have suffered a drive failure.

Google’s search and advertising systems might be one of the greatest wonders of our modern world. As usual xkcd puts it into impressive perspective.