I got this information from one of my friend at Facebook about Google's secret about their server design. Do you think Google would use a branded server for their servers? Well, think again after you read this post. It's dated 4/1, meaning it could be an April Fool post (and Google is very good at it. Check it here), but if it's not, it's a simple solution for big problems
We all knows that servers must be operational 24/7, meaning it SHOULD NOT stop working for any reasons. The common problem is about hardware malfunctioning or electricity problem. Google solved the second problem by attaching 12V battery to the supply power and it will work as an UPS.
You can look the screenshot of the images here and here.
What do you think? It is a real article or is it still an April Fool? The design was demonstrated at Google Data Center Efficiency Summit, so i guess it's still real.