They'll be located in Dublin, Ireland and Chicago

Microsoft Corp. on Monday said it is preparing to flip the switch on what will eventually be more than 1 million square feet of data center space in two facilities, one in Chicago, the other in Dublin, Ireland. These centers will house hundreds of thousands of servers to help support the company's Bing search engine and other online services.

More: http://computerworld.com/s/article/9134970/