"Facebook reported in its SEC filing that it owns 'network equipment' valued at $1.016 billion at the close of 2011," reports Rich Miller of Data Center Knowledge. "The number reflects the expense of rapidly building a massive Internet infrastructure, including Facebook's shift from buying vendor gear and leasing data centers to building its own servers, racks and custom data centers."
Photo above shows Facebook's first outside the U.S. data center currently being built on the edge of the Arctic Circle. The northern Swedish city of Lulea chosen for the data center is partly because of the cold climate — crucial for keeping the servers cool — and access to renewable energy from nearby hydropower facilities, according to the company.
Image below is a visualization of Facebook's social graph of 500 million back in 2010 created by intern Paul Butler.
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