Originally posted to Data Center Frontier by Rich Miller.

In its ongoing super-sizing of its data center campuses, Facebook is going back to the beginning. Facebook will build two new data centers as it expands its campus in Prineville, Oregon, where the company built its very first data center back in 2011.

The expansion project will give Facebook 2.15 million square feet of data center space in Prineville by 2021. It will break ground on the fourth data center building this month, which will begin serving traffic in 2020. Building five at Prineville will break ground in 2018 and begin serving traffic in 2021.

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