There's a mention of Facebook regularly doing this in the summary section of this instagram engineering post: http://engineering.instagram.com/posts/54872363860

There's a mention of Facebook regularly doing this in the summary section of this instagram engineering post: http://engineering.instagram.com/posts/548723638608102/ http://engineering.instagram.com/posts/548723638608102/ EDIT: Here's more info: http://www.datacenterknowledge.com/archives/2014/09/15/facebook-turned-off-entire-data-center-to-test-resiliency/ http://www.datacenterknowledge.com/archives/2014/09/15/faceb...