Apple has filed for a permit to re-double its 412,000 square-foot existing data center cluster in Reno, Nevada. The site has always had the possibility of expansion available to it, but the new filing indicates that Apple plans to build yet another data center alongside the existing two of roughly similar size. The current facility, which has been online for some time but is not yet listed as officially finished, was called "Project Mills" during construction. The new adjacent site will be known as "Project Huckleberry."