NexGen Storage is a computer data storage company based in Louisville, Colorado. NexGen was founded in 2010 by John Spiers and Kelly Long, the original founders of LeftHand Networks.It was venture-backed, with investment from Next World Capital, Grotech Ventures, and Access Venture Partners. On April 25, 2013, at Storage Field Day 3, Fusion-io announced their acquisition of NexGen Storage.