Trying to create a large-scale, private cloud array can be a headache, since it often involves bringing disparate networking, server and storage systems together in one not-so-happy union. Wouldn't it be nice to have a box that could do most of the hard work? Nebula thinks its newly launched Nebula One controller will do the trick. The rackmount device's Cosmos OS quickly turns ordinary servers from the likes of Dell or HP into a unified cloud computer that centers on the more universal OpenStack platform, and which can also talk to