As of the latest Avid ISIS software update 4.74 (released Feb 2015)
With Avid beginning to feel the pressure from Adobe, Avid releases its new software update for their ISIS systems. Software update 4.7 allows Adobe Premiere Pro, Final Cut X, Autodesk Smoke and Blackmagic Design Davinci Resolve users to access and work with high res media from the Avid ISIS 7000, 5000 or 2000. The update also includes all the features introduced with its 4.6 update.
Also with this update you can expand the ISIS 5000 or 5500 to house up to 12 storage engines doubling your storage from what used to be only 6 engines.