Scenario as it stands now: I have 3 Macs, 1 MBP one MBA one iMac. All are backed up to a 3TB TC on my network. In addition to this, I have a four bay USB Dock containing swappable HDD's of various size to which I archive recent material. I want to ditch the slow Startech USB dock, so I have purchased a 4X1TB Promise Pegasus Raid array which will be attached to the iMac via T/bolt. I want to retain the TC backup system, it works well, and the TC is used soley for this purpose. Question is....Since I have not used Thunderbolt for anything except target mode once, just how fast is that Pegasus going to be? I have as I see it two choices here: 1) Use the Promise as a dedicated RAID array ( Not keen on this) OR 2) If it really is fast enough, use the 4X1TB Pegasus to store things I'm working on. Question is, can I really use it reliably (And Quickly) to edit video and music in real time? I'm up to my neck in too much hardware so all ideas much appreciated!