Oftentimes editing slow downs come not from lack of CPU horsepower, but from insufficient hard drive speeds to do multiple streams of video. With the stagnation of the Mac Pro towers, people are trying to plan for a possible future with only external storage solutions. The obvious high-speed connection going forward is Thunderbolt. Here, Ken Stone has a look at one of the first Tbolt RAIDs out there, the Promise Pegasus. It sounds like it’s up to the task.