Just as it says in the title. I'm gearing up to shoot a lot of video for the first time and I'd like to use one SSD (drive 1) to record straight from the camera, one (drive 2) to copy drive 1 to at the end of the day, and one (drive 3) to backup drive 2. Of course, I could copy drive 1 to drive 2 via a PC and then repeat for drive 3, but it would be faster if I could copy 1 to 2 and 3 simultaneously. Better still would be to do it independently of the PC so all the copying doesn't bog it down for doing other things. Thanks.