So, I've ditched my old Mac Pro and MacBook Air for the new rMBP - but I'm currently a little stuck on storage issues, so would appreciate anybody's insight. My Aperture library is 245GB currently, and expanding. This won't fit on the rMBP's 256GB SSD, and even if I had bought the 512GB model it would end up full. As such, I put the library on a 1.5TB USB2 external...and watched Aperture crash and burn. Performance is okay, but imports take forever due to the lovely beachball of processing the new imports - talking about 30mins on 150 images. As such, I need a faster external solution, but I don't know which is best for Aperture? 1) USB3 drive, 1-2TB 2) Promise RAID Thunderbolt, 4TB 3) Thunderbolt drive, 1-2TB Does Aperture need the speed the Promise RAID provides? Will it be noticeably faster than operating off a standard 1-2TB USB3 or TB drive? Anybody else using the Promise in this way for their Aperture libraries?