Hi guys, i have a couple questions... Well i just bought a new referb 15" rMBP with 256gb flash. Well i didnt realize my iPhoto library was so large (145gb) combine that with iTunes and Video i'm at 235gb before i even install any apps. I have heard that you can run your iPhoto library on an external drive. By doing this is it slow to load photos? i'm a bit worried as well about if the external drive fails and would loose all the photos. A good thunderbolt drive with RAID 1 (for data security) or SSD drive is a bit out of my price range right now. i do have a 1tb USB 3.0 drive but its only a 5400rpm drive so im just worried that it will be slow. My number one reason for upgrading to a new rMBP was because iPhoto was so slow on my old 13'' MacBook. Now that i have a good computer i've also thought about upgrading to Aperture as well. I dont like the idea of always having to plug in a external drive to get my pictures but until i have enough to upgrade the flash storage to a 480gb or 512gb that might be my only option. Thoughts?