Hi All, I have a mac pro 2009 (2.26GHz Quad) thats recently started to fall behind. The machine is used as a photo workstation, and is home to some ten-thousand raw-files from a 5Dii. Daily usage consist of organising in Aperture 3 and further processing in PS5. I find that looking through photos in Aperture is really slow, and opening/saving PSD files is insane slow since filesizes usually lie between 200-400MB. I've decided to put in a SSD to use as a boot drive, and separate OS and applications from the rest of the content that is headed to another/other disk(s). My question to you is how I can best store the raw files and PSD files on one or more other disks for better performance. Currently SSD's are too expensive to store anything other than the OS and applications. Could two or more HDD's in raid 0 be a viable solution as storage for images? I've been reading around for some time about the pros and cons of raid 0, and have come to understand that frequent and small read/write operations will not see any dramatic difference in performance compared to a single disk. In my case, however, where read/write actions will be fewer but in return with larger files, what would the performance difference be? If raid 0 with traditional 3.5 "HDD's is the way to go, what drives you would recommend? I back-up on regular basis and automatically with an external firewire drive using time machine, so I'm not too afraid of data loss. In advance, thanks for all help!