Not sure if this should be posted in the photography or mac pro section but since it is more of a technical question I posted it here. I'm planning on getting a new mac pro for photographic work that I do (in aperture 3). Currently I have a 1TB external hard drive which is almost full and my camera's images are each about 30MB. I'm thinking I need about 4TB of storage to last me 3 years based on my usage calculations for the last 3 years. I'll be getting an accelsior PCIe SSD for my main drive and active working project but will then be transferring the masters to the 4TB media array after done working on them. Both the system and the 4TB drives will be backed up regularly. For the 4TB array I was thinking of 2 WD Black 2TB drives in Raid 0 as opposed to 1 4TB drive (I already have a backup solution so please do not mention this when replying). I was also thinking that for the performance it might be better to get 3 cheaper 1.5TB drives or 4 cheap 1TB drives. Here's my question: What do you think is the best way to create this media array, ie, what gains can I REALISTICALLY expect in aperture 3 with utilizing a raid array? I really don't see the hard drives being a bottleneck past a 2 drive array but am wondering if anyone thinks differently. And a second question would be which drives would you recommend and why.