I was wondering if there is a FAQ floating around somewhere which talks about the mac OSX raid features? I am doing some video editing of large files (some HD) - and am looking to add two more internal 400Gb SATA hard disks. From reading the documentation - it isnt clear weather or not the mirrored raid config will increase performance the same way that striped raid does? I know that mirrored raid is the best for automatic backup - but not optimal for capacity (which is OK) ->I rather like the auto-backup feautre of mirrored RAID, but need the extra performance as well. Do i have to use striped raid for that extra 'bump' in performance? Also - what are folks recommending for SATA disks these days? i was looking at the hitachi 400g 7k400 drive. are those any good/reliable? thanks for any advice!