I'm installing a 256GB SSD as my main drive on a MacBookPro and a 750GB HDD as my "archive" drive. How can I get the best performance on Aperture? I've heard about people keeping their library on the SSD and the Masters on the HDD. How does that work? Won't reading the masters on the HDD become a performance bottleneck? My biggest Aperture library is 400GB so I can't fit it all on the SSD. My plan A is to run my current Aperture library on the SSD and then every 6 months or so, archive my selects to a library on the HDD. Is there a better solution?