I have a 6 month old Imac 27 inch with two drives. The smaller one is SSD, of which I have used 90 GB of the 250 GB. I also have a 2 TB drive, which has hardly anything. It seems I should be using this mostly to store files. But most of the files I have are either photos OR ITunes stuff, mostly CDs I have ripped. Seems like a waste of the second drive, which of course is slower than the SSD. Should I be using that for Itunes and IPhoto? When I imported pictures from my camera, I did it without using IPhoto first--SD card on my camera to the second disk But of course, when I then brought them into IPhoto, they now appear on the SSD disk. Or is that the way it should be? Should I just use my 2nd drive for backup? I see precious little info about this and was wondering what others do. I also worry about what I will do if/when the SSD card becomes full. Thank you!