I am experimenting with the 'referenced pictures' in Aperture, but it looks like it is also possible with iPhoto.
So the idea is the following: Rather than storing the pictures on your Mac, you store the pictures on your NAS, but your iPhoto / Aperture library is on your local Mac. I have tried this with Aperture on a couple of pictures and that seems to work.
And the trick is that you then store / organize your source files on your NAS in the same directories / project names as you use in your Aperture structure. And you put the pictures in a directory that is picked up by the Media Server, in my case Logitech Media Server 7.7, on DSM 4.0.
The advantage: automatically when you add pictures, they get indexed, and that is OK as long you want to source pictures
1. I have not found a way to keep the 'version' in other words the modified/changed pictures on the NAS and still reference those. I also don't think this is possible, as the changed in Aperture or stored in a database, not within the picture JPG or RAW file itself.
2. you miss of course the nice ratings and search features of Aperture.
So my idea that I am going to experiment with
1. store all my source pictures on the NAS via referenced files, and this in directories
2. store some of my best/modified/ pictures (if I have any
) on seperate directory on the NAS.
If you google 'referenced files Aperture' or 'referenced files iPhoto', you can find a lot around this topic. Hope this is of any use.
Cheers, Geert, Brussels