I’m using Toast Titanium.
I have a 2TB drive for my videos.
I have another 2TB drive just for my projects.
I keep all my graphics, photos and other stuff in the right FCP Events folder.
I then burn just the Events and Projects folder onto a Blu-Ray disc.
This is where I found out how hard it is to reconnect media using FCPX. I hope that the new version fixes this.