I have dual Samsung 850 Pro 512gb SSD's installed in my Late 2011 MacBook Pro.. They have both been tested as working properly at SATA-III (6G).. I make music full-time in Logic X and do a lot of heavy processing. My plan so far has been to have one of the drives with all the core Mac stuff/Logic X/Plugins/Important System Stuff, and the other drive with all my audio samples/Projects/Plugin Libraries/etc.. I want to ensure that both drives work as quickly and efficiently as possible.. Is it necessary to install OS X on both drives, or is it just good enough to have it on the one? Should I be installing OSX on both of my internal SSD's for maximal performance? Thanks!