This is my first post on mac rumors and i need some help. the reason I'm in a hurry is i have a project due next week and i need to take care of this. I am currently running a 750gb HDD drive as my main operating system HD on a 2012 2.7ghz I7 macbook pro (non-retina macbook 9.1) with OWC 16gb 1600mgz ram. Additional information: my OS drive would have about 100gb of info on there and my project files and sample libraries are about 200gb of info. I am going to be doing audio editing and music production so its time to upgrade my system. I have two options I'm thinking about and had a few questions about it. Option A: install a 480gb OWC mercury extreme 6gbps SSD hard drive and run everything off of that. Option B: install a 240gb OWC mercury extreme 6gbps SSD hard drive and then taking out my CD drive and moving the 750gb HDD drive over to there and using it as storage only. Now storage is definitely important for me but so is performance. So my question is for option B lets say i was running logic pro and i have all my sample libraries in my HDD drive would it slow logic down if i access them on the HDD? Would it be better if i get a second SSD instead of using the HDD? Is there noticeable speed difference as far as the storage drive goes between the SSD and HDD as a secondary drive? Someone informed me that as far as your system accessing the storage drives it doesn't have anything to do with the hard drive you have but what would effect the speed is the cache and the amount of ram. Is this true? What is your alternative as to the best possible set up i can do with this system? thank you in advance for your help.