So I ordered a 120gb OWC Electra 6g drive to replace the main hard drive in my Macbook Pro 13" 2011 and then I got to thinking... As a result I ordered a Data doubler combined with a second 120gb OWC Electra drive, except this time the 3g cousin as my Macbook Pro's Optical Drive's data slot is only capable of 3g sata. Originally I had thought to use this second drive as a Time Machine backup but realised I have so many external drives that backup is not an issue, especially with an ssd. Eventually I came up with another possible solution, which was to put the two drives into a raid 0 array. From what I believe, (feel free to correct me) doing this may bring the speed of the 6g drive down to match the speeds of the 3g drive, or at least creating some sort of bottleneck. My question is; are there any benefits to be gained from continuing with this proposal or should I scrap the idea? Also I would like to know if there is any speed gain in comparison to the 3g drive on it's own and is it any amount comparable to the 6g drive on it's own if there is any? Please feel free to add any observations, Thanks.