Got a new blazing fast SSD and an optical drive caddy for a second 7200 rpm drive for audio files. I noticed with the ssd in the original drive spot and the 7200rpm in the caddy the computer had a pretty noticable vibration. I also started to thing that the spinning disk crammed in that caddy might be more prone to shock and heat buildup. So I swapped em. Now the SSD boot drive is in the caddy and the spinning disk is in the original HDD spot. I still feel some vibration but not as much I think. Also, the SSD seems as fast as it did before. Connection is still 6GB for SSD an 3GB for WD Black. Questions.... Is there any performance disadvantage from using the optical bay for my main system disk (ssd)? IN other words, are both ports the same speed? Is my thinking correct that the 7200rpm WD black is more secure and will run cooler in the orignal HDD spot (since the rubber shock mount and not as crammed)? Should I leave the HDD ption sensor and "turn off disks to save power" enabled? I saw it was recommended to disable them in SSD tweaks. THX! BTW, the Vertex 4 M is the fastest drive I have ever witnessed. Way faster than my Crucial M4 and Intel 520. wow!