Hi there, I'm running a MBP 13.3 mid 2012 on ML 10.8.3 and now upgrading a Samsung 840 Pro SSD. Can you please suggest me the best configuration please? I intend to install SSD to Main bay and HDD to the DVD bay, however I'm afraid that: If HDD is installed at DVD bay, will Sudden Motion Sensor be able to stop that HDD in case of vibration? Should I enable the function "Put the hard disk(s) to sleep when possible to sleep HDD? If SMS isn't functional then I may need to get HDD back to Main bay and install SDD to Optical bay. Will that SSD still reach highest performance (i.e SATA 3 6Gbps Thank you guys very much!