First off, I did search and parts of this overall process but nothing exceptional. Please add to this in comments with your own experience or links to other posts. The goal of this thread will to hopefully create kind of an all-encompassing tutorial. I'll try to add more as I go through and install mine later next week. Choosing a Setup? The unibody macbook pro can take up to 12.5mm height hard drive. FYI: A lot of the optical bay "caddy's" only accept a 9.5mm hard drive. Be aware of this if you upgraded to a 1TB hard drive early on as some were 12.5mm. Performance: The 2011 unibody Macbook Pros can utilize a SATA III (6 Gb/s connection) in the hard drive bay, taking advantage of the fastest SSDs. There is some confusion over the optical bay and the speeds. General Rule of Thumb for SSD/HDD Placement: Pre-2011 models HD in main bay with SSD in optical bay SATA II (3.0 Gb/s) connection. (Both HDD/Optical bay are SATA II) 2011 Models SSD in main Hard drive bay with SATA III (6.0 Gb/s) connection, hard drive in optical bay, varied SATA connection depending on model. There seems to not be a clear answer on if your computer supports SATA III in the optical bay. This only comes into play if you plan on doing having Sata 3 SSD drives in both available slots. View this OWC article for a little more in-depth information dealing with the 2011 models and SATA III in the optical bay. Also, it seems as thought the optical bay doesn't have a sudden motion sensor to protect a hard drive from bumps or drops. However, several hard drives have this built into it to make up for it. 2012 Models - Fully support SATA III (6 Gb/s) in both the HDD bay and the Optical Bay. I'd recommend just leaving your HDD in place (more sound proof, less installing) and put your SSD in the optical bay. Visit the thread for a more detailed explanation on SSD connection, types, trim support, etc. SSD Buying Guide Hardware Optical Bay to Sata options: Official "Expensive" Options OWC Data Doubler - $59.99 MCE Optibay - $49.99 (Superdrive enclosure +$29.99) Cheap Alternatives - Highly Recommended (View this thread for more info and success stories on going with the Hard Drive Caddy.) Amazon 3rd Party - Hard Drive Caddy Installing guides and tutorials OWC (Macsales) DataDoubler install tutorial video iFixit Picture walkthrough for replacing hard drive and optical drives ***One major tip when removing the ODD, have the appropriate size screw driver, don't be afraid to push down harder than expected to loosen then screw. There is a risk of stripping the screw when trying to remove it the first time. Take your time, align the screwdriver with the screw and try to get it done on the first attempt. I almost stripped one of the 3 screws holding the ODD in place on my 13" mbp, but just barely removed it.*** Installing Methods TIPS NEEDED HERE Clean Install on SSD + Add files on own I plan to go this route. It will take more time, but I feel like there are weird things going on with my current setup that I don't want to use migration assistant and have any of the settings get transferred. Basically I'm going to manually transfer files over after I have booted from the SSD. How to make a Bootable Mac OS X Lion USB Drive Files to remember: Contacts (iCloud)? iTunes (save play count, album artwork etc) Safari or other bookmarks (iCloud) Mail Folders Applications and Plugins Any others??? Clean Install on SSD + Migration Assistant Copy "Clone" existing HD to SSD Programs: Carbon Copy Cloner - Free Superduper - Free and Paid Version Clonezilla - Free Linux Based. **Allows cloning of Windows and Mac Partitions** Directions here. File Setup: Since the price of an SSD is still considerably more than an HDD, the dual setup allows you to keep your operating system on the faster SSD drive and store all of you "other" files on the slower HDD. The default User location will be located on your SSD by default. The problem is that this is the location where all of your iTunes, Photos, Movies are located. It is a good idea to move these files to the HDD. There are a couple of ways to do this. The easiest, but least beneficial way, is to move your whole home folder onto the secondary HDD drive. Here is an good tutorial with a few screenshots showing how to the home folder location: How to move you home folder in OS X This is more advanced (uses terminal) method, but recommended. This allows you to keep some of your cache files in your User folder located on the SSD. Here is a great article talking about only moving part of the home folder onto the secondary hard drive. Backup Methods: Time Machine Carbon Copy Cloner: I went this route. I partitioned 150GB (I realize now I'd decrease this to 128GB as I'll never have my SSD filled completely) on my 750GB HDD for my 128GB SSD backup. I went this route because I wanted to be able to boot from it in the event that my SSD failed. I set up a schedule for a weekly backup every sunday in the evening. It only copies the files changed, and any deleted files it will move to an archive folder which will be deleted as I need more space. So theoretically, I have ~22GB of flex space for deleted files if my SSD was completely full. So far it has worked quick and flawlessly. I highly recommend this method.