Hello, I installed a datadoubler sold OCW to my MBP 8,2 and installed a 2TB drive and encrypted the device. My first drive is a SSD 1TB It turns that I was unable backup my drive with either TimeMachine or DataBackup 3. I called OCW and asked them for some support and their answer was WRONG and didn't make any sense! "Based on the model computer you have the issue is more than likely a communications issue between the drive and the motherboard causing the problem. Your computer is one of those that is rated for either 3 or 6GB/s and is more than likely having an issue with the communication. " "you may want to try replacing the sata cable. " Actually what is happening is the second drive is not revertible. But the first primary drive is revertible and therefor can be backed up while encrypted. internal drive will always be revertible because it knows data will need to be moved to and from your system. Any data going to or leaving your 2nd drive must first enter your Mac through the primary drive. And therefor to be able to backup an encrypted 2nd drive using the datadoubler has to decrypted first! Bummer!!!!!