At first, a RAID system is in no way a a substitute for a backup system, and that never was it's purpose.
It is somewhat hard for me to really understand your setup. If I understand you right you have a SSD for Win 7, a laptop disk for Linux and a RAID 1 system with two 1,5 TB disks. Is that a software ore a hardware RAID?
Please start from your Mint CD and post the output of