To create a RAID 1 using the single SSD, you will need to reinstall the Operating System enabling the RAID option at a BIOS level.
at OS installation, RAID at BIOS level had been already selected.Thats why I am wondering if this now classifies as RAID-ready... which means adding a second SSD and everything could be just fine?
Here is the solution:
Just install the new SSD and boot Win7 normally. Enter the Intel Rapid Storage Technology tool and create a new RAID1 volume (you can choose which disks should be member). Creation is done in a blink, migrating the data takes a couple of minutes (2 120 GB disks, 330 series, SATA-3 6Gbit/s).
Very nicely solved.. thanks to the designers of this system!