I have had a strange failure. I upgraded the Bios on my machine. The Raid 5 setup I had on the data drives then failed. In looking at the failure the following things are going on:
How can I 're-join' these drives withour losing all my data?
You should read this thread: http://communities.intel.com/thread/3351?start=0&tstart=0
In particular the post from adgriffi - I've experienced this and the instructions there worked (however, I would advise you to take images of your disks before hand just in case).