I truly understand your situation, AnilBostonian, but I’m afraid Intel® Rapid Storage Technology does not offer any kind of recovery options. I would recommend you to take your hard drive to a Data recovery center.
You can also search on Google for “data recovery software”. I found this one http://www.easeus.com/. We haven’t used it, but you can try it.
I really hope you can recover all your data.
It probably messed up with your MBR and such, but I don't see how you would have lost all your data with two boots.
You should be able to plugging your drive in another machine to get your data. But OS re-install on the Rampage is gonna be necessary.
Also check out the win-raid forums, they very knowledgeable on the matter..