I have Drives in Raid 0  and I know stupid but stored some very important photography and even a model shoot who is dying for her pics..  It was a transitional thing and I think loading a driver to my Sata6 caused the drives to fail...
 
     Would love any help...  Appears Normal during boot up, Shows GB info but Intel Raid says it failed,  it was on and off fail for a day but hard to extract data...
 
   Any procedures would be lovely...  I do understand computers well,  and Love EVGA's understanding of Quality over Quantity and selling their shirt off for a buck..  They do it right, like it should be and why I give them money with a huge smile..       Like his, except wait thats kinda how I look right now.

There are multitudes of software on the web that can find data on disks that have been formatted even if they haven't been formatted and that is what I would try first. Your raid would probably need to be stable first of all.