dmitryk

Quite a few of the RAID controler have a preamble from few many thousands of sectors before partition table and file system. If you are verse in the hexeditor and partition layouts you can create a new partition which will point to boot sector and encapsulate your old filesystem. WinHex is your friend.
If you like easy way out (assuming that native RAID controller didn't work) you can use varaity of data recovery utilities , e.g. R-Studio, GetDataBack