Doing a google serach for 'rebuilding JBOD array' returns some results...

http://forums.nvidia.com/lofiversion/index.php?t16706.html

http://forums.overclockers.com.au/showthread.php?t=496849

That second one points to software called GetDataBack:
http://www.download.com/GetDataBack-Data-Recovery/3000-2094_4-10061631.html

Might help...

M80v2 | VP150v2 | QS8v2
SVS Pci+ 20-39
Emotiva UMC-1 & LPA-1
M22ti + T-Amp, in the Office