Retrieve data off broken mirror

I had a mirrored drive dye on my 2k server. Mirrored off HPT370 motherboard raid. I need to desperately get data off the good drive. Attempted to put drive alone on server and boot with no luck, NO OS FOUND error. Can I possibly put this in a production server as a additional drive and retrieve data. What is my best course of action. This is very important. Please help.