Since Raid 1 implements having the exact same copy of the other disk, I don't see why it won't work. The only gotcha would be you probably need to modify MBR. But there are other solutions (like disk cloning) which would be a lot easier to work with than having to wait for your mirrored disk to complete everytime especially if you have exact same hardware.
Note ::: Please, next time, have the title to something sensible and related to your subject. I skip it a few days already when I was short on time but decided to check it out since I have more free time on my hands ( wify at work ).