So, while playing around with different configurations, and different machine builds.   I noticed it's quite fool proof, if you have previously designated a set of 2 or 4 or # combination number of disk into a disk group.   Then you are free to basically move the same group of disk from computer to computer, or even real DSM Synology boxes, and it won't complain at all, even if you mix the order, and not sequential.   When you plug it back into another machine, it will boot up just fine a