Quote Originally Posted by medsource View Post
So... you replaced the internal drive, went thru the GUI to the add/drives/mirror section, added the "fresh" internal drive as a mirror and you were prompted to declare one drive as the base (in this case the external), the system churned on the data (for however long it took to propagate the data) and then both drives reported active status (eg blue in the GUI)??? Is that correct???
Well, almost.
Keep in mind that I did not actually perform this, BUT I got the options.
Second, if the internal drive fails, you would replace it with the external mirror. Then buy yourself a new external drive, declare the internal as a base, and the new external drive as a mirror. And on you go.
If you do it the other way around, the unit would complain and not boot when the external drive is absent.

Marc