I have now 1 Vera Edge unit running all the home automation. I would like to have spare Vera unit for case when this one fails or i.e. firmware upgrade destroyes it, so I can swap them. If i purchase second unit, restore the backup of main unit on it, what will happen to z-wave device? Wouldn’t be a problem that in one time there will be two same Vera units with same associated devices? If I will swap those two units in case of failure, how all the associated z-wave device will reinclude to new controller? And last question if I would like to periodically restore backups of main unit to the spare one, do I need to do always factory reset of the spare unit before I restore the unit?