@csanback I prefer my primary domain controller. Though, both are virtualized in Hyper-V and one really isn't faster than the other. The only reason I do this is that I know this DC is always up to date and that is where all changes are made (rarely DCs sometimes do fail to replicate). Although, from my understanding... if that DC is down it will automatically go to the other domain controllers. Not really sure how this impacts login times, but it shouldn't be a big concern as one DC can handle authentication for quite a large organization (though it isn't best practice).