A primary benefits of Read Only Domain Controllers is that the Domain Controller service can be managed like a regular service. It can therefore be stopped and started without rebooting the server. The effect of this is that the Active Directory database (NTds.dit) is offline. While the Domain Controller Services is stopped you can performs actions such as: Defragment the Active Directory Database Perform and authoritative restores of Active Directory objects. For more information on Active Directory Maintenance Tasks and command line, please see the following resource: How To Use Ntdsutil to Manage Active Directory Files from the Command Line in … Continue reading RODC: Effects of being able to start and stop the Domain Controller Service without reboot.