In the previous section, we have seen how to deploy a new domain. Active Directory domains without any redundancy are prone to lots of problems in the environment. So, Windows administrators design their Active Directory environment to be redundant by deploying multiple domain controllers. The necessity to add multiple domain controllers increases on a frequent basis when the load increases or a new office is opened. This section helps you to understand what is required to add additional domain controllers to existing Active Directory environment using PowerShell.

As we have seen earlier, the Install-ADDSDomainController cmdlet is available in the ADDSDeployment PowerShell module and we can leverage it to build additional DCs. The prerequisite for installing a new DC is installing an AD DS role. You can follow the installation of AD DS roles, which we covered in the previous section. Once you have the AD DS components installed, we can promote it as DC...