<1>

Configure the server's network card properties to be a static IP address from the same subnet or subnet which is routable within a network. As directory services rely on DNS server, you need to properly point where the service is running.

<2>

Join the server to the domain. So first it will be a domain member, once it is a domain member like any other station in the network, then we can promote it and configure it and an additional Domain Controller.

<3>

Logon to the server with a username that has an administrative roles in Active Directory

<4>

Open Server Manager and click on Add roles and features

If this is a remote site and you don't have IT staff in it, or you don't want anyone to commit any changes to your Domain Controllers, then select the checkbox Read only domain controller (RODC).

You can define if you want to install this Domain Controller from Install From Media (IFM) , if you have it, and point from which DC replication should be done. When you do not specify, server will choose the best location for AD database replication.

If you have no special requirements for that, keep the default setting as : Any domain controller

<5>

Lastly, on each server/workstation within the target domain require a NIC properties configuration update DNS to point to the new Domain