I once came across this question “Impact of running DCPROMO without installing AD DS role in Windows Server 2008 or 2008R2“. Lots of people gave their own views of how DCPROMO relates to AD DS. I see this as simply understanding what actions DCPROMO & AD DS role does when ran. DCPROMO is simply the Active Directory Domain Services installation wizard which resides in System32 folder in Windows. When you run the dcpromo command on a Windows Server 2008 or 2008R2 machine, this will not only install the Active Directory schema hence making the server a domain controller but will also install the AD DS tools.
The steps detailed below covers the installation process for building and configuring a Windows 2008 or 2008 R2 Active Directory and DNS implementation, and is a prerequisite for any Active Directory implementation as detailed in the Microsoft product service description. The diagram below shows how I have setup my AD network into separate network segments meaning we need to open up the AD ports. Requirements: 1. Ensure that the following services are started and set to Automatic start-up “DHCP Client” and “TCP/IP NetBIOS Helper“ 2.