For Active Directory download, Microsoft ADAM (Active Directory application mode) provides flexible directory enabled application that can be easily downloaded from the Microsoft’s site. However, it is very important to note that before you download, the Active Directory installation requirements must be met. Without complying by the essential requirements, it is nearly impossible to set up a new AD domain or domain controller in the AD.
Following are the pre-requisites before Active Directory download and install:
Installing Active Directory Domain Services (AD-DS)
For Active Directory running on windows server 2008, before you install Active Directory it is important that you install Active Directory domain services (AD-DS) role on the server. The AD DS role enables the Windows server to perform as domain controller and therefore it must be installed earlier to running dcpromo. The steps mentioned below must be followed in order to install the AD-DS through Server Manager/Initial Configuration Tasks method:
Roles can be added from Server Manager and initiated from the Initial Configuration Tasks wizard.
Installing Active Directory
The wizard will perform checks to examine whether the domain name that you entered is already in use on the local network or not.
Pick the right forest function level and the domain function level. Windows 2000 mode is the default, and permits an addition of Windows 2000, Windows Server 2003 and Windows Server 2008 DC servers to the forest you're creating.
The AD DS Installation wizard performs check operation in order to validate appropriate configuration of DNS on the local network. If no DNS server is configured, then probably wizard will prompt you to install DNS on this server.
Note: The first DC must also be the Global Catalog but not a Read Only Domain controller.
The next step that one need to follow is modify the paths for the AD database, log files and SYSVOL folder followed by entering the password for the Active Directory Recovery Mode.
In the Summary window, once you review your selection click Next. After you click Next, the wizard starts creating the Active Directory domain. And, once the procedure gets over all that you need to do is just click Finish and reboot your system. The server now acts as a Domain Controller. However, just in case you feel like testing its functionalities you can use the AD management tools such as Active Directory Users and Computers.