Recipe 15.1. Creating a New Active Directory ForestProblemYou want to promote a domain controller into an existing forest or create a new forest. SolutionUsing a graphical user interfaceRun dcpromo from a command line or Start On a Windows 2000:
On a Windows Server 2003:
DiscussionTo create a new forest you need to create a forest root domain. To do this, you need to use the dcpromo executable to promote a Windows 2000 or Windows Server 2003 server to be a domain controller for the new forest root domain. The dcpromo program has a wizard interface that requires you to answer several questions about the forest and domain you want to promote the server into. After dcpromo finishes, you will be asked to reboot the computer to complete the promotion process. The two options dcpromo offers to create a new domain are adding the domain to an existing domain tree or starting a new domain tree. If you want to create a new domain that is a subdomain (contained within the same namespace) of a parent domain, you are creating a domain in an existing domain tree. If you are creating the first domain in a forest or a domain outside the namespace of the forest root, you are creating a domain in a new domain tree. Each domain increases the support costs of Active Directory due to the need for maintaining additional domain controllers and time spent configuring and maintaining the domain. When designing an Active Directory forest, your goal should be to keep the number of domains to a minimum. A good test to use before running dcpromo is the dcdiag command with the /test:dcpromo option. This command will examine the existing DNS infrastructure to see if any changes are required to accommodate the new domain controller (DC). With the /test option you must also specify /DnsDomain:<ADDomainName> where <ADDomainName> is the domain name that the DC will be promoted into. Then you need to include an option that specifics the type of operation you plan to perform, which can be one of /NewForest, /Newtree, /ChildDomain, or /ReplicaDC. See the dcdiag help information (run dcdiag /?) for more information.
See AlsoMS KB 238369 (HOW TO: Promote and Demote Domain Controllers in Windows 2000) and MS KB 255248 (HOW TO: Create a Child Domain in Active Directory and Delegate the DNS Namespace to the Child Domain) |