Active Directory

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The Active Directory Installation
You use the Active Directory Installation wizard to perform the following tasks: * Adding a domain controller to an existing domain
* Creating the first domain controller of a new domain
* Creating a new child domain
* Creating a new domain tree
To launch the Active Directory Installation wizard, you can use the Windows 2000 Configure Server wizard to start the Active Directory wizard or you can run Dcpromo.exe. When you run the Active Directory Installation wizard on a stand-alone server, it steps you through the process of installing Active Directory directory services on the computer and creating a new domain controller. As you install Active Directory directory services, you can choose whether to add the new domain controller to an existing domain or create the first domain controller for a new domain. Adding a Domain Controller to an Existing Domain

If you choose to add a domain controller to an existing domain, you create a peer domain controller. You create peer domain controllers for redundancy and to reduce the load on the existing domain controllers. Creating the First Domain Controller for a New Domain

If you choose to create the first domain controller for a new domain, you create a new domain. You create domains on your network to partition your information, which enables you to scale Active Directory directory services to meet the needs of very large organizations. When you create a new domain, you can create a new child domain or a new tree. If you choose to create a new child domain, the new domain is created as a child domain in an existing domain. When you create a new domain tree, the new domain does not become part of an existing domain. You can create a new tree in an existing forest, or you can create a tree and start a new forest. NOTE

Running Dcpromo.exe on a domain controller allows you to remove Active Directory directory services from the domain controller and demotes the domain controller to a stand-alone server. If you remove Active Directory directory services from all domain controllers in a domain, you also delete the directory database for the domain, and the domain no longer exists. The Database and Shared System Volume

Installing Active Directory directory services creates the database and database log files, as well as the shared system volume. Table 4.3 describes the purpose and location of these files. Table 4.3 Types of Files Created by Installing Active Directory Directory Services Type of file created| Description|

Database and database log files| The database is the directory for the new domain, and the log file temporarily stores changes made to the Active Directory database.The default location for the database and database log files is systemroot\Ntds.For best performance, place the database and the log file on separate hard disks.| Shared system volume| The shared system volume is a folder structure that exists on all Windows 2000 domain controllers. It stores scripts and some of the Group Policy objects for both the current domain as well as the enterprise. The file replication services use the shared system volume to replicate files and Group Policy information among domain controllers. The default location for the shared system volume is systemroot\Sysvol.The shared system volume must be located on a partition or volume formatted with NTFS.| Replication of the shared system volume occurs on the same schedule as replication of Active Directory directory services. As a result, you might not notice file replication to or from the newly created system volume until two replication periods have elapsed (typically, 10 minutes). This is because the first...
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