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Physical Structure  «Prev 
Physical structure

Physical Structure of Active Directory

Document your Active Directory site names and locations. Active Directory is the directory service for Windows 2000 and Windows Server 2003 family of products. It stores information about objects on the network. An Active Directory site is defined as one or more well-connected TCP/IP subnets. A well-connected TCP/IP subnet has a fast, reliable network connection.
The logical structure of your organization is represented by the following Active Directory components:
  1. Organizational units
  2. Domains
  3. Trees
  4. Forests
The physical structure of your organization is represented by the following Active Directory components:
  1. Active Directory sites (physical subnets)
  2. Domain controllers
When planning your SMS hierarchy design, consider your Active Directory logical layout (hierarchical forest arrangement and domain structure), and its physical structure (Active Directory site topology). Later, when planning your SMS deployment and configuration, become familiar with the more granular details of the logical structure, such as organizational units, because these can help determine how you organize collections, distribute software, and perform queries in SMS.
Document your physical Active Directory structure and domain structure before you begin the planning phase.


Each domain controller belongs to a specific site
Each domain controller belongs to a specific site

Site location of a domain controller determines its place in the topology of Actice Directory
Site location of a domain controller determines its place in the replication topology of Actice Directory

Domain controller's site location is also an important factor in logon authentication, directory queries
Domain controller's site location is also an important factor in logon authentication, directory queries




A domain controller's site location is established during the installation of AD
A domain controller's site location is established during the installation of AD


When you create the first domain controller in Windows 2000 network, the Active Directory Installation Wizard creates the initial physical structure that consists of a single site called Default-First-SIte-Name
When you create the first domain controller in Windows 2000 network, the Active Directory Installation Wizard creates the initial physical structure that consists of a single site called Default-First-SIte-Name


A domain controller's site location remains consistent unless an administrator changes its assignment
A domain controller's site location remains consistent unless an administrator changes its assignment