Active Directory Directory Services
The Directory is a stored collection of information about
objects that are related in some way or another. It identifies all resources on a network.
It makes network resources accessible to users and applications.
The Directory is scalable from a small installation to a huge
one. It can expand as an organization grows.
The Directory stores resources such as:
These resources are known as
objects. By organizing itself into sections, the directory of each domain can store as many
as 10 million objects.
- user data
- security policies
Active Directory makes up the directory service. It
stores information in a centralized location. A directory service is both the source of the
information and what makes the information available to users. A directory service both
manages the identities and negotiates the resource relationships between resources. In order
to ensure the integrity and privacy of the network, a directory service must be integrated
with the management and security of the operating system.
Novell and Banyan have used directory services for years. Active Directory Directory
Services has features and terminology that are very similar to that of Novell Directory
Services(NDS). It can share information with Novell NDS.
Active Directory Directory Services separates the logical
structure of the domain hierarchy from the physical structure. You organize resources in a
logical structure. This enables you to find a resource by its name rather than by its
physical location. The network's physical structure becomes transparent to users. A network
resource is represented by a distinct named set of attributes and called an “object”.
An administrator can log on to one computer and administer
objects on any computer in the network.
A domain is a logical grouping of servers and other
network resources under a single domain name. In domains resources are organized
hierarchically. Each domain includes one or more domain controllers.
A domain controller stores a complete replica of the
domain directory. All domain controllers in the domain are peers. If you make a change to
any domain controller it will replicate to all domain controllers in the domain.
Active Directory uses DNS for its name system. Active
Directory Directory Services can exchange information with any application or directory that
uses Lightweight Directory Access Protocol (LDAP) or HTTP. You must install and configure
the DNS Service for Active Directory to work.
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Friday, September 17, 2004 10:56:03 AM