Microsoft Windows NT 4.0 Guide Manual de usuario descargar pdf (Pagina 50)

Microsoft

Windows Server

™

2003 White Paper

Windows NT 4.0 Server Upgrade Guide 45

Migrating to Active Directory

A directory stores information related to network resources and makes it possible to locate and

manage these resources. A directory service is a network service that identifies all resources on a

network and makes them accessible to users and applications. A directory service differs from a

directory in that it is both the source of the information and the service making the information

available to users.

Active Directory is the directory service included in Windows Server 2003. Active Directory

includes the directory, which stores information related to network resources, and all the services

that make this information available. Active Directory relies on DNS, so any Active Directory

migration must carefully consider this service.

Benefits of Active Directory

Windows Server 2003 enhances administrators’ abilities to efficiently configure and manage

Active Directory in organizations of various sizes. Windows Server 2003 Active Directory service

enables organizations to control the costs of managing their computer-based directories by using

a single, unifying directory service. With Active Directory, employees can quickly locate

information about network resources and administrators can easily manage the network from a

central location. Ultimately, the efficiencies that Active Directory includes can reduce IT costs and

help improve organizational productivity.

Windows Server 2003 makes it much easier to use Active Directory and includes new features,

such as cross-forest trusts, the ability to rename domains, and the ability to deactivate attributes

and classes in the schema so that their definitions can be changed. Organizations can also enjoy

the following benefits:

• Find information quickly. At the simplest level, Active Directory is a database of information

about users, computers, printers, and just about any computer-related item in the enterprise.

Users benefit from Active Directory by being able to quickly find what they need—anywhere in the

network. For example, Active Directory can serve much like a telephone directory by automatically

locating the nearest printer, freeing users from having to know the correct name or address path

of the printer.

• Use improved management tools. The improved upgrade and management tools along with the

ability to rename Active Directory domains make deploying Active Directory significantly easier

than when the directory service was first introduced in Windows 2000 Server.

Upgrading and planning are more efficient with the following features:

• Active Directory Migration Tool (ADMT) 2.0. It is now easier to upgrade to Active Directory

through a number of improvements that have been made to ADMT 2.0. The tool now allows

passwords to be upgraded from Windows NT 4.0 to Windows 2000 and Windows Server 2003

domains or from Windows 2000 to Windows Server 2003 domains.

• Domain renaming. Administrators can now change the DNS or NetBIOS names of existing

domains in a forest while keeping the resulting forest well formed. Administrators also have

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