
Microsoft
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Windows Server
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2003 White Paper
Windows NT 4.0 Server Upgrade Guide 47
• Flexible control over the computing environment. Administrators can define and enforce
organizational standards through Group Policy and can rapidly reconfigure Group Policy settings
to adapt to changing business requirements. Group Policy implementations also scale from small
work group environments to high-end data centers and can be used to simulate and validate the
impact of any changes before applying them to production environments.
• Increased productivity. Administrators can manage an entire group of users and IT assets as
easily as managing a single entity. Group Policy helps administrators respond rapidly to required
changes in group configurations or policy enforcements, a benefit that helps organizations run
their IT operations more effectively. Scripting of Group Policy operations can provide even greater
IT workload efficiencies
Windows NT Server 4.0 Upgrade Design and Planning
The Windows Server 2003 Active Directory service is compatible with Windows NT Server 4.0
and includes a mix of operations through which domain controllers running Windows NT Server
4.0, Windows 2000, and Windows Server 2003 can be supported. As a result, organizations can
upgrade domains and computers at an established pace based on the organization's needs.
Active Directory supports the Windows NT LAN Manager (NTLM) protocol used by Windows NT.
This support enables authorized users and computers from a Windows NT domain to log on and
access resources in Windows 2000 or Windows Server 2003 domains. To clients running
Windows 95, Windows 98, or Windows NT that are not running Active Directory client software, a
Windows 2000 or Windows Server 2003 domain appears to be a Windows NT Server 4.0 domain.
For more information, see “Active Directory Clients” in the Windows Server 2003 on-screen Help
and Support Center.
Preparing for Active Directory
Preparing a Windows NT 4.0 domain for Active Directory requires a considerable amount of
planning and education. Windows NT 4.0 administrators must understand the differences
between Windows NT domains and Windows Server 2003 domains. One of the most common
mistakes is to plan the Active Directory domain as if it were a Windows NT domain. In many
cases, the number of domains in an Active Directory domain structure can be reduced through the
use of organizational units.
It takes time to understand the changes that occur when upgrading to Active Directory. One of the
biggest changes is the dependency on DNS. It cannot be emphasized enough how important DNS
is to the health of Active Directory and all the services that make up Active Directory. DNS
implementation must be carefully planned so that it runs properly; otherwise, chances are there
will be problems with the Active Directory services. For more information, the following documents
are recommended:
• DNS and Microsoft Windows NT 4.0 Paper
• Windows 2000 DNS White Paper
(2003 version not available yet)
• DNS and BIND by Paul Albitz and Cricket Liu (O’Reilly and Associates)
The two guides provide a great starter kit into the world of DNS for Windows NT administrators.
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