Microsoft Windows NT 4.0 Guide Bedienungsanleitung PDF herunterladen (Seite 58)

Microsoft

Windows Server

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2003 White Paper

Windows NT 4.0 Server Upgrade Guide 53

Upgrading a Windows NT Domain to Active Directory

After the high-level planning phase, it is time to start implementing the plan. The upgrade process

involves the following steps:

• Plan and implement a namespace and DNS infrastructure.

• Determine forest functionality.

• Upgrade the server running Windows NT Server 4.0 or earlier PDC.

• Upgrade any remaining BDCs.

• Convert groups.

• Complete the upgrade of the domain.

Planning and Implementing a Namespace and DNS Infrastructure

Namespace refers to the naming convention that defines a set of unique names for resources in a

network, such as DNS, a hierarchical naming structure that identifies each network resource and

its place in the hierarchy of the namespace, and WINS, a flat naming structure that identifies each

network resource using a single, unique name.

DNS is required for Active Directory. DNS is a hierarchical, distributed database that contains

mappings of DNS domain names to various types of data, such as IP addresses. DNS enables

the location of computers and services by user-friendly names, and it also enables the discovery

of other information stored in the database.

When setting up a namespace, it is recommended that you first choose and register a unique

parent DNS domain name that can be used for hosting your organization on the Internet, for

example, Microsoft.com. Once you have chosen your parent domain name, you can combine this

name with a location or organizational name used in your organization to form other subdomain

names. For example, a subdomain can be added for resources used by the information

technology group at your organization, called itg.example.microsoft.com domain tree. Additional

subdomain names can then be formed using this name, such as edi.itg.example.microsoft.com, a

subdomain for a group of programmers working on electronic data interchange (EDI) in this

division. Likewise, another group of workers providing support in this division might use

support.itg.example.microsoft.com.

Before beginning the upgrade from Windows NT Server 4.0 to the Windows Server 2003 Active

Directory service, ensure that you have designed a DNS and Active Directory namespace and

have either configured DNS servers or are planning to have the Active Directory Installation

Wizard automatically install the DNS service on the domain controller.

Active Directory and DNS Integration

Active Directory is integrated with DNS in the following ways:

• Active Directory and DNS have the same hierarchical structure. Although separate and

implemented differently for different purposes, an organization's namespace for DNS and Active

Directory have an identical structure. For example, microsoft.com is both a DNS domain and an

Active Directory domain.

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