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Module 1: Introduction
to Developing a
Migration Strategy

#

Information in this document is subject to change without notice. The names of companies,
products, people, characters, and/or data mentioned herein are fictitious and are in no way intended
to represent any real individual, company, product, or event, unless otherwise noted. Complying
with all applicable copyright laws is the responsibility of the user. No part of this document may
be reproduced or transmitted in any form or by any means, electronic or mechanical, for any
purpose, without the express written permission of Microsoft Corporation. If, however, your only

Freitas, Christoph Felix, Shaun Hayes, Megan Camp, Richard Maring, Glenn Pittaway, Anne
Hopkins, Bob Heath, Jeff Newfeld, Jim Glynn, Paul Thompson (Mission Critical Software, Inc.),
David Stern, Lyle Curry, Steve Tate, Bill Wade (Wadeware LLC).
Testing Leads:

Sid Benavente, Keith Cotton
Testing Developer:
Greg Stemp (S&T Onsite)
Testers:
Testing Testing 123
Instructional Design Consultants:
Susan Greenberg, Paul Howard
Instructional Design Contributor:
Kathleen Norton

Graphic Artist:
Kirsten Larson (S&T OnSite)
Editing Manager:
Lynette Skinner
Editors:
Marilyn McCune (Sole Proprietor), Wendy Cleary (S&T OnSite), Jane Ellen Combelic
(S&T OnSite)
Copy Editor:
Shawn Jackson

(
S&T Consulting)

Online Program Manager:
Debbi Conger
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This module provides students with the foundation for designing a migration
strategy from Microsoft
®
Windows NT
®
version 4.0 to Microsoft Windows
®

2000 Active Directory
™
directory service. The module introduces the migration
concepts and explains the steps that an enterprise must consider and include in
the overall migration strategy.
There is no lab for this module.
At the end of this module, students will be able to:
„# Explain the phases in the migration planning process.
„# Differentiate between domain upgrade and domain restructure.
„# Explain the importance of planning.

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This section provides you with the required materials and preparation tasks that
are needed to teach this module.
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To teach this module, you need the following materials:
„# Microsoft PowerPoint
®
file 2010A_01.ppt


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7KH#,PSRUWDQFH#RI#3ODQQLQJAn organization may migrate to Microsoft
®
Windows
®
2000 to gain a
competitive advantage in the marketplace or to establish an enterprise
architecture that supports anticipated growth. This module provides a
foundation for designing a migration strategy from Microsoft Windows NT
®
version 4.0 to the Windows 2000 Active Directory
™
directory service. The
module explains the basic steps that an enterprise must consider and include in
the overall migration strategy.
At the end of this module, you will be able to:
„# Explain the phases in the migration planning process.
„# Differentiate between a domain upgrade and a domain restructure.

2
3
3
3
4
4
4Before proceeding with the actual migration, it is important to understand the
process of planning a strategy to migrate from a Windows NT 4.0 domain
structure to Active Directory. Migrating successfully from Windows NT 4.0 to
Windows 2000 requires in-depth planning based on careful analysis of your
current infrastructure. The overall migration strategy will include several phases
and mini-plans. The following are the phases that an enterprise must complete
to successfully develop a Windows 2000 Active Directory migration strategy:
1. Design the required Active Directory forest.
The Active Directory design identifies the migration project’s end goal, the
ideal domain infrastructure for an organization. This phase involves
designing an Active Directory structure that suits your business needs.

For information on designing Windows 2000 Active Directory, see
course 1561B, Designing a Microsoft Windows 2000 Directory Services
Infrastructure.

2. Choose a migration path.
This phase involves carefully comparing your business or migration goals
with the capabilities of each migration path to select a path that meets your
needs. The migration path that you choose will affect the remainder of your
migration planning.
4. Plan deployment of migration strategy.
The final phase of the planning process is the development of a deployment
plan. The deployment plan details the steps necessary to implement the
migration strategy.

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Domain Mi
g
ration
Kerberos
Windows 2000
OU
OU
OU
OU
OU
OU
Kerberos
Windows 2000
Domain
Upgrade
Domain
Restructure
Windows NT 4
1

Restructure
ƒ
Results in fewer, larger domains
ƒ
May reduce administrative overhead
ƒ
Results in fewer, larger domains
ƒ
May reduce administrative overheadIf you assume that the pre-migration environment is the existing Windows NT
4.0 environment, the whole process of migration involves moving from that
environment to Windows 2000 Active Directory.
Performing a Windows 2000 domain migration is a very flexible process. Some
organizations may only upgrade, or upgrade first and then restructure second.
Still others may restructure from the start. The following are two approaches for
achieving migration from Windows NT 4.0 to the desired Active Directory
infrastructure:
„# Domain upgrade. Sometimes referred to as an in-place upgrade or just
upgrade, this is the process of upgrading the primary domain controller
(PDC) and the backup domain controllers (BDCs) of a Windows NT 4.0
domain from Windows NT 4.0 to Windows 2000. Domain upgrade is a
process designed to maintain as much of your current environment as
possible. Upgrade may represent the easiest, lowest-risk migration route
because it retains most of your system settings, preferences, and network
service configurations.
„# Domain restructure. Domain restructure is a process that enables you to
redesign the domain structure according to the needs of your organization.
Although a domain restructure can result in any number of different

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7KH#,PSRUWDQFH#RI#3ODQQLQJ1. What are the phases that an enterprise must complete to successfully
develop a Windows 2000 Active Directory migration strategy?
Designing the required Active Directory forest, choosing a migration
path, developing a domain upgrade or a restructure strategy, and
planning deployment of the migration strategy. 2. Explain the difference between a domain upgrade and a domain restructure.
A domain upgrade is the process of upgrading the Windows NT 4.0
PDC and the BDCs of a domain to Windows 2000 Server. A domain