Performing the Migration: An Overview

Performing a domain migration from Windows NT or another Windows 2000 or Windows Server 2003 forest requires an existing destination domain (to which you are migrating) as well as an established trust relationship between source and destination domains.

To migrate a Windows NT account domain to Windows Server 2003, you must perform the following procedures, each of which is discussed as appropriate later in this chapter:

  1. Establish the destination domain (which must be running in Windows 2000 Native mode or Windows Server 2003 mode).

  2. Use Active Directory Domains and Trusts to create a trust relationship between the source and destination domains. Be sure to migrate the trusts (by using the Trust Migration Wizard in ADMT) prior to migrating user and service accounts and local groups.

  3. Use the Group Migration Wizard to migrate the global groups to the destination domain. Migrating global groups with users can be a less-bandwidth-intensive means of migrating users because it avoids the enumeration of users, which can take considerable time if there are many.

    Tip

    Migrating distribution groups to a domain that has a security group by the same name results in the migrated distribution group becoming a security group.

  4. Employ the User Migration Wizard to migrate users to the destination domain (existing users in the domain are not affected by this migration process). By default, migrated users are required to change their password upon first logon, and the accounts are locked until passwords are reset. This can present problems if the User Cannot Change Password option is set in the destination domain, because users won't be able to change their password and thus will be locked out of their accounts.

Tip

If migrating a resource domain, use the Service Account Migration Wizard to discover service accounts.

To migrate a resource domain, you must perform these procedures, each of which is discussed as appropriate later in the chapter:

  1. Establish the destination domain.

  2. Create trusts between source and destination domains by using Active Directory Domains and Trusts.

  3. Use the Service Account Migration Wizard to discover service accounts.

  4. Use the Computer Migration Wizard to migrate computer accounts (both servers and workstations). A software agent will reboot the computer; thus, the default startup option must be set to boot to the correct operating system. (You must log on to the source domain as Administrator to use this wizard.)

  5. Use the Security Translation Wizard to migrate user profiles (which you select on the Translate Objects page).

  6. Use the Group Migration Wizard to migrate shared local groups (on the Group Options page, select only the Migrate Group SIDs To Target Domain and the Do Not Rename Accounts options).

  7. Use the User Migration Wizard to move service accounts to the destination domain.

  8. Migrate service account rights by using the Security Translation Wizard, selecting the source domain computers containing the account rights. On the Translate Objects page, click the User Rights and Local Groups options, and on the User Account page, enter the (destination domain) account with Administrator permissions.

  9. Upgrade, then migrate the domain controllers.

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