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Example: Restructuring Active Directory Domains

Updated: June 11, 2014

Applies To: Windows Server 2008, Windows Server 2008 R2

Applies to: Active Directory Migration Tool 3.2 (ADMT 3.2)

Contoso Corporation wants to migrate the Africa domain objects to the EMEA domain. To minimize the impact on users and reduce the time that network traffic is affected, Contoso decided to complete the migration of domain objects in as little time as possible. During the migration, all global groups that are migrated become universal groups until each user who belongs to the group is migrated to the target domain. Because the forest includes domains running at the Windows Server 2003 functional level, only incremental membership changes to the universal groups are replicated to the global catalog.

Contoso administrators set up an extensive test lab to test the migration process before proceeding. They determined by testing the procedures that they could complete the migration process in two weeks. Global and universal groups will be migrated on Monday and Tuesday of the first week. Service accounts will be migrated and services updated on Wednesday. Thursday, Friday, and Saturday are reserved for migrating user accounts. Servers will be migrated on Sunday of the first week. The second week is reserved for migrating servers and workstations. Domain local groups will be migrated at the end of the second week.

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