Many enterprises assumed it would be best if they deployed multiple Active Directory domains instead of only a single domain. Should your forest have one domain tree or several, one for each country? Should each tree consist of a single domain or a hierarchy of domains? Should your organizational unit hierarchy mirror the organizational structure of your company or should it be based on a network administrative model? For example, let's say your company had offices in several countries and a complex organizational hierarchy. In the beginning when Active Directory was first released as part of Windows 2000 Server, the biggest challenge with implementing Active Directory was how to structure your organization's forest and its domains and organizational units (OUs). But deploying Active Directory also posed some challenges, especially for large enterprises. In fact, shortly after Windows 2000 Server was released Microsoft also released a tool called the Active Directory Migration Tool (ADMT) which helped you identify potential problems prior to starting your migration and even let you consolidate NT domains or convert them into organization units (OU) within the target Active Directory domain. Migrating from Windows NT 4.0 domains to Active Directory was fairly simple and allowed us to take advantage of the new capabilities Active Directory provided. I can still remember migrating our Windows NT 4.0 primary domain controller (PDC) and backup domain controller (BDC) to Windows 2000 Server to create a mixed-mode Active Directory domain which I later on switched to native mode. Active Directory Migration Considerations (Part 8)Īctive Directory has been around a long time-since Windows 2000 Server in fact.Active Directory Migration Considerations (Part 7).Active Directory Migration Considerations (Part 6).Active Directory Migration Considerations (Part 5).Active Directory Migration Considerations (Part 4).Active Directory Migration Considerations (Part 3).Active Directory Migration Considerations (Part 2).If you would like to read the other parts in this article series please go to:

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