Part 3: Windows Server 2003 (Best web site) Upgrades and Migrations
Part 3: Windows Server 2003 Upgrades and Migrations Chapter 7 Microsoft Windows Server 2003 Inside Out An important limitation for upgrading servers that run Windows 2000 is that Windows Server 2003 cannot be installed on a dynamic disk partition in a certain situation if Windows 2000 was installed on a disk without any partitions and configured directly as a dynamic disk volume, Setup will fail. You must first revert the dynamic disk partition to basic or remove the partition during setup and create a new basic partition. Dynamic disk partitions can be reestablished (by using Disk Administrator) once Windows Server 2003 is installed. Choosing Domain and Forest Functional Levels In evaluating the upgrade or migration path, determine the forest and domain functional levels needed for your network environment (functional levels determine the types of domain controllers and features supported). Table 7-2 shows the types of domain controllers supported by each functional level. Table 7-2. Domain Controllers and Functional Levels Types of Domain Controllers on Network Domain Functional Level Forest Level Windows NT 4, Windows 2000, Windows Server 2003 Windows 2000 Mixed Windows 2000 Windows 2000, Windows Server 2003 Windows 2000 Native Windows 2000 Windows NT 4, Windows Server 2003 Windows Server 2003 Interim Windows Server 2003 Interim Only Windows Server 2003 Windows Server 2003 Windows Server 2003 Advantages to Windows Server 2003 forest functional level include replication enhancements (Active Directory, global catalog, group membership), deactivating schema objects, dynamic auxiliary classes, forest-level trusts, domain renaming, linked value replication, InetOrgPerson password handling, and tracking the last logon time. Inside Out Setting the functional levels Upgrading the first domain controller from Windows 2000 to Windows Server 2003 assigns the forest functional level to Windows 2000 and the domain functional level to Windows 2000 Mixed. For an upgrade from Windows NT 4 to Windows Server 2003, the domain and forest are set to Windows Server 2003 Interim function level. 222
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