Part 3: Windows Server 2003 Upgrades and Migrations (Web hosting bandwidth)
Part 3: Windows Server 2003 Upgrades and Migrations Upgrading to Windows Server 2003 . Global catalog Although not one of the roles identified as an operations master, the global catalog is a required role performed by at least one domain controller in every forest (and commonly implemented with at least one global catalog per site). A global catalog contains a reference to, and a partial attribute set for, every object in the Active Directory forest. In addition to the operations master roles and global catalog there is a server role involved in managing intersite replication for Active Directory. Servers supporting intersite replication are referred to as bridgehead servers. Converting Windows NT 4 Groups to Windows Server 2003 Groups The Windows NT 4 security groups are upgraded to related groups in Windows Server 2003 as follows: . Windows NT 4 local groups become domain local groups. . Windows NT 4 global groups become global groups. Chapter 8 Note Clients running earlier versions of the Windows operating system continue to work with the upgraded groups, yet they see universal groups as global groups. Troubleshooting Domain local groups are not correctly displayed in Windows NT 4 Windows Server 2003 domain local groups cannot be correctly referenced by Windows NT 4 administrative tools used on member servers running earlier versions of the Windows operating system. You can use administrative tools in the Windows Server 2003 Administration Tools pack (Adminpak.msi file in the I386 folder on the product CD or %SystemRoot%System32 folder after installation) to display the local groups and manage them on servers running earlier versions of the Windows operating system. Performing the Upgrade from Windows NT 4 Upgrading a Windows NT 4 domain begins by creating or verifying adequate backups and establishing a private network. . Back up the PDC Prior to beginning the actual upgrade process of the Windows NT 4 PDC, verify that you have tested backups and (at least one) operational BDC for the domain taken offline. . Create an isolated network You might want to take the upgrade off of your enterprise network (or do the upgrade during off- peak hours), so as to prevent user, application, and service access to the domain controller during the upgrade process.
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