Windows 2003 server web - Part 3: Windows Server 2003 Upgrades and Migrations
Part 3: Windows Server 2003 Upgrades and Migrations Microsoft Windows Server 2003 Inside Out Chapter 8 If you are upgrading a Windows NT 4 domain or domain controller, no previous forest and domain schema exists; thus, Windows NT 4 domains are changed to Windows Server 2003 domains as part of the upgrade process. Nevertheless, you will want to verify you have backups of the domain controller, as well as keep a current functional backup domain controller (BDC) offline and available to restore network functionality in case of abject upgrade failure. Upgrading from Windows 2000 The easiest upgrade process for moving to Windows Server 2003 is upgrading from Windows 2000 Server, because it doesn t require planning the Domain Name System (DNS) and Active Directory namespace, nor does it normally involve restructuring domains or migration of security principals. You must perform a couple of steps to prepare the Active Directory forest and domains for the new schema and changes and additions supplied by Windows Server 2003. Each Active Directory forest that you maintain must be updated first, prior to upgrading any of its domains. Likewise, each domain within a forest must be prepared prior to upgrading any of the domain controllers in the domain. The Windows Setup program (Winnt32.exe) has a new /Checkupgradeonly parameter that enables it to assess the state of a server prior to installation. The Active Directory Preparation Wizard (Adprep.exe), which is used to prepare a Windows 2000 forest and domain for upgrade to Windows Server 2003, is included on the product CD. Before you begin the upgrade process, all existing data (including all Active Directory information) should be backed up to reliable media and kept available for restoration in case of failure during the upgrade process. Further, the media should be tested to verify that you can restore from it. Prior to rolling out Windows Server 2003 in your production environment, the upgrade process should be evaluated on a private network constructed for the purposes of testing. Use a domain controller for the domain in which you ll be starting the upgrade (a domain that is not the forest root). Tip Microsoft recommends that you install Windows Server 2003 as a member server within the forest root domain and let it run for a week or more prior to upgrading the forest and domains. Assess every domain controller in your forest and make sure that it has the required service packs and hot fixes installed prior to beginning the upgrade. For the basic installation and upgrade of Windows Server 2003, all Windows 2000 domain controllers need Service Pack 1 with several Quick Fix Engineering (QFE) fixes, or you can simply install Service Pack 2, which incorporates those fixes. If you must run Windows Server 2003 tools on the Windows 2000 domain controllers, however, Service Pack 3 or later must be installed on those devices. 232
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