Article ID: 301538 - View products that this article applies to.
This article was previously published under Q301538
This article describes how to upgrade a Windows NT Server, Enterprise Edition 4.0 server cluster to a Windows Server 2003 Enterprise Server cluster. Because there is a two version difference between Windows NT 4.0 and Windows Server 2003 in the Cluster service, a rolling upgrade is not supported. This means that the server cluster will be unavailable for client access during the upgrade to Windows Server 2003.
How to UpgradeThe following procedure describes the upgrade to Windows Server 2003. Both nodes in the cluster must be running Windows NT 4.0 Service Pack 5 or higher. Verify that the programs that are running on the Windows NT 4.0 cluster will run in Windows Server 2003 after the upgrade. If you are upgrading a server cluster that contains an IIS or MSMQ resource type, see the online help or the "Getting Started" guide. The following instructions assume two nodes that are labeled NodeA and NodeB. NodeA is upgraded first, followed by NodeB. Before you start the upgrade, verify that all users are disconnected because all cluster resources will be unavailable during the upgrade.
If a rolling upgrade is required, complete a rolling upgrade from Windows NT Server, Enterprise Edition 4.0 to Microsoft Windows 2000 Advanced Server on both nodes in the cluster, and then complete a rolling upgrade to Windows Server 2003 Enterprise Server.
Article ID: 301538 - Last Review: March 1, 2007 - Revision: 6.4
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