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GPT disks in a Windows Server 2003 server cluster are not migrated to a Windows Server 2008 failover cluster when you use the "Migrate a Cluster" wizard
Article ID: 947711 - View products that this article applies to.
Beta InformationThis article discusses a beta release of a Microsoft product. The information in this article is provided as-is and is subject to change without notice.
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The GUID partition table (GPT) disks are not supported in a Windows Server 2003 server cluster if you do not apply hotfix 919117. As soon as you apply this hotfix to all nodes in the Windows Server 2003 server cluster, GPT disks can be added as physical disk resources in the cluster.
Note Hotfix 919117 is the Windows Server 2003 post-Service Pack 2 (SP2) hotfix that is described in Microsoft Knowledge Base article 919117.
GPT disk support is available in Windows Server 2008 failover clusters.
This article describes the fact that GPT disks in a Windows Server 2003 server cluster are not migrated to a Windows Server 2008 failover cluster when you use the "Migrate a Cluster" wizard.
As soon as you add the failover clustering feature and create a cluster in Windows Server 2008, you can migrate some resources from a Windows Server 2003 server cluster to the Windows Server 2008 failover cluster. One of the resources that you can migrate is the physical disk resource.
During the migration process, you must decide about storage. If you decide to reuse the storage that is being used by the Windows Server 2003 server cluster that is being migrated, you must know the information in this article. However, if you migrate to new storage, the information in this article does not apply.
To migrate settings from a Windows Server 2003 server cluster to a Windows Server 2008 failover cluster, you use the "Migrate a Cluster" wizard in the Failover Cluster Management snap-in. This wizard gives you a step-by-step process to connect to a Windows Server 2003 server cluster that is being migrated. The wizard also lets you make selections before you perform the migration. You can preview a pre-migration report that outlines what resources in which resource groups are eligible for migration.
In this report, a Windows Server 2003 cluster resource group that contains a physical disk (that is, a GPT disk) is shown as being eligible for migration. The migration process will finish successfully, and the resources will be in an "offline" state until the following actions occur:
When this occurs, events that resemble the following events are logged in the System log:
Event Level: Error
Event Level: Error
This failure occurs because the way that GPT disk GUIDs are handled was changed in Windows Server 2008. In Windows Server 2003, the GUID was a hash. However, in Windows Server 2008, the GUID is not a hash.
To recover from this failure, follow these steps:
(http://support.microsoft.com/kb/284134/ )By default, server clusters do not support GPT shared disks in Windows Server 2003
919117For more information about how to migrate settings from a cluster that is running Windows Server 2003 to a cluster that is running Windows Server 2008, visit the following Microsoft TechNet Web site:
(http://support.microsoft.com/kb/919117/ )A hotfix is available that adds support for GUID partition table (GPT) volumes that are larger than 2 terabytes on a Windows Server 2003-based server cluster