Microsoft KB Archive/928385

= A third-party backup program may ignore one or more local disk drives during a backup operation on a Windows Server 2003-based computer that is running the Cluster service =

Article ID: 928385

Article Last Modified on 7/24/2007

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APPLIES TO


 * Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
 * Microsoft Windows Server 2003, Datacenter Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise x64 Edition
 * Microsoft Windows Server 2003, Datacenter x64 Edition
 * Microsoft Windows Server 2003, Enterprise Edition for Itanium-based Systems
 * Microsoft Windows Server 2003, Datacenter Edition for Itanium-Based Systems

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SYMPTOMS
On a Microsoft Windows Server 2003-based computer that is running the Cluster service, a third-party backup program may ignore one or more local disk drives during a backup operation. This problem occurs if the following conditions are true:  Windows Server 2003 Service Pack 1 or hotfix 894394 is applied. For more information about hotfix 894394, click the following article number to view the article in the Microsoft Knowledge Base:

894394 A program that calls the ClusterResourceControl function may run slowly on a Windows Server 2003 cluster-based computer

 A cluster disk that was previously available is unavailable.



CAUSE
This problem occurs because of an error in the ClusterResourceControl function. In order to retrieve information for a specific cluster disk, the backup program calls this function by using the CLUSCTL_RESOURCE_STORAGE_GET_DISK_INFO control code. However, when the cluster disk is unavailable, the function incorrectly returns a drive letter that is used for a local non-cluster disk. Therefore, a local disk is mistaken for a cluster disk. If the program is configured to back up only local disks, the local disks that are mistaken for cluster disks are ignored.



Hotfix information
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
To apply this hotfix, you must have Windows Server 2003 Service Pack 1 or Windows Server 2003 Service Pack 2 installed. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

889100 How to obtain the latest service pack for Windows Server 2003

Restart requirement
You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

Windows Server 2003 with Service Pack 1, Itanium-based versions


STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information about the CLUSCTL_RESOURCE_STORAGE_GET_DISK_INFO control code, visit the following Microsoft Developer Network (MSDN) Web site:

http://msdn2.microsoft.com/en-us/library/aa367495.aspx

For more information about the terms that are used to describe software updates, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbexpertiseinter kbwinserv2003postsp2fix kbbug kbfix kbhotfixserver kbqfe kbpubtypekc KB928385

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