Microsoft KB Archive/322945

= Disks Are Not Detected Correctly When You Add a Disk As a Cluster Resource on a Cluster Node =

Article ID: 322945

Article Last Modified on 2/19/2007

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APPLIES TO


 * Microsoft Windows 2000 Advanced Server

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This article was previously published under Q322945



SYMPTOMS
In certain situations, you may be unable to add a disk as a cluster resource to a node in a server cluster. When you try to do so, the disk is not detected correctly and it is not listed as Online in the Disk Management snap-in.



CAUSE
This problem may occur in situations where the physical drive number of the disk that you want to add is greater than the disk count, or if the disks are not numbered consecutively in Device Manager. The number of disks that are enumerated is based on the disk count of the node. The Clusdisk.exe program uses the IoGetConfigurationInformation routine to determine the disk count. Clusdisk.exe assumes that disks are numbered consecutively and it includes in the disk count any physical disks on the node that are currently disabled.

For example, this problem may occur in the following scenario:
 * 1) You have a two-node cluster (Node 1 and Node 2), where each node has two local drives that are detected in Disk Management as Disk 0 and Disk 1. All shared disks (Disk 2, Disk 3, and Disk 4) and cluster resources are located on Node 1.
 * 2) You disable a local physical disk on Node 2.
 * 3) Without restarting Node 2, you move the cluster group from Node 1 to Node 2.

In this example, the disk count is 4. Therefore, only physical drive numbers 0 to 3 are detected. Disk 4 is not added and is not listed as Online in Disk Management.



RESOLUTION
A supported fix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Apply it only to computers that are experiencing this specific problem. This fix may receive additional testing. Therefore, if you are not severely affected by this problem, Microsoft recommends that you wait for the next Windows 2000 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Product Support Services to obtain the fix. For a complete list of Microsoft Product Support Services phone numbers and information about support costs, visit the following Microsoft Web site:

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

NOTE: In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The typical support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

The English version of this fix has the file attributes (or later) 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 tool in Control Panel.   Date         Time   Version        Size    File name ---  25-Sep-2002  14:59  5.0.2195.6070  73,040  Clusdisk.sys



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed at the beginning of this article.



MORE INFORMATION
For additional information about how to obtain a hotfix for Windows 2000 Datacenter Server, click the article number below to view the article in the Microsoft Knowledge Base:

265173 The Datacenter Program and Windows 2000 Datacenter Server Product

Additional query words: MSCS

Keywords: kbhotfixserver kbqfe kbqfe kbbug kbfix kbwin2000presp4fix KB322945

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