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Cluster resources fail over before the time expires in the PDORemovePeriod parameter in Windows Server 2008

Consider the following scenario:
  • You connect a Windows Server 2008 failover cluster node to an external storage device.
  • You use Microsoft Multipath I/O (MPIO) to manage the storage device.
  • The storage device is part of the cluster resources.
  • All MPIO paths to the storage device fail, and then the paths recover after awhile. For example, you turn off the storage device, and then you turn it back on after awhile.
In this scenario, the cluster resources fail over unexpectedly before the time in the PDORemovePeriod parameter expires. However, you expect that the multipath pseudo-logical unit numbers (LUNs) will remain active before the time in the PDORemovePeriod parameter expires, even after all paths to the storage device fail.

Hotfix information

Important Windows Vista and Windows Server 2008 hotfixes are included in the same packages. However, only one of these products may be listed on the “Hotfix Request” page. To request the hotfix package that applies to both Windows Vista and Windows Server 2008, just select the product that is listed on the page.

Note Because MPIO is not supported in Windows Vista, this hotfix is only for Windows Server 2008. Although the hotfix packages on the "Hotfix Request" page are marked Windows Vista, they are for Windows Server 2008.

Note If the Microsoft Device Specific Module (MSDSM.sys) is being used with the MPIO solution, you should also apply hotfix 972797.

A supported hotfix is 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 the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if 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. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


No prerequisites are required.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The global 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 Vista and Windows Server 2008 file information notes

  • The files that apply to a specific product, SR_Level (RTM, SPn), and service branch (LDR, GDR) can be identified by examining the file version numbers as shown in the following table.
    VersionProductSR_LevelService branch
    6.0.6000.16xxxWindows VistaRTMGDR
    6.0.6000.20xxxWindows VistaRTMLDR
    6.0.6001.18xxxWindows Vista and Windows Server 2008SP1GDR
    6.0.6001.22xxxWindows Vista and Windows Server 2008SP1LDR
    6.0.6002.18xxxWindows Vista and Windows Server 2008SP2GDR
    6.0.6002.22xxxWindows Vista and Windows Server 2008SP2LDR
  • Service Pack 1 is integrated into the original release of Windows Server 2008.
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately. MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files (attributes not listed) are signed with a Microsoft digital signature.
For all supported x86-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatform
Mpio.infNot Applicable3,76011-Jun-200907:45Not Applicable
Mpio.infNot Applicable3,76011-Jun-200907:42Not Applicable
For all supported x64-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatform
Mpio.infNot Applicable3,76811-Jun-200907:45Not Applicable
Mpio.infNot Applicable3,76811-Jun-200907:44Not Applicable
For all supported Itanium-based versions of Windows Server 2008
File nameFile versionFile sizeDateTimePlatform
Mpio.infNot Applicable3,76411-Jun-200907:43Not Applicable
Mpio.infNot Applicable3,76411-Jun-200907:49Not Applicable
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about software update terminology, 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

Additional file information for Windows Server 2008

Additional files for all supported x86-based versions of Windows Server 2008 and of Windows Vista

File nameFile versionFile sizeDateTimePlatform
Package_for_kb970525_client_1~31bf3856ad364e35~x86~~ Applicable1,36712-Jun-200905:09Not Applicable
Package_for_kb970525_client_2~31bf3856ad364e35~x86~~ Applicable1,69312-Jun-200905:09Not Applicable
Package_for_kb970525_client~31bf3856ad364e35~x86~~ Applicable1,71312-Jun-200905:09Not Applicable
Package_for_kb970525_sc_0~31bf3856ad364e35~x86~~ Applicable1,42112-Jun-200905:09Not Applicable
Package_for_kb970525_sc_1~31bf3856ad364e35~x86~~ Applicable1,69012-Jun-200905:09Not Applicable
Package_for_kb970525_sc~31bf3856ad364e35~x86~~ Applicable1,70112-Jun-200905:09Not Applicable
Package_for_kb970525_server_0~31bf3856ad364e35~x86~~ Applicable1,42512-Jun-200905:09Not Applicable
Package_for_kb970525_server_1~31bf3856ad364e35~x86~~ Applicable1,69412-Jun-200905:09Not Applicable
Package_for_kb970525_server~31bf3856ad364e35~x86~~ Applicable1,71312-Jun-200905:09Not Applicable
X86_mpio.inf_31bf3856ad364e35_6.0.6001.22448_none_1d9941b8a88b1129.manifestNot Applicable1,65912-Jun-200905:17Not Applicable
X86_mpio.inf_31bf3856ad364e35_6.0.6002.22151_none_1f6de1aea5bfd0dd.manifestNot Applicable1,65912-Jun-200905:17Not Applicable

Additional files for all supported x64-based versions of Windows Server 2008 and of Windows Vista

File nameFile versionFile sizeDateTimePlatform
Amd64_mpio.inf_31bf3856ad364e35_6.0.6001.22448_none_79b7dd3c60e8825f.manifestNot Applicable1,66112-Jun-200905:22Not Applicable
Amd64_mpio.inf_31bf3856ad364e35_6.0.6002.22151_none_7b8c7d325e1d4213.manifestNot Applicable1,66112-Jun-200905:22Not Applicable
Package_for_kb970525_client_1~31bf3856ad364e35~amd64~~ Applicable1,37512-Jun-200905:09Not Applicable
Package_for_kb970525_client_2~31bf3856ad364e35~amd64~~ Applicable1,70512-Jun-200905:09Not Applicable
Package_for_kb970525_client~31bf3856ad364e35~amd64~~ Applicable1,72312-Jun-200905:09Not Applicable
Package_for_kb970525_sc_0~31bf3856ad364e35~amd64~~ Applicable1,42912-Jun-200905:09Not Applicable
Package_for_kb970525_sc_1~31bf3856ad364e35~amd64~~ Applicable1,70212-Jun-200905:09Not Applicable
Package_for_kb970525_sc~31bf3856ad364e35~amd64~~ Applicable1,71112-Jun-200905:09Not Applicable
Package_for_kb970525_server_0~31bf3856ad364e35~amd64~~ Applicable1,43312-Jun-200905:09Not Applicable
Package_for_kb970525_server_1~31bf3856ad364e35~amd64~~ Applicable1,70612-Jun-200905:09Not Applicable
Package_for_kb970525_server~31bf3856ad364e35~amd64~~ Applicable1,72312-Jun-200905:09Not Applicable

Additional files for all supported Itanium-based versions of Windows Server 2008

File nameFile versionFile sizeDateTimePlatform
Ia64_mpio.inf_31bf3856ad364e35_6.0.6001.22448_none_1d9ae5aea8891a25.manifestNot Applicable1,66012-Jun-200905:09Not Applicable
Ia64_mpio.inf_31bf3856ad364e35_6.0.6002.22151_none_1f6f85a4a5bdd9d9.manifestNot Applicable1,66012-Jun-200905:09Not Applicable
Package_for_kb970525_sc_0~31bf3856ad364e35~ia64~~ Applicable1,42512-Jun-200905:09Not Applicable
Package_for_kb970525_sc_1~31bf3856ad364e35~ia64~~ Applicable1,52912-Jun-200905:09Not Applicable
Package_for_kb970525_sc~31bf3856ad364e35~ia64~~ Applicable1,70612-Jun-200905:09Not Applicable
Package_for_kb970525_server_0~31bf3856ad364e35~ia64~~ Applicable1,42912-Jun-200905:09Not Applicable
Package_for_kb970525_server_1~31bf3856ad364e35~ia64~~ Applicable1,53312-Jun-200905:09Not Applicable
Package_for_kb970525_server~31bf3856ad364e35~ia64~~ Applicable1,71712-Jun-200905:09Not Applicable
Cluster MPIO
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Article ID: 970525 - Last Review: 09/11/2010 10:21:00 - Revision: 2.1

Windows Server 2008 Standard, Windows Server 2008 Enterprise, Windows Server 2008 Datacenter, Windows Server 2008 Datacenter without Hyper-V, Windows Server 2008 Enterprise without Hyper-V, Windows Server 2008 for Itanium-Based Systems, Windows Server 2008 Standard without Hyper-V

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