A hotfix that improves the performance of the "AlwaysOn Availability Group" feature in SQL Server 2012 is available for Windows Server 2008 R2

Article ID: 2687741 - View products that this article applies to.
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Symptoms

Assume that you enable the AlwaysOn Availability Group feature in Microsoft SQL Server 2012 on a Windows Server 2008 R2-based failover cluster. However, when you use local and remote Availability Group database replicas, the failover time to the local replica takes longer than expected.

Note This issue occurs because of inter-node communication within the cluster.

Resolution

To resolve this issue, install the following hotfix. This hotfix improves the performance of the AlwaysOn Availability Group feature in SQL Server 2012 so that failover occurs more quickly.

Hotfix information

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

Prerequisites

To apply this hotfix, you must be running Windows Server 2008 R2 Service Pack 1 (SP1).

For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:
976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To apply this hotfix, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.

File information

The global version of this hotfix installs files that have the attributes that are listed in the following tables. The dates and the times for these files are listed in Coordinated Universal Time (UTC). The dates and the times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and the times may change when you perform certain operations on the files.
Windows Server 2008 R2 file information notes
Important Windows 7 hotfixes and Windows Server 2008 R2 hotfixes are included in the same packages. However, hotfixes on the Hotfix Request page are listed under both operating systems. To request the hotfix package that applies to one or both operating systems, select the hotfix that is listed under "Windows 7/Windows Server 2008 R2" on the page. Always refer to the "Applies To" section in articles to determine the actual operating system that each hotfix applies to.
  • 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.
    Collapse this tableExpand this table
    VersionProductSR_LevelService branch
    6.1.760 1 . 21xxxWindows Server 2008 R2SP1LDR
  • The MANIFEST files (.manifest) and the MUM files (.mum) that are installed for each environment are listed separately in the "Additional file information for Windows Server 2008 R2" section. MUM and MANIFEST files, and the associated security catalog (.cat) files, are extremely important to maintain the state of the updated components. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.
For all supported x64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Clussvc.exe6.1.7601.219404,619,77610-Mar-201216:43x64
Cluswmi.dll6.1.7601.21940542,20810-Mar-201216:45x64
Cluswmi.mofNot applicable76,75210-Mar-201203:33Not applicable
Cluswmiuninstall.mofNot applicable17610-Mar-201203:33Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201218:59Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201221:21Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201219:06Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201218:58Not applicable
Cluswmi.mflNot applicable189,43210-Mar-201216:38Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201218:59Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201216:38Not applicable
Cluswmi.mflNot applicable184,39210-Mar-201218:55Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201218:53Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201218:59Not applicable
Cluswmi.mflNot applicable189,75210-Mar-201216:49Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201218:58Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201221:21Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201219:06Not applicable
Cluswmi.mflNot applicable185,43810-Mar-201219:06Not applicable
Cluswmi.mflNot applicable130,27610-Mar-201217:35Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201217:46Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201218:53Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201218:53Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201218:59Not applicable
Cluswmi.mflNot applicable193,19810-Mar-201219:06Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201219:06Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201218:55Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201219:06Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201221:21Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201219:00Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201221:21Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201221:21Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201221:21Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201219:06Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201218:58Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201219:06Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201221:21Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201217:35Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201216:49Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201217:35Not applicable
For all supported IA-64–based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameFile versionFile sizeDateTimePlatform
Clussvc.exe6.1.7601.219407,777,28010-Mar-201221:02IA-64
Cluswmi.dll6.1.7601.21940887,29610-Mar-201221:04IA-64
Cluswmi.mofNot applicable76,75210-Mar-201203:21Not applicable
Cluswmiuninstall.mofNot applicable17610-Mar-201203:21Not applicable
Cluswmi.mflNot applicable189,43210-Mar-201221:00Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201220:59Not applicable
Cluswmi.mflNot applicable189,75210-Mar-201221:09Not applicable
Cluswmi.mflNot applicable130,27610-Mar-201222:11Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201222:04Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201222:11Not applicable
Cluswmi.mflNot applicable173,68410-Mar-201222:11Not applicable

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More information

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

Additional file information for Windows Server 2008 R2

Additional files for all supported x64-based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameAmd64_00d16372aeca47a13d54b738ff21c242_31bf3856ad364e35_6.1.7601.21940_none_4f11d408a36cdaa6.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_0235858ca0eac16f20662402c5f84001_31bf3856ad364e35_6.1.7601.21940_none_63adbf6c372e3b40.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_16229a10696adff3caddd6d1b1138c23_31bf3856ad364e35_6.1.7601.21940_none_ccd7b2779db02889.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_1f236e4aef3d21be59057fba42ef52e2_31bf3856ad364e35_6.1.7601.21940_none_c3ba44a45b866ab8.manifest
File versionNot applicable
File size715
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_214104a1392abeff16c4c1a9aa52b338_31bf3856ad364e35_6.1.7601.21940_none_08e112f1c4584cb9.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_243af53aec411d22c139c07fe27eb6f8_31bf3856ad364e35_6.1.7601.21940_none_4b85c6032e62b69a.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_24a823a39d10a4725a924891806d1f91_31bf3856ad364e35_6.1.7601.21940_none_ba998e8aa82612a6.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_39a244a46cab19f79536c465e9b4d52b_31bf3856ad364e35_6.1.7601.21940_none_31ae45bbde325aad.manifest
File versionNot applicable
File size715
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_3ccb626cdb864e3694a25405f6073b4a_31bf3856ad364e35_6.1.7601.21940_none_d0b6916606df45b9.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_4550f5d1b6d740d318ffb5dff773a55e_31bf3856ad364e35_6.1.7601.21940_none_c3f804b4b6fd0713.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_49bc250f3bd997d74cd274e032078d14_31bf3856ad364e35_6.1.7601.21940_none_ddd199c09259b086.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_5eec8b7639ea569ed1f2d024176f9335_31bf3856ad364e35_6.1.7601.21940_none_4ca0df56e930d3d3.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_5f5bb6cd681572b916bf1384d7e53cd9_31bf3856ad364e35_6.1.7601.21940_none_e67a5ed421dccee4.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_60ab47ad84f9e82b7b76f4552d44819a_31bf3856ad364e35_6.1.7601.21940_none_2257aca9a6b7c6ec.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_6532050651423702439b45fde0c50a1b_31bf3856ad364e35_6.1.7601.21940_none_7c8cfbd70e0713ef.manifest
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File size723
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File nameAmd64_69144d9b1f58fc028548450c834454ce_31bf3856ad364e35_6.1.7601.21940_none_22edecd88eeaf725.manifest
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File nameAmd64_69e11cb0a8d653aa162a7d5130ac9455_31bf3856ad364e35_6.1.7601.21940_none_b8629fb97208a5a9.manifest
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File nameAmd64_6c64f70eec9f1ffb2c2e144fd05cde3c_31bf3856ad364e35_6.1.7601.21940_none_547451d81efda4cb.manifest
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File nameAmd64_78222ca8db077a6b06cbe5295b573f47_31bf3856ad364e35_6.1.7601.21940_none_83d1da9499569f23.manifest
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File nameAmd64_847271405660a62b5d23a3c8db390bfc_31bf3856ad364e35_6.1.7601.21940_none_890ca0092be3dc8d.manifest
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File size723
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File nameAmd64_894c94fcc911ec5c866d494c3ccd85af_31bf3856ad364e35_6.1.7601.21940_none_f0eaa91bfefc1d79.manifest
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File size723
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File nameAmd64_8c9e30fa0c034444c2885ad46eadaa1b_31bf3856ad364e35_6.1.7601.21940_none_3d4eafc5e9852071.manifest
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File nameAmd64_8da6ebcda1b4b995c900dc7375e70a95_31bf3856ad364e35_6.1.7601.21940_none_2406828f24eafb82.manifest
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File nameAmd64_9669b7417522e53043d2a2ac72573e34_31bf3856ad364e35_6.1.7601.21940_none_0196eb23aba3b64f.manifest
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File nameAmd64_974cb679f52d89cf32e98b091a9adf64_31bf3856ad364e35_6.1.7601.21940_none_5cbe46c9af59f5be.manifest
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File nameAmd64_a586e993d8e26dff3ffccfaf7a9ddb70_31bf3856ad364e35_6.1.7601.21940_none_a138e29742aee485.manifest
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File nameAmd64_aed3cb0e831a9640ec2b1d983b5e6f81_31bf3856ad364e35_6.1.7601.21940_none_2eacd05a07c52d27.manifest
File versionNot applicable
File size723
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File nameAmd64_bdd333c13e32fa78af7d136ddfe981d2_31bf3856ad364e35_6.1.7601.21940_none_20ef6f4956752071.manifest
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File size723
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File nameAmd64_c0b76692c543373d033491bbab1162ec_31bf3856ad364e35_6.1.7601.21940_none_94d626347a04d59a.manifest
File versionNot applicable
File size723
Date (UTC)11-Mar-2012
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File nameAmd64_c7087e7b1159ca542e7d64a5b48b7598_31bf3856ad364e35_6.1.7601.21940_none_3bed696b38c579e3.manifest
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File size723
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File nameAmd64_c914f2ea6492d74237c36b2dc887ee0a_31bf3856ad364e35_6.1.7601.21940_none_50d44d43143fc262.manifest
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File size728
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File size723
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameAmd64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.1.7601.21940_none_184ce04dd164dd97.manifest
File versionNot applicable
File size7,438
Date (UTC)10-Mar-2012
Time (UTC)18:08
PlatformNot applicable
File nameAmd64_microsoft-windows-f..overcluster-cluswmi_31bf3856ad364e35_6.1.7601.21940_none_1afad991cfaa7774.manifest
File versionNot applicable
File size6,668
Date (UTC)10-Mar-2012
Time (UTC)18:05
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File nameWow64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.1.7601.21940_none_22a18aa005c59f92.manifest
File versionNot applicable
File size4,604
Date (UTC)10-Mar-2012
Time (UTC)16:48
PlatformNot applicable
Additional files for all supported IA-64–based versions of Windows Server 2008 R2
Collapse this tableExpand this table
File nameIa64_22368c88bb6338b7b214fb9b66784460_31bf3856ad364e35_6.1.7601.21940_none_d9fcaa43be80ca00.manifest
File versionNot applicable
File size721
Date (UTC)11-Mar-2012
Time (UTC)03:05
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File nameIa64_3339d2d60c7ebe356f6da11006f6c75d_31bf3856ad364e35_6.1.7601.21940_none_ea729207f023c314.manifest
File versionNot applicable
File size721
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameIa64_5921400c31d867e2b38d72628636a4a5_31bf3856ad364e35_6.1.7601.21940_none_694417254f6dd048.manifest
File versionNot applicable
File size1,070
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameIa64_60013ec1353dd7f7de478cf3eacdbb84_31bf3856ad364e35_6.1.7601.21940_none_5bef546897ce5b91.manifest
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Date (UTC)11-Mar-2012
Time (UTC)03:05
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File size721
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameIa64_6f46ecbf3a78fde9f815fa1ef5b3a39e_31bf3856ad364e35_6.1.7601.21940_none_97725a931e91e4c2.manifest
File versionNot applicable
File size721
Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameIa64_7214b017a4f163265385d62d1151e70a_31bf3856ad364e35_6.1.7601.21940_none_33d308aa35d6e571.manifest
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Date (UTC)11-Mar-2012
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File nameIa64_98089819982e7828d31a4b429f969904_31bf3856ad364e35_6.1.7601.21940_none_e61f5f85a04ae84c.manifest
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File versionNot applicable
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Date (UTC)11-Mar-2012
Time (UTC)03:05
PlatformNot applicable
File nameIa64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.1.7601.21940_none_bc2fe8c01905755d.manifest
File versionNot applicable
File size7,436
Date (UTC)10-Mar-2012
Time (UTC)21:32
PlatformNot applicable
File nameIa64_microsoft-windows-f..overcluster-cluswmi_31bf3856ad364e35_6.1.7601.21940_none_bedde204174b0f3a.manifest
File versionNot applicable
File size6,666
Date (UTC)10-Mar-2012
Time (UTC)21:30
PlatformNot applicable
File nameWow64_microsoft-windows-f..overcluster-clussvc_31bf3856ad364e35_6.1.7601.21940_none_22a18aa005c59f92.manifest
File versionNot applicable
File size4,604
Date (UTC)10-Mar-2012
Time (UTC)16:48
PlatformNot applicable

Properties

Article ID: 2687741 - Last Review: January 4, 2013 - Revision: 4.0
Applies to
  • Windows Server 2008 R2 Enterprise
  • Windows Server 2008 R2 Datacenter
  • Microsoft SQL Server 2008 R2 Standard
  • Windows Server 2008 R2 for Itanium-Based Systems
Keywords: 
kbautohotfix kbqfe kbhotfixserver kbfix kbsurveynew kbexpertiseadvanced KB2687741

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