SSHD is slow when its cache is less than 12 GB in Windows 8.1 or Windows Server 2012 R2

Applies to: Windows 8.1 EnterpriseWindows 8.1 ProWindows 8.1

This article describes an issue when the SSHD cache is less than 12 GB in Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2. The issue is resolved in hotfix 2969825 that is described in this article and has a prerequisite.

Symptoms


Consider the following scenario:

  • You have a solid state hybrid drive (SSHD) that is running on a Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2-based computer.
  • The SSHD has less than a 12 GB cache.
In this scenario, the computer does not use the caching medium on the SSHD. Therefore, the SSHD appears slow.

Cause


This issue occurs because the SSHD uses a low priority when it performs the speed test.

Resolution


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 this specific problem.

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, submit a request to 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: 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 first install the update 2919355 on Windows 8.1 or Windows Server 2012 R2. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

2919355 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update: April 2014

Registry information

To use the hotfix in this package, 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.

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 8.1 and for Windows Server 2012 R2

Additional files for all supported x86-based versions of Windows 8.1
File propertyValue
File nameX86_948460b65488382bb9a6b6b2a421cd3f_31bf3856ad364e35_6.3.9600.17201_none_278b7f5c34c80715.manifest
File versionNot applicable
File size717
Date (UTC)07-Jun-2014
Time (UTC)18:33
File nameX86_microsoft-windows-s..tenanceservice-core_31bf3856ad364e35_6.3.9600.17201_none_64fb182530931e58.manifest
File versionNot applicable
File size78,941
Date (UTC)07-Jun-2014
Time (UTC)10:50
Additional files for all supported x64-based versions of Windows 8.1 and of Windows Server 2012 R2
File propertyValue
File nameAmd64_0bb5c2e7dabe514a2509a6dbb5780e9e_31bf3856ad364e35_6.3.9600.17201_none_521ce6823c805135.manifest
File versionNot applicable
File size721
Date (UTC)07-Jun-2014
Time (UTC)18:54
File nameAmd64_microsoft-windows-s..tenanceservice-core_31bf3856ad364e35_6.3.9600.17201_none_c119b3a8e8f08f8e.manifest
File versionNot applicable
File size78,945
Date (UTC)07-Jun-2014
Time (UTC)13:16
Additional files for Windows RT 8.1
File propertyValue
File nameArm_77038d1d445fdfa0385ac9384709798c_31bf3856ad364e35_6.3.9600.17201_none_45921784749bb13b.manifest
File versionNot applicable
File size717
Date (UTC)07-Jun-2014
Time (UTC)18:36
File nameArm_microsoft-windows-s..tenanceservice-core_31bf3856ad364e35_6.3.9600.17201_none_64fd8a7d30903d1e.manifest
File versionNot applicable
File size78,941
Date (UTC)07-Jun-2014
Time (UTC)11:16