An update is available that lets nonvolatile (NV) cache commands be sent to SCSI-class devices in Windows Vista or in Windows Server 2008

Intel Turbo Memory (ITM) is an integrated nonvolatile (NV) caching solution. ITM works together with Intel Matrix Storage Manager(IMSM), and it introduces support for caching of a RAID device. This NV caching solution requires that NV cache commands be sent to the RAID device.

In Windows Vista, the NV cache commands can be sent only to HDC-class devices. However, many RAID products are Small Computer Standard Interface (SCSI)-class devices. Therefore, the NV cache commands cannot be sent to these devices.

An update is available to let NV cache commands be sent to SCSI-class devices.

Update 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. 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.

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.

Prerequisites

To apply this update, the computer must run one of the following:

• Windows Vista
• Windows Vista Service Pack 1
• Windows Server 2008

Restart requirement

You must restart the computer after you apply this update.

Hotfix replacement information

This update does not replace any other previously released 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 Vista, x86-based versions

Windows Vista SP1 and Windows Server 2008, x86-based versions

Windows Vista, x64-based versions

Windows Vista SP1 and Windows Server 2008, x64-based versions

Windows Server 2008, Itanium-based versions

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

For more information about The "Device: hdc" component, visit the following Microsoft Web site:For more information about Intel Turbo Memory, visit the following Intel Web site: Microsoft provides third-party contact information to help you find technical support. This contact information may change without notice. Microsoft does not guarantee the accuracy of this third-party contact information.

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.
For more information, click the following article number to view the article in the Microsoft Knowledge Base: