Write operations to a shared folder on a Windows 2000-based computer over a Fibre Channel connection is slower than expected

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When you write data from a Microsoft Windows 2000-based client computer to a shared folder on a Windows 2000-based server over a Fibre Channel connection, the write operation may be performed more slowly than expected. You do not experience these symptoms during local write operations.
This problem occurs if you overwrite an existing file in the shared folder. For example, this problem may occur if you open the file in the shared folder from the remote client computer and then save a new version of the file to the server. During the remote write operation, Cache Manager performs an additional read operation before data is written to the hard disk. The additional read operation causes slower than expected performance.

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 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.


This hotfix requires Windows 2000 Service Pack 4 (SP4).

Restart requirement

You must restart your computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix 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---------------------------------------------------------16-Apr-2004  18:44  5.0.2195.6920   238,416  Srv.sys19-Jun-2003  20:05  5.0.2195.6697    83,728  Srvsvc.dll       17-Apr-2004  02:56                    7,640  Kb839406.cat
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For additional information about how hotfix packages are named, click the following article number to view the article in the Microsoft Knowledge Base:
816915 New file naming schema for Microsoft Windows software update packages
For additional information about terminology that is used to describe Microsoft software updates, 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

Article ID: 839406 - Last Review: 10/26/2013 21:07:16 - Revision: 2.5

Microsoft Windows 2000 Server, Microsoft Windows 2000 Advanced Server

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