Duplicate Disk Devices Appear in the Disk Management Snap-in (821393)

SYMPTOMS

If you eject or insert disks in a Fibre Channel array (also known as Just a Bunch of Disks [JBOD]) while power to the array is turned off, duplicate disk devices may appear in the Disk Management Microsoft Management Console (MMC) snap-in. For example, Disk 3 may appear two times: One instance may display all the correct partition information, and the other instance may display all the space on the disk as unallocated. In this scenario, both instances of Disk 3 show a status of Online.

Duplicate disk devices may also appear in the Disk Management snap-in if there is a power failure that affects the Fibre Channel disk array.

RESOLUTION

Hotfix Information

A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that this article describes. Apply it only to systems that are experiencing this specific problem.

To resolve this problem, contact Microsoft Product Support Services to obtain the hotfix. For a complete list of Microsoft Product Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

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

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites

No prerequisites are required.

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
   -----------------------------------------------------------
   07-Jul-2003  22:56  2195.6770.297.3   375,728  Dmboot.sys
   08-Jul-2003  00:36  2195.6770.297.3   316,176  Dmconfig.dll     
   07-Jul-2003  22:56  2195.6770.297.3   138,384  Dmio.sys

MORE INFORMATION

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 Naming Schema for Microsoft Windows Hotfix Packages

For additional information, 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

For additional information about supported Fibre Channel configurations, click the following article number to view the article in the Microsoft Knowledge Base:

317162 Supported Fibre Channel Configurations

For additional information about best practices when you use dynamic disks, click the following article number to view the article in the Microsoft Knowledge Base:

329707 Best Practices for Using Dynamic Disks on Windows 2000-Based Computers