Microsoft KB Archive/867818

= A new logical unit number is not detected when a logical unit number is removed from a storage device on a SCSI disk array =

Article ID: 867818

Article Last Modified on 7/24/2007

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APPLIES TO


 * Microsoft Windows Server 2003, Web Edition
 * Microsoft Windows Server 2003, Standard Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise Edition (32-bit x86)
 * Microsoft Windows Server 2003, Enterprise x64 Edition
 * Microsoft Windows 2000 Server
 * Microsoft Windows 2000 Advanced Server

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SYMPTOMS
When a logical unit number (LUN) is removed from a storage device on a SCSI disk array in Microsoft Windows Server 2003 or in Microsoft Windows 2000 Server, and a new LUN is available immediately, the new LUN is not detected by the storage device.



CAUSE
When a Fibre Channel cable is pulled between the host and the switch, some I/O requests are delayed. Because the I/O requests are delayed, the device objects that belong to the storage device are not processed correctly. Some third-party multipath failover drivers prevent the SCSI port driver from removing the device objects because there are still outstanding I/O requests that have not been completed.



Windows Server 2003 hotfix information
A supported hotfix is now 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 service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or 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. To create a separate service request, visit the following Microsoft Web site:

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

Prerequisites
No prerequisites are required.

Restart requirement
You do not have to 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.

Windows Server 2003, 32-bit editions
Date        Time   Version            Size    File name      Platform -- 06-Jul-2004 23:56  5.2.3790.186      127,488  Scsiport.sys   x86

Windows Server 2003, 64-Bit Enterprise Edition
Date        Time   Version            Size    File name      Platform -- 06-Jul-2004 22:38  5.2.3790.186      292,352  Scsiport.sys   IA-64

Windows 2000 Server hotfix information
A supported hotfix is now available from Microsoft, but it is only intended to correct the problem that is described in this article. Only apply it to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Windows 2000 Server service pack that contains this hotfix.

To resolve this problem immediately, 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 do not have to 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 -- 13-Aug-2004 17:30  5.0.2195.6968      74,224  Scsiport.sys



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
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

Keywords: kbqfe kbhotfixserver kbwin2000sp5fix kbhowtomaster kb3rdparty kbbug kbfix kbwinserv2003presp1fix KB867818

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