Fault Tolerant Systems May Encounter Problems with Windows NT Service Pack 3

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Article ID: 171295 - View products that this article applies to.
This article was previously published under Q171295
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SYMPTOMS

With the FirstWatch program, transition failures have been observed that require the use of CLARiiON's Trespass utility. For example, the system may start in Online Primary mode, but any attempt to change into Dual mode fails. The Ha.log file contains errors that occurred while using Trespass. You may also notice that the Scsi.exe, Clarscsi.exe, and Diskcfg.exe programs do not display LUNs (logical unit numbers), which Trespass needs to access.

The CLARiiON Agent Service may report problems in the event log. The following two events messages have been logged:
ERROR: Opening Device: , 1:0:0.
Is the device configured correctly?
After these events, attempting to select the host in ArrayGuide reports the following error:
Could not connect to the chassis, check device name in fw31a's agent configuration file.
ATF failures have also been observed.

CAUSE

This problem is caused by changes in the way Windows NT handles the SCSI LUN enumeration in Service Pack 3.

RESOLUTION

Perform the following steps to resolve this problem:
  1. To resolve this problem, obtain the latest service pack for Windows NT 4.0 or Windows NT Server 4.0, Terminal Server Edition. For additional information, click the following article number to view the article in the Microsoft Knowledge Base:
    152734 How to Obtain the Latest Windows NT 4.0 Service Pack


    For your convenience, the English version of this post-SP3 hotfix has been posted to the following Internet location. However, Microsoft recommends that you install Windows NT 4.0 Service Pack 4 to correct this problem.
    ftp://ftp.microsoft.com/bussys/winnt/winnt-public/fixes/usa/NT40/hotfixes-postSP3/scsi-fix
    NOTE: Service Pack 3 must be applied to Windows NT 4.0 prior to applying this fix.

  2. For your convenience, the English version of this post-SP3 hotfix has been posted to the following Internet location. However, Microsoft recommends that you install Windows NT 4.0 Service Pack 4 to correct this problem. WARNING: Using Registry Editor incorrectly can cause serious, system- wide problems that may require you to reinstall Windows NT to correct them. Microsoft cannot guarantee that any problems resulting from the use of Registry Editor can be solved. Use this tool at your own risk.

    Install the new Scsiport.sys and go to the following registry key:
          HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Disk\ 
    						
  3. For your convenience, the English version of this post-SP3 hotfix has been posted to the following Internet location. However, Microsoft recommends that you install Windows NT 4.0 Service Pack 4 to correct this problem. Add the following new value to the above registry path to activate the new code:
          Value Name = ScanDisconnectedDevices
          Data Type = REG_DWORD
          Data = 1
    						
Microsoft has confirmed that this is a problem in Windows NT 4.0 and Windows NT Server 4.0, Terminal Server Edition. This problem was first corrected in Windows NT 4.0 Service Pack 4.0 and Windows NT Server 4.0, Terminal Server Edition Service Pack 4.

MORE INFORMATION

The third-party products discussed here are manufactured by vendors independent of Microsoft; we make no warranty, implied or otherwise, regarding these products' performance or reliability.

Properties

Article ID: 171295 - Last Review: October 7, 2013 - Revision: 1.2
APPLIES TO
  • Microsoft Windows NT Server 4.0, Terminal Server Edition
  • Microsoft Windows NT Workstation 4.0 Developer Edition
  • Microsoft Windows NT Server 4.0 Standard Edition
Keywords: 
kbnosurvey kbarchive kbhotfixserver kbqfe kb3rdparty kbbug kbfile kbfix kbwinnt400sp4fix KB171295

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