Microsoft KB Archive/195636

= Fiber System Loses SCSI Reservation After Multiple Restarts =

Article ID: 195636

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0, Terminal Server Edition
 * Microsoft Windows NT Server 4.0 Enterprise Edition
 * Microsoft Cluster Server 1.1

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This article was previously published under Q195636



SYMPTOMS
A potential problem exists after multiple reboots of a clustered system using a fiber channel array as the shared storage system. After multiple restarts, the SCSI reservations may lose a drive array because of repeated SCSI resets.



CAUSE
This problem is because a reservation conflict occurs in the Disk.sys driver.



RESOLUTION
A new file entry solves the problem by enumerating the following information in Disk.sys STATUS_DEVICE_BUSY (the status that indicates a reservation conflict).

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



STATUS
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.

Additional query words: Disk.sys SCSI RESERVATION MSCS kbDSupport server cluster

Keywords: kbbug kbfix KB195636

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