Microsoft small business knowledge base

Article ID: 195636 - Last Review: February 21, 2014 - Revision: 2.2

This article was previously published under Q195636
This article has been archived. It is offered "as is" and will no longer be updated.


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.


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


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


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.

  • 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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