Microsoft KB Archive/234544

= Cluster Bottleneck Occurs When a Large Number of Disks Are Involved =

Article ID: 234544

Article Last Modified on 11/1/2006

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APPLIES TO


 * Microsoft Windows NT Server 4.0 Standard Edition
 * Microsoft Windows NT Server 4.0 Enterprise Edition

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This article was previously published under Q234544



SYMPTOMS
"High-end" computer systems (especially large FibreChannel installations) that have a large number of hard disks may experience slow response times.



CAUSE
This is because of the number of times the bus is reset. Each reset process can stop the entire bus for seconds at a time. When a large number of hard disks are involved, this time can grow to minutes.



RESOLUTION
This problem was fixed by reducing the number of bus resets performed, while maintaining the requirement of finding the correct disk device when needed.

To resolve this problem, obtain the latest service pack for Windows NT 4.0. 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

The latest service pack is also available at the following Internet location:

http://www.microsoft.com/windows/servicepacks/



STATUS
Microsoft has confirmed that this is a problem in Windows NT 4.0. This problem was first corrected in Windows NT 4.0 Service Pack 5.

Keywords: kbbug kbfix kbqfe KB234544

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