The "Compact virtual hard disk" task takes a long time to finish in Virtual Server 2005 (887731)

The information in this article applies to:

Microsoft Virtual Server 2005

SYMPTOMS

When you click Compact virtual hard disk after you inspect a virtual hard disk in Microsoft Virtual Server 2005, the task might take a long time to finish. You might also experience this problem when you merge virtual disks. For example, if you merge a differencing hard disk image with the parent image, the task might take a long time to finish.

CAUSE

This problem can occur if the host operating system is using Intel Physical Addressing Extension (PAE) support. You may want to turn on PAE support if your computer has more than 4 gigabytes (GB) of installed memory.

WORKAROUND

To work around this problem, turn off PAE support in the host operating system. For information about how to do this, review the articles that are listed in the "More Information" section.

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

MORE INFORMATION

For additional information, click the following article numbers to view the articles in the Microsoft Knowledge Base:

283037 Large memory support is available in Windows 2000 and Windows Server 2003

291988 A Description of the 4 GB RAM tuning feature and the Physical Address Extension switch

268363 Intel Physical Addressing Extensions (PAE) in Windows 2000

Modification Type:	Major	Last Reviewed:	12/13/2004
Keywords:	kbPAE kbenv kbtshoot kbServer kbSysSettings kbPerformance kbinterop kbnofix KB887731 kbAudITPRO