Article ID: 939426 - View products that this article applies to.
Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it. Make sure that you know how to restore the registry if a problem occurs. For more information about how to back up, restore, and modify the registry, click the following article number to view the article in the Microsoft Knowledge Base:
(http://support.microsoft.com/kb/256986/ )Description of the Microsoft Windows registry
In Windows Home Server, data may not be migrated or duplicated as expected.
This problem may occur if the Drive Extender feature in Windows Home Server is not working correctly. The Drive Extender feature does not work correctly if one of the following conditions is true:
To resolve this problem, make sure that the Defilter.sys driver, the Windows Home Server Storage service, and the Drive Extender Migrator service are all started. You can do this by performing the procedures in the "Defilter.sys driver" section and in the "Drive Extender Migrator service" section. If these procedures do not resolve the problem, you can try to troubleshoot the problem by viewing the log files that are mentioned in the "Advanced troubleshooting steps" section.
The Defilter.sys driver
Verify that the Defilter.sys driver is startedTo verify that the Defilter.sys driver is started, follow these steps:
How to start the Defilter driverWarning Serious problems might occur if you modify the registry incorrectly by using Registry Editor or by using another method. These problems might require that you reinstall the operating system. Microsoft cannot guarantee that these problems can be solved. Modify the registry at your own risk.
The Drive Extender Migrator service
Verify that the Server Storage service and the Drive Extender Migrator service are started
How to start the services
Advanced troubleshooting stepsIf you still cannot resolve the problem, follow these steps to troubleshoot the problem by viewing the cited log files:
For more information about Windows Home Server, visit the following Microsoft Web sites: