This article was previously published under Q243601
This article has been archived. It is offered "as is" and will no longer be updated.
When you perform online backups of large information stores with the Database Scrubbing option enabled during backup, the backup process may time out.
Scrubbing the database during backup requires the metadata to be preread. On large databases, it may take longer than the default value of two minutes to preread the metadata. This causes the backup process to time out prematurely.
To resolve this problem, obtain the latest service pack for Exchange Server 5.5. For additional information, click the following article number to view the article in theMicrosoft Knowledge Base:
191014 XGEN: How to Obtain the latest Exchange Server 5.5 Service Pack
Microsoft has confirmed that this is a problem in Microsoft Exchange Server version 5.5 SP2. This problem was first corrected in Exchange Server 5.5 Service Pack 4.
For additional information on the Database Scrubbing option introduced in Microsoft Exchange Server 5.5 Service Pack 2, click the article number below to view the article in the Microsoft Knowledge Base: