Article ID: 970277 - View products that this article applies to.
In a Microsoft Exchange 2007 Service Pack 1 (SP1) cluster environment, the System Attendant (SA) resource is not brought online or offline during a failover. When this problem occurs, the following events are logged in the Application log:
Log Name: Application Source: MSExchangeSA Event ID: 1031 Task Category: General Level: Error Keywords: Classic Description: One of the System Attendant's task is blocked. Function: ScStopVM
Log Name: Application Source: MSExchange Cluster Event ID: 1020 Task Category: ExRes Level: Error Keywords: Classic Description: Clustered Mailbox Server: <Server name> Physical Server: <Server name> Failed to bring the resource Exchange System Attendant Instance (xxxx) offline due to a timeout.
When the System Attendant resource goes offline, it tries to shut down any child tasks. One child task tries to contact all Public Folder servers in the top level hierarchy. If there are many public folder servers in the Exchange organization, this procedure takes a long time. Therefore, the SA resource times out. Because of this, the SA resource may stay in the "Offline Pending" state on the failed node of the cluster or it may stay in the "Online Pending" state on the node to which it is failing over.
To resolve this problem, install Update Rollup 9 for Exchange 2007 Service Pack 1. For more information about Update Rollup 9 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic:
Description of Update Rollup 9 for Exchange Server 2007 Service Pack 1For more information about how to obtain the latest Exchange service pack or update rollup, see the following Exchange Help topic:
How to Obtain the Latest Service Pack or Update Rollup for Exchange 2007
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 970277 - Last Review: July 17, 2009 - Revision: 1.1