A Volume Shadow Copy Service (VSS) snapshot backup is running on a Microsoft Exchange Server 2007 Cluster Continuous Replication (CCR) cluster. Then, you move the resources from the active node to the passive node while the backup is in progress. In this scenario, the storage group on which you are running the snapshot backup may not mount after the move. Additionally, the following event errors are logged.

Event error 1

Event Type: Error
Event Source: MSExchangeIS
Event Category: Exchange VSS Writer
Event ID: 9617
Description:
Exchange VSS Writer (instance ed23a5b6-dd90-4a50-9234-710923bc8f61:1) failed with error code -2147221233 when processing the backup completion event.

Event error 2

Event Type: Warning
Event Source: MSExchangeRepl
Event Category: Action
Event ID: 2092
Description:
Clustered Mailbox Server: <xxxx> Physical Server: <xxxx>
The database in storage group <server>\<Storage Group> will not be automatically mounted because the number of logs lost was greater than the amount specified by "AutoDatabaseMountDial".
* The log file generated before the move operation or failover was: xxxx
* The log file successfully replicated to the passive node was: xxxx
* "AutoDatabaseMountDial" is set to: Lossless

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Update information

To resolve this problem, download and install Update Rollup 3 for Exchange 2007 Service Pack 1. For more information about Update Rollup 3 for Exchange 2007 SP1, click the following article number to view the article in the Microsoft Knowledge Base:

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

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For more information about Exchange 2007 CCR and about VSS backup, visit the following Microsoft TechNet Web site:

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