The clustered mailbox server failed over to the passive node with data loss
Topic Last Modified: 2007-11-16
The Microsoft Exchange Server 2007 Management Pack for Operations Manager monitors the Windows Application log on computers that are running Exchange Server 2007 and generates this alert when the event or events specified in the following Details table are logged.
To learn more about this alert, if you are using Microsoft Operations Manager 2005, do one or more of the following:
From the Operator Console, select this alert, and then click the Properties tab. Review the description of the alert that includes the variables specific to your environment.
From the Operator Console, click the Events tab, and then double-click the event in the list for which you want to review the event description. Review the events that have been logged that meet the criteria of this Operations Manager alert.
To learn more about this alert, if you are using System Center Operations Manager 2007, do one or more of the following:
From the Operations Console, double-click this alert, and then click the General tab. Review the description of the alert that includes the variables specific to your environment.
From the Operations Console, double-click this alert, and then click the Alert Context tab. Review the events that have been logged that meet the criteria of this Operations Manager alert.
Details
Product Name |
Exchange |
Product Version |
8.0 (Exchange Server 2007) |
Event ID |
2091;2092;2094 |
Event Source |
MSExchangeRepl |
Alert Type |
Warning |
MOM Rule Path |
Microsoft Exchange Server/Exchange 2007/Mailbox/Cluster |
MOM Rule Name |
The clustered mailbox server failed over to the passive node with data loss. Some logs were not continuous replicated. |
Explanation
This alert indicates that a clustered mailbox server failed over to the passive node with data loss:
Warning event 2091 indicates that a failover occurred in a cluster continuous replication (CCR) environment where the clustered mailbox server failed over to the passive node with some data loss. The event provides specific details about the missing log files. The event indicates that the replication service could not successfully copy the last log files from the failed active node.
CCR provides an attribute for Mailbox servers that you can use to control unscheduled outage recovery behavior. The AutoDatabaseMountDial attribute has three possible values: Lossless, Good availability, and Best availability. The event message will indicate what value the AutoDatabaseMountDial attribute is set to.
For more information about AutoDatabaseMountDial attributes, see Scheduled and Unscheduled Outages.
Warning event 2092 indicates that an unscheduled outage occurred in a cluster continuous replication (CCR) environment where the clustered mailbox server failed over to the passive node with a mount error on the storage group. This outage occurred because one of the critical cluster resources on the active node failed unexpectedly. The event indicates that the replication service could not successfully copy the specified number of log files from the failed active node.
CCR provides an attribute for Mailbox servers that you can use to control unscheduled outage recovery behavior. The attribute, AutoDatabaseMountDial, has three possible values: Lossless, Good availability, and Best availability. Depending on what value the AutoDatabaseMountDial attribute is set to, the replication service will set the failover behavior accordingly. The event provides specific details about the missing log files.
For more information about the AutoDatabaseMountDial attributes, see Scheduled and Unscheduled Outages.
Warning event 2094 indicates that either a failover occurred or an administrator performed a Move-ClusteredMailboxServer task in the cluster continuous replication (CCR) environment. The current active node that contains the public folder database was not mounted because some log files could not be copied over from the failed active node. The failover settings for a Mailbox server such as the ForceDatabaseMountAfter or the AutoDatabaseMountDial attributes do not apply to a public folder database. A public folder database will not mount if there is a lossy failover. The event provides details on the missing log files.
The Move-ClusteredMailboxServer cmdlet is used to initiate a scheduled outage of a clustered mailbox server between nodes. This situation contrasts with an unscheduled outage when the Mailbox server's host fails.
For more information about the Move-ClusteredMailboxServer cmdlet, see Move-ClusteredMailboxServer.
User Action
To resolve this alert do one or more of the following:
To resolve event 2091, reseed the passive node.
To resolve event 2092, do one or more of the following:
Perform a Restore-StorageGroupCopy task to mount the database. This will eventually require a reseed of the database on the passive node. For more information, see Restore-StorageGroupCopy and How to Seed a Cluster Continuous Replication Copy.
Wait for the passive node to come back online which will make the missing log files available.
View the detailed event description and see whether you can manually copy the log files from the failed node. Then perform a reseed on the passive node.
To resolve the event 2094, do one or more of the following:
View the detailed event description and see whether you can manually copy the log files from the failed node. Then perform a reseed on the passive node.
Wait for the passive node to come back online which will make the missing log files available.
For information about how to perform a reseed, see How to Seed a Cluster Continuous Replication Copy.
For More Information
To search the Microsoft Knowledge Base articles based on criteria that generated this alert, visit the Search the Support Knowledge Base (KB) Web site.
To review Exchange Server 2007 event message articles that may not be represented by Exchange 2007 alerts, see the Events and Errors Message Center.
If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.