Hp Storage Mirroring V5.1 Software User Manual download pdf (Page 21)

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Initiating Failover

In the event your source has failed, you can failover to your target

allowing for immediately availability. Failover can be initiated

through the Full-Server Failover Manager client. You also have the

option of initiating failover by using a command line interface.

Starting failover using Full-Server Failover

Manager

When a failover condition is met, you will want to start failover. Additionally, you can start it without

a failover condition, as long as protection is enabled. For example, you may want to force failover

when upgrading to a better source server.

To start failover, click Failover

. You can also select Actions, Failover.

If Full-Server Failover determines there is a possibility that the data on the target is incomplete, you

will be warned before failover begins. If you proceed with failover, the state of the source will be

unknown until failover is complete. The best case scenario would be a missing data file, while the

worst case scenario would be missing system state data that causes the server to be unusable or

unbootable.

 Shutdown source server if running—If the source is still running, Full-Server Failover Manager

can stop it. Although, if Full-Server Failover Manager cannot communicate with the source, the

shutdown command will fail. This option prevents network conflicts in those cases where the

source and target are still both running and communicating, such as a forced failover.

 Use live data—Select this option to use the data on the target at the time of failover.

NOTE: If you are testing failover and your source is a domain controller, do not let the domain

controller communicate with any other production domain controllers after failover.

Otherwise, when the original source domain controller is brought online after the test, it

may create a USN rollback scenario if the test domain controller was allowed to

communicate with other production domain controllers.

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Hp Storage Mirroring V5.1 Software User Manual Page 21