HP StorageWorks Storage Mirroring Evaluation Guide (T2558-96326, April 2009)

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Configuring failover
If you are interested in continuing your evaluation to test high availability, use the remaining
instructions in this chapter to configure failover, simulate a failure, and perform failback and a
restoration.
1. The Failover Control Center can be started from within the Management Console or from the
Windows desktop.
 From the Management Console, select Tools, Failover Control Center.
 From the Windows desktop, select Start, Programs, Storage Mirroring, Failover Control
Center.
2. Select a failover target from the Target Machine list box.
3. Click Login to login to the selected target.
4. Select a source machine to monitor by clicking Add Monitor. The Insert Source Machine dialog
box appears in front of the Monitor Settings dialog box.
5. Type in your source machine name and click OK. The Monitor Settings dialog box appears. This
is where you set your monitoring configuration.
6. Select the source to be monitored by marking the check box to the left of the source server
name in the Names to Monitor tree.
7. By default, Failover Hostname is disabled. This option automatically removes the host SPN
(Service Principle Name) from Active Directory on the source and adds it to Active Directory on
the target. If you are using Active Directory, enable this option or you may experience problems
with failover.
8. Failback Hostname returns the host SPN on the source and target back to their original
settings on failback. If you are using Active Directory, enable this option or you may experience
problems with failback.
9. If you are failing over or failing back hostnames, you need to specify an Active Directory user
that has update privileges within Active Directory. Click Credentials and identify a user and the
associated password that has privileges to create and delete SPNs. The username must be in the
format fully_qualified_domain\user. Click OK to return to the Monitor Settings dialog box.
At this point, in terms of your evaluation, your failover configuration is complete because you will be
using the default settings for the remaining options. But while you are viewing the Monitor Settings
dialog box, notice the flexible configuration options available to you. The following diagram points
out the key features of the Monitor Settings dialog box.
NOTE: The Active Directory account password cannot be blank.