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HALO (High Availability and Load Optimization)<br />
Cluster Activity<br />
When a cluster is activated, a new Cluster Activity option appears on the Activity menu, and<br />
provides an activity screen displaying the combined activity of all cluster members. To see the<br />
activity for just the current system, use the Activity option from the menu.<br />
Cluster Reporting<br />
<strong>ePrism</strong> reports can be generated for a single system or for all systems in a cluster. The email<br />
database can also be searched on a single system or on the entire cluster. The history and status of<br />
any message can be instantly retrieved regardless of which system processed the message.<br />
See “Viewing and Generating Reports” on page 222 for more information on cluster reporting.<br />
Configuring a New Cluster Console<br />
If you need to assign the Cluster Console role to another system in the cluster, you must login to<br />
the cluster member you would like to use as the Cluster Console and reconfigure the cluster from<br />
the HALO -> Cluster Administration menu. This will essentially deactivate the entire cluster,<br />
and you must add the cluster members again to the cluster once the new Cluster Console is<br />
initialized.<br />
Backup and Restore<br />
You should configure the backup for a cluster member with a unique backup directory for each<br />
cluster system, including the Cluster Console. Separate backup directories are required to ensure<br />
that backups do not inadvertently overwrite the backup from another cluster system.<br />
Restoring from a backup is primarily intended for product recovery after a re-installation or<br />
software upgrade. Restoring clustered systems can potentially cause problems with cluster<br />
configuration and communication, and it is recommended that you use the following procedures<br />
when restoring a member of a cluster system.<br />
See “Backup and Restore” on page 189 for more detailed information on the backup and restore<br />
process.<br />
Restoring a Cluster Member<br />
Use the following procedure to perform a restore on a cluster member system (not the Cluster<br />
Console):<br />
1. From the Cluster Console, remove the member system from the cluster.<br />
2. Disconnect the member system from the cluster network via the network cable.<br />
3. Perform the restore procedure, but only restore Quarantined mail, SSL Certificates, STA,<br />
and Reporting Data (optional). The member will automatically synchronize the rest of its<br />
configuration with the Cluster Console when it is reintegrated with the cluster.<br />
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