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What does the user need to do?

To minimize impact of failover

The HP StoreOnce Backup system has been designed around the principle of no single point of

hardware failure. To gain the most benefit from this:

• Configure the external network or fibre channel fabric to enable any failover port configuration

to be available in the same network or fibre channel fabric for any nodes in the cluster

• Configure the VTL(s) on the service set on the node to use both Fibre Channel connections for

its robotics presentation. The drives within the VTL(s) will be evenly distributed between the

two Fibre Channel ports to allow the backup software to still access a number of drives and

the robotics should one of the ports connections fail.

• Configure the backup application to handle time-outs intelligently

To enable emails and alerts

An alert is automatically generated if failover takes place. The email system should be configured

to automatically notify relevant users that this has happened so that appropriate action can be

taken:

• To investigate what has caused the node to fail and resolve the issue

• To check that backup and restore jobs complete successfully and reschedule from the backup

application, if necessary

• To prepare to invoke failback after the issue has been resolved

Running failback

Once the issue has been resolved and the failed node is available again, it must be brought back

into the cluster configuration. This must be invoked manually:

• HP StoreOnce B6200 Backup systems only: From the Failback this server button on the

appropriate Hardware page of the GUI.

• Using the CLI command hardware failback nodeX where X is the node identifier. See

the HP StoreOnce Backup system CLI Reference Guide for more detail.

What does the user need to do? 171

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