You can upgrade Backup Exec on the nodes in a cluster without taking the nodes out of the cluster.
You can upgrade to Backup Exec 12 on nodes in a cluster that use the Desktop and Laptop Option. However, you must ensure that each node had been an active host before you begin the upgrade.
To upgrade Backup Exec on a cluster
Select a node to upgrade and make that node the active Backup Exec cluster node.
Run the Backup Exec installation program on the active node.
Move the cluster group to the next node you want to upgrade, and then run the Backup Exec installation program on that node. All of the resources except for the disk should be offline when moved over to each node for upgrade.
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