Load sharing media server clusters can provide continuous access to services during upgrades when you upgrade one server at a time.

The Primary and Secondary nodes in the cluster require special consideration during the upgrade since these nodes have master Content Store components on them serving the data needs of the entire cluster. To provide content access, either the Primary or Secondary server must remain in service during the upgrade. Standard nodes can only connect to Primary or Secondary servers on the same software release. To ensure that the Standard nodes have a connection to a Primary or Secondary server on the same release during the cluster upgrade, the Primary is upgraded first and then the Secondary server is upgraded.

Use the following procedure to upgrade N+1 load sharing clusters: