The upgrade rollback is initiated in two cases:

• Upgrade process of an element fails: Administrator need not rollback upgrade of all the elements. When the element upgrade fails, the system stops the entire upgrade process and displays the failure status on the Upgrade Management page. The entire upgrade process does not roll back. Only the failed element upgrade rolls back.

• Upgrade process of the entire system fails: Admin specifies rollback all when the system upgrade fails. The system stops the upgrade and rolls back the overall upgrade process.