Activating a mailbox database copy designates a specific passive copy as the new active copy of a mailbox database. This process is referred to as a switchover.
A switchover involves dismounting the current active database and mounting a passive database copy on the specified server as the new active copy. Before activating a passive copy, confirm that the copy is healthy and current.
To activate a mailbox database copy:
In the left pane of the ESI window, select Applications > Exchange > Applicable Mailbox Server.
Click Mailbox Databases and select the passive database that you want to activate.
In the Actions pane, click Activate Mailbox Database Copy.
In the Activate Mailbox Database Copy page, confirm that the correct passive copy that you want to activate is listed, and then click Next.
Note: Confirm that the passive copy is healthy and current before you make it the active copy.
In the Review Input Parameters page, confirm the parameters, and then click Next.
In the Progress page, click Next.
Note: Click More Information for more progress details. If a problem occurs, an error message appears with options to resume or roll back the process. After the error is resolved, click Resume to resume the process. Click Rollback to revert to the previously executed step.
In the Summary page, click Finish.