Use the maintenance history to see information about previous maintenance periods. This history shows:
The start and end time of maintenance periods.
The name of the user who initiated each maintenance period.
Whether each maintenance period was scheduled or manual.
What types of alerts were suppressed.
Whether the maintenance periods were planned in advance or not.
In Service Center, click Status > Devices.
Click the link of the device for which you want to view the maintenance history.
Click Maintenance History in the Management menu.