Impact on the System

Controller enclosure BBUs provide power failure protection for controller enclosures, allowing data to be saved in the event of a power failure. If controller enclosure BBUs malfunction, cache data cannot be saved to disks upon power failure, resulting in data loss.

Reference Standard

If controller enclosure BBUs are working properly, the following items are true on DeviceManager:

• Health Status of BBUs is Normal, and Running Status is Online.
• No BBU alarm appears on the Current Alarms page.

Procedure

1. Choose System > Hardware.
2. Click the desired BBU.

   The detailed information about the BBU is displayed.

3. View the BBU information in the dialog box that is displayed.

   Table 15-17 describes the parameters.

   Table 15-17 BBU parameters

   Parameter	Description
   Health Status	Health status of the BBU. Possible values are: Normal: The functionality and operating performance of the BBU are normal. Faulty: The BBU is working improperly. Insufficient power: The power level of the BBU is low though its operating performance is normal.
   Running Status	Running status of the BBU. Possible values are Online, Charging, and Discharging.
   Discharges	Number of times when the BBU is discharged.
   Firmware Version	Firmware version of the BBU.
   Production Date	Production date of the BBU.
   Electronic Label	Electronic label of the BBU.

Follow-up Procedure

If a BBU alarm appears on the Current Alarms tab page, select and handle the alarm according to its details and repair suggestions.