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3ware® CLI Guide > CLI Syntax Reference > BBU Object Commands > /cx/bbu test [quiet]

/cx/bbu test [quiet]
This command starts the battery capacity test. The test may take up to 24 hours to complete. During the test, the BBU is not capable of backup operation and the write cache of all units attached to that controller is disabled. Once the test is completed with no error and the BBU status returns to OK, the write cache will be re-enabled.
 
Note: Once started, the test can not be terminated before it completes. Write cache cannot be enabled until the test completes.
AEN (Asynchronous Event Notification) messages are also generated by controllers to notify the user of the command status.
Check for AENs with the alarms command /cx show alarms [reverse]. Using the “reverse” attribute displays the most recent AEN message at the top of the list. (For a list of all AENs, see the user guide that came with your 3ware RAID controller.)

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