Installation guide
Chapter 2. CLI Syntax Reference
106 3ware SATA+SAS RAID Controller Card CLI Guide, Version 10.2
/cx/bbu show status
The /cx/bbu show status command shows the status of the BBU. Possible 
values are as follows: 
Testing. A battery test is currently in progress. This test can take up to 24 
hours to complete. During the test, the BBU is
 not capable of backup 
operation and the write cache might be disabled, deending on the unit’s 
Storsave setting. If the test is completed without detection of a BBU error and 
the BBU status changes to WeakBat or OK, the write cache is re-enabled. If a 
Fault, Failed, or Error occurs during the test, the write cache remains in the 
disabled state until you resolve the problem.
Charging. The BBU is currently charging the battery. The BBU automatically 
starts charging whenever necessary. During charging, the BBU is 
not capable 
of backup operation and the write cache might be disabled, depending on the 
unit’s Storsave setting. After the test is completed successfully and the BBU 
status changes to OK, the write cache is re-enabled. If a FAULT or ERROR 
occurs during the test, the write cache remains in the disabled state until you 
resolve the problem.
Fault. A battery fault is detected. The BBU is not capable of backup operation 
and the write cache might be disabled, depending on the unit’s Storsave 
setting. To re-enable write cache, replace the battery and/or the BBU board as 
soon as possible.
Error. A BBU error is detected. The BBU is not capable of backup operation 
and the write cache might be disabled, depending on the unit’s Storsave 
setting. To re-enable write cache, replace the battery and/or the Battery 
Backup Unit as soon as possible.
Failed. The battery failed a test. In this state, the BBU is not capable of 
backup operation and the write cache is disabled. To re-enable write cache, 
replace the battery and/or the BBU as soon as possible.
WeakBat. The BBU is functioning normally and is online and capable of 
backing up the write cache. However, the battery is weak and needs to be 
replaced.
OK. The BBU is ready, online, and capable of backing up the write cache. The 
unit’s write cache is automatically reenabled, if applicable.
A dash (-) indicates that a battery or a BBU is not installed.










