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MegaRAID SAS Software User Guide Chapter 5: MegaRAID Command Tool
| Battery Backup Unit-Related Properties
5.11.5 Display Current BBU Properties Use the command in the following table to display the current BBU properties for the
selected controller(s).
5.11.6 Start BBU Learning Cycle Use the command in the following table to start the BBU learning cycle on the selected
controller(s). A learning cycle is a battery calibration operation performed by the
controller periodically (approximately every three months) to determine the condition
of the battery.
5.11.7 Place Battery in Low-Power
Storage Mode
Use the command in the following table to place the battery into Low-Power Storage
mode on the selected controller(s). This saves battery power consumption.
Table 57: Display Current BBU Properties
Convention MegaCli -AdpBbuCmd -GetBbuProperties
–aN|-a0,1,2|-aALL
Description Displays current properties of the BBU. The information displays in the
following formats:
BBU Properties for Adapter: x
Auto Learn Period: xxx Sec
Next Learn Time: xxxx Sec
Learn Delay Interval=<value>: Value in hours, not greater than 168 hours (7
days)
Auto-Learn Mode=<value>: Value can be 0, 1, or 2.
NOTE: If the battery type is IBBU08, then the BBU mode is displayed
as a part of GetBbuProperties.
Table 58: Start BBU Learning Cycle
Convention MegaCli -AdpBbuCmd -BbuLearn -aN|-a0,1,2|-aALL
Description Starts the learning cycle on the BBU. No parameter is needed for this option.
Table 59: Place Battery in Low-Power Storage Mode
Convention MegaCli -AdpBbuCmd -BbuMfgSleep -aN|-a0,1,2|-aALL
Description Places the battery in Low-Power Storage mode. The battery automatically
exits this state after 5 seconds.
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