Avago Technologies Cache Protection for RAID Controller Cards - Manual (Page 129)

Avago Technologies
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Cache Backup Products for MegaRAID SAS+SATA RAID Controllers User Guide
May 2015 Chapter 3: Monitoring and Managing Battery Backup Units and CacheVault Modules
Replacing Battery Backup Units
3.1.6.1 Setting Automatic Learn Cycle Properties
The Set Automatic Learn Cycle Properties dialog appears when you select Set Automatic Learn Cycle Properties
on the Advanced Battery Management dialog.
The small red arrow at the bottom of the dialog indicates that you can scroll down to view more options.
NOTE The red arrow appears when there is too much information to display
in one dialog. The amount of information that can be displayed in one
dialog depends on the capabilities of the HII browser.
To generate an event as a reminder to start a learn cycle manually, highlight the field next to Generate an event...,
and press the spacebar.
To enable or disable automatic learn cycle mode, highlight the field next to Learn Cycle, press Enter, and make a
selection from the pop-up menu.
The Day, Time, No. of Days, and No. of Hours fields are also user-selectable through popup menus. The Next Learn
Cycle Time field shows the time of the next learn cycle.
Use the Apply, OK, and Cancel fields at the bottom of the selections (not visible in this figure) to apply, confirm or
cancel any changes to the learn cycle options.
3.2 Replacing Battery Backup Units
Avago recommends that you replace the BBU unit every year or after 500 learn cycles, or as indicated by MegaRAID
management tools when the battery status indicates replacement is required. The warranty on battery packs is one
year.
After you install a new BBU unit, Avago strongly recommends that you use one of the MegaRAID configuration utilities
to perform a learn cycle to make sure the new backup battery unit functions properly. For instructions, see
Section 3.1,
Monitoring and Managing BBU Units with the MegaRAID Configuration Utilities , on page 112 .
3.3 Disposing of Battery Backup Units
WARNING Do not damage the battery pack in any way. Toxic chemicals can
be released if it is damaged.
The material in the battery pack contains heavy metals that can contaminate the environment. Federal, state, and
local regulations prohibit the disposal of rechargeable batteries in public landfills. Be sure to recycle the old battery
packs properly. Avago reminds you that you must comply with all applicable battery disposal and hazardous material
handling laws and regulations in the country or other jurisdiction where you are using the BBU unit.
Remaining Capacity Remaining capacity of the battery.
Auto-learn Mode Indicates whether auto-learn mode is enabled or disabled. A learn cycle is a battery calibration
operation that the controller performed periodically to determine the battery condition. This
operation cannot be disabled.
Next Learn Cycle Time Date and hour of the next scheduled learn cycle.
Property Description