Lenovo ThinkServer RD650, User Manual

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LSI Corporation
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12Gb/s MegaRAID SAS Software User Guide

March 2014
Chapter 4: Ctrl-R Utility
Viewing and Changing Device Properties
4.13.11 Managing BBU Information
If your SAS controller has a BBU, you can view information about it and change some settings.
A learning cycle is a battery calibration operation that the controller performs periodically to determine the condition
of the battery.
Perform the following steps to view and change the battery settings:
1. Navigate to the second Controller Settings screen and select Manage Battery .
The Battery Properties dialog appears. Most of the battery properties are read only.
Figure 59 Battery Properties
If the Battery State field has a value other than Optimal , the Non-Optimal Reason field appears at the bottom of
the Battery Properties dialog. The Non-Optimal Reason field is a read-only field and states a reason for the non
optimal state of the battery.
2. Select a battery learn mode from the Learn Mode drop-down list.
The values in the drop-down list differ based on whether the battery supports transparent learn cycles.
—
If the battery supports transparent learn, the following values appear in the Learn Mode drop-down list:

Transparent – The firmware tracks the time since the last learning cycle and performs a learn cycle when
it is due.

Disabled – The firmware does not monitor or initiate a learning cycle. You can schedule learning cycles
manually.

Unknown – The firmware warns about a pending learning cycle. You can start a learning cycle manually.
After the learning cycle completes, the firmware resets the counter and warns you when the next
learning cycle time is reached.
—
If the battery does not support transparent learn, the following values appear in the Learn Mode drop-down
list:

Automatic – The firmware tracks the time since the last learning cycle and performs a learn cycle when
due. Write caching need not be disabled.

Disabled – The firmware does not monitor or initiate a learning cycle. You can schedule learning cycles
manually.

Disabled (Warning Only) – The firmware never initiates a battery learn cycle but notifies you through
events when a learn cycle is needed.