Avago Technologies Cache Protection for RAID Controller Cards - Manual (Page 115)

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
Monitoring and Managing BBU Units with the MegaRAID Configuration Utilities
3.1.1.3 Setting the Auto Learn Mode
You can start battery learning cycles manually or automatically. The Auto Learn modes include the following modes:
 BBU Auto Learn: Firmware tracks the time since the last learning cycle and performs a learn cycle when due.
 BBU Auto Learn Disabled: Firmware does not monitor or initiate a learning cycle. You can schedule learning
cycles manually.
 BBU Auto Learn Warn: Firmware warns about a pending learning cycle. You can initiate a learning cycle
manually. After the learning cycle is complete, firmware resets the counter and warns you when the next learning
cycle time is reached.
Perform the following steps to choose an auto learn mode:
1. Open the drop-down menu in the Auto Learn Mode field.
2. Select an auto learn mode.
3. Click Go to set the auto learn mode.
NOTE When you replace the iBBU unit, the charge cycle counter is
reset automatically.
3.1.2 Monitoring and Managing BBU Units with the Ctrl-R Utility
The Ctrl-R Utility is a BIOS configuration utility that lets you create and manage RAID configurations on Avago SAS
controllers. You can configure the drive groups and drives on the system before the operating system has been
installed.
If your SAS controller has a BBU unit, 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. You can view the battery type, battery state, temperature, capacity
information, estimated backup time, and learn mode information. Most of the battery properties are read only.
Figure 82 Battery Properties Dialog