Users Guide

Table Of Contents
RAID Controller Batteries
Some RAID controllers have batteries. If the controller has a battery, Storage Management displays the battery under the
controller object in the tree view.
If there is a power outage, the controller battery preserves data that is in the volatile cache memory (SRAM) but not yet written
to disk. The battery is designed to provide a minimum backup of 24 hours.
When a RAID controller is first installed in a server, the battery may need charging.
For information on alert messages, see the Server Administrator Messages Reference Guide.
Related concepts
Battery Properties And Tasks on page 104
Topics:
Battery Properties And Tasks
Battery Tasks
To Locate Delay Learn Cycle In Storage Management
Battery Properties And Tasks
To view information about the battery and execute battery tasks, use the battery properties and tasks page.
Table 31. Battery Properties
Property Definition
Status These icons represent the severity or health of the storage component.
Normal/OK
Warning/Non-critical
Critical/Failure/Error
For more information, see Storage Component Severity.
Name Displays the name of the battery.
State Displays the status of the battery. Possible values are:
Charging The battery is undergoing the recharge phase of the battery learn cycle.
Missing The battery is missing on the controller.
Failed The battery has failed and has to be replaced.
Learn Mode Displays the learn mode of the battery. Possible values are:
Auto Storage Management performs an automatic learn cycle based on the set time.
Warn The learn cycle is past the default 90 days.
When the battery is in Warn mode, the state of the controller is displayed as degraded.
NOTE: Warn is available only on SAS controllers with firmware version 6.1 and later.
Next Learn Time Displays the number of days and hours left before the controller firmware initiates the next
learn cycle.
Maximum Learn Delay Displays the maximum number of days and hours that you can delay the battery learn cycle.
The controller firmware automatically initiates the battery learn cycle. You cannot stop or
pause the learn cycle, but you can delay it.
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104 RAID Controller Batteries