Users Guide

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

Starting A Learn Cycle

Initiating The Battery Delay Learn Cycle

Topics:

• Battery Properties And Tasks

• Battery Tasks

• Battery — Available 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 26. 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. For more

information, see Starting A 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.

100 RAID Controller Batteries