Intel RAID Basic Troubleshooting Guide

Intel® RAID Basic Troubleshooting Guide Troubleshooting
Revision 2.0
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Table 3. BBU Related Events and Messages
Message Description
WARNING:BBU disabled; changing
WB virtual disks to WT
The BBU is not connected or is not fully charged. You can still use the Bad
BBU mode under RAID Web Console 2 to enable Write Back mode on Virtual
disks. Unexpected power failure may cause data loss. Wait until the BBU is
fully charged before rebooting the system. If the WB mode was enabled before
the charge, then after the BBU is fully charged it will be automatically re-
enabled.
WARNING: Battery requires
reconditioning; please initiate a
LEARN cycle
Use RAID Web Console 2 or RAID BIOS Console to initiate a Battery Backup
Unit Re-Learn cycle.
FATAL: Controller cache discarded
due to memory/battery problems
The issue occurs when Write Back mode is enabled but the BBU is not fully
charged, or if the system lost power for more than 72 hours. Check the BBU
status to see if the BBU should be charged or replaced.