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Disk array controller executes a learn cycle as the following steps.
1.
Battery starts discharging. The following logs are registered in MSM and application
log.
Controller ID:x Battery relearn started
Controller ID:x Battery is discharging
Controller ID:x BBU disabled; changing WB logical drives to WT
2.
Battery finishes discharging. The following log is registered in MSM and application
log.
Controller ID:x Battery relearn completed
3.
Battery starts charging. The following log is registered in MSM and application log. If
battery does not start charging after a while, please reboot the server.
Controller ID:x Battery started charging
4.
Battery finishes charging. The following log is registered in MSM and application log.
Controller ID:x Battery charge complete
Controller ID:x BBU enabled; changing WT logical drives to WB
The following message is displayed while learn cycle is running.
Your battery is either charging, bad or missing，and you have VDs
configured for write-back mode. Because the battery is not usable，
these VDs will actually run in write-through mode until the battery is
replaced.
The following VDs are affected：XX
Press any key to continue.
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