APC iSCSI SATA II User Manual
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2.9.2 System Buzzer
The system buzzer features are described as follows:
1. The system buzzer alarms 1 second when system boots up successfully.
2. The system buzzer alarms continuously when there is error level event
happened. The alarm will be stopped after mute.
3. The alarm will be muted automatically when the error situation is resolved.
E.g., when RAID 5 is degraded and alarm sounds immediately, after user
changes/adds one physical disk for rebuilding, and when the rebuilding is
done, the alarm will be muted automatically.