Login the NAS system with support account
Get value of alarm_level in [cpu_idle] column in /opt/HS/alarm/hard_alarm.conf
Run the following command
#mpstat -P ALL
compare the value of %idle column with above one, if it’s bigger, the CPU status is ok, you can delete the alarm manually.
if the value of %idle column is less than that of step 2, it suggests the CPU is abnormal, and there are some processes which occupy too much CPU resource
gather all the processes with the following command
Check which process cause the problem