Check manual page of hp_msa_fan
HP MSA 2040: Fan Speed and Status
This check monitors the fan speed and status a HP MSA 2040 storage system.
To make it work you have to configure the hp_msa datasource program via WATO.
Furthermore it reports the health status and reason if it is not "OK".
If the status of the fan is not "Up" or the health status is not "OK"
then the status of the service changes to WARN or CRIT.
The fan identifier.
One service per fan is created.