Check manual page of dell_om_fans
dell OpenManage: Fans
The states of a fan is checked here. Also the name of the fan is added to the
output. The state will change to WARN if "Non critical upper" or "Non
critical lower" is reported by the appliance. The state will change to CRIT
if one of the following: "Critical upper", "Non recoverable upper", "Critical
lower", "Non recoverable lower", "Failed". For "Other" and "Unknown" the state
will be uNKNOWN.
Thresholds can be also defined by the common ruleset for fans.
The fan index is the item
One service for each fan is created