The current state of the fan:

*Degraded* - a fan is degraded;
*Failed* -  a fan has failed;
*Misplaced* - a fan is present, but not required in this bay, and the overall fan configuration is not compliant with the enclosure fan placement rules;
*Missing* - a fan is required, but is not present;
*OK* - a fan bay has no issues;
*Unknown* - the state of a fan is unknown.