Current Hardware Health
The current status of your storage array's health is shown on the Current Hardware Health widget. The status for most items will read OK, Warning, or Critical, depending upon the set threshold values and the returned values. The icon colors for each item will be green, yellow, or red, respectively. Gray icons indicate a status of Unknown, which suggests a polling failure.
You can click on the gray triangle icons to expand and collapse the list of sensors that are being monitored.
When collapsed, the top level view shows the worst status of a sensor in that sensor group.