The color scheme of the System Faults cells reflect the number of current unacknowledged alerts.
Green — If all cells are green, there are no unacknowledged alerts for that component.
Blue — If cells for a component are blue, there are one or more unacknowledged Informational alerts for that component.
Yellow — If cells for a component are yellow, there are one or more unacknowledged Warning alerts for that component.
Orange — If cells for a component are orange, there are one or more unacknowledged Error alerts for that component.
Red — If cells for a component are red, there are one or more Critical alerts that are unacknowledged for that component.
Note
Acknowledging a fault means that you are aware of the problem and plan to take appropriate action.
Here is another scenario: You log on to Manager. The System Faults status in the Dashboard page reads Critical (red). Click the fault link that opens the details page for the fault. After examining the fault, you manually Acknowledge it. After 30 seconds, the Dashboard page refreshes and the System Faults displays Up/Active. The problem may still exist, but since you acknowledged the fault, Manager determines all other system issues are good, and you are taking the steps to fix the fault issue. Thus, you are not constantly reminded of the fault.
Some faults clear on their own, and disappear from view. For example, if someone removes one of the power supplies from an NS7100 Sensor, a Critical (red) fault appears, describing the situation. When the power supply is reinserted, another fault appears describing the new situation, along with a third indicating that there is no power. When power is detected on the supply, the power supply is considered operational again, and Manager clears all three fault messages.