The Alert Center is the tool that monitors your system to warn you about potential problems. You can set the Alert Center to automatically open to display any monitored objects that have exceeded their threshold and are therefore in a state of alarm or warning. You set up the thresholds using the Performance Monitor, which is invoked from the Control Center. The color of the icon indicates the severity of the warning. A red icon indicates an alarm. A yellow icon indicates a warning. The data returned for the performance variable is displayed. See the online help for instructions on how to analyze the data.