SUPERSERVER
3-3 Control Panel LEDs
In addition to the LEDs built into the power and UID buttons, each of the four control panels located on the front of the
Overheat/Fan Fail
When this LED is solid on it indicates an overheat condition. When it flashes quickly (~ once every second), it indicates a fan failure. When it flashes slowly (~ once every four seconds) on the node A control panel, it indicates a power supply failure. An overheat condition may be caused by cables obstructing the airflow in the system or the ambient room temperature being too warm. Check the routing of the cables and make sure all fans are present and operating normally. You should also check to make sure that the chassis cover is properly installed. Finally, verify that the heatsinks are installed properly (see Chapter 5). This LED will remain flashing or on as long as the indicated condition exists.
NIC
Indicates network activity on any of the LAN ports when flashing
3-4 SATA Drive Carrier LEDs
Each SATA drive carrier has two LEDs.
•Green: When illuminated, the green LED on the front of the SATA drive carrier indicates drive activity. A connection to the SATA backplane enables this LED to blink on and off when that particular drive is being accessed.
•Red: The red LED serves two functions:
•When solid on (not flashing), this LED indicates a hard drive failure.
•When this LED flashes on and off it indicates the HDD is rebuilding.