APPENDICES SECTION APPENDIX C

Overheat/Fan Fail (icon) – This LED is unlit unless the chassis is overheated. A flashing red LED indicates a fan failure. A steady red LED (on and not flashing) indicates an overheating condi- tion, which may be caused by cables obstructing the airflow in the system or the ambient room tem- perature being too warm.

NIC2 (icon) – A flashing green LED indicates net- work activity on LAN2. The LED is a steady green with link connectivity, and unlit if there with no link connectivity.

NIC1 (icon) – A flashing green LED indicates net- work activity on LAN1. The LED is a steady green with link connectivity, and unlit if there with no link connectivity.

HDD (icon) – In addition to displaying in the control panel, this icon also displays on the front panel on each hard drive carrier. Hard drive activity is indi- cated by a green LED on an “H” or “HL” server, and by an amber LED on an “SL” server. An unlit LED on a drive carrier may indicate a hard drive failure. (See Hard drive failure in the Troubleshoot- ing sub-section for information on detecting a hard drive failure and resolving this problem.)

Power (icon) – The LED is unlit when the server is turned off. A steady green LED indicates power is being supplied to the unit’s power supplies. (See also Rear of chassis.) (See Power supply failure in the Troubleshooting sub-section for information on detecting a power supply failure and resolving this problem.)

Power (button) – When the power button is pressed, the main power to the server is turned on. When the power button is pressed again, the main power to the server is removed but standby power is still supplied to the server.

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