Controls And Indicators - IBM eServer 342 xSeries Installation Manual

Controls and indicators

i c a t o r s C o n t r o l s a n d i n d The following illustration shows the controls and indicators on the front of your server.
Note: The illustrations in this document might differ slightly from your hardware.
System power light (green)
Power-control-button shield (if installed)
Power control button
Operator information panel
Reset button
Serial number
Hard disk drive activity light (green) Hard disk drive status light (amber)
System power light: When this green light is on, system power is present in the
server. When this light flashes, the server is in standby mode (the system power
supply is turned off and ac current is present). When this light is off, either a power
supply, ac power, or a light has failed.
Attention: If this light is off, it does not mean there is no electrical current present in
the server. The light might be burned out. To remove all electrical current from the
server, you must unplug the server power cords from the electrical outlets or from the
UPS.
Power-control button shield: You can install this circular disk over the power-
control button to prevent accidental manual power-off. This disk is provided with your
server.
Power-control button: Press this button to manually turn the server on or off.
Reset button: Press this button to reset the server and run the power-on self-test
(POST). You might need to use a pen or the end of a straightened paper clip to press
this button.
Operator information panel: The lights on this panel give status information for your
server. See "Operator information panel" on page 24 for more information.
Hard disk drive status light: Each of the hot-swap drives has a hard disk drive
status light. When this amber light is on continuously, the drive has failed.
If a ServeRAID adapter is installed and this light flashes slowly (one flash per
second), the drive is being rebuilt. When the light flashes rapidly (three flashes per
second), the controller is identifying the drive.
Hard disk drive activity drive light: Each of the hot-swap drives has a hard disk
drive activity light. When this green light is flashing, the controller is accessing the
drive.
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Chapter 3. Server power, controls, and indicators