Scalability LED: This white LED is lit when the server is connected to another
server in a multi-node configuration. This LED is lit and remains on after POST on
the primary and secondary server.
Hard disk drive activity LED: When this LED is flashing, it indicates that the
drive is in use.
Hard disk drive status LED: On some server models, each hot-swap hard disk
drive has a status LED. When this LED is lit, it indicates that the drive has failed.
If an optional IBM ServeRAID controller is installed in the server, when this LED is
flashing slowly (one flash per second), it indicates that the drive is being rebuilt.
When the LED is flashing rapidly (three flashes per second), it indicates that the
controller is identifying the drive.
Operator information panel
The following illustration shows the controls and LEDs on the operator
information panel.
Information LED
System-error LED
1
2
Ethernet icon LED
Power-control button/power-on LED
Ethernet port activity LEDs
Locator button/locator LED
Power-control button cover
The following controls and LEDs are on the operator information panel:
v Power-control button and power-on LED: Press this button to turn the server
on and off manually or to wake the server from a reduced-power state. The
states of the power-on LED are as follows:
Off: AC power is not present, or the power supply or the LED itself has
failed.
Flashing rapidly (4 times per second): The server is turned off and is not
ready to be turned on. The power-control button is disabled. In a fully
configured server, it could take up to 8 minutes after the server is connected
to ac power, before the power-control button becomes active.
Flashing slowly (once per second): The server is turned off and is ready to
be turned on. You can press the power-control button to turn on the server.
Lit: The server is turned on.
Fading on and off: The server is in a reduced-power state. To wake the
server, press the power-control button or use the IMM web interface. For
information about logging on to the IMM web interface, see “Logging on to
the IMM web interface” on page 106.
v Ethernet icon LED: This LED lights the Ethernet icon.
v Information LED: When this LED is lit, it indicates that a noncritical event has
occurred. An LED on the light path diagnostics panel is also lit to help isolate
the error.
v System-error LED: When this LED is lit, it indicates that a system error has
occurred. An LED on the light path diagnostics panel is also lit to help isolate
the error.
Chapter 1. The System x3850 X5 and x3950 X5 server 13
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