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. This will
last approximately 20 to 40 seconds.
Note: Approximately 20 seconds after the server is connected to ac
power, 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.
See “Logging on to the Web interface” on page 114 for information on
logging on to the IMM Web interface.
Hard disk drive activity LED
When this LED is flashing, it indicates that a hard disk drive is in use.
System-error LED
When this amber LED is lit, it indicates that a system error has occurred.
An LED on the system board might also be lit to help isolate the error.
USB connectors
Connect USB devices to these connectors.
DVD-eject button
Press this button to release a CD or DVD from the DVD drive.
DVD drive activity LED
When this LED is lit, it indicates that the DVD drive is in use.
Hot-swap hard disk drive activity LED (some models)
On some server models, each hot-swap drive has a hard disk drive activity
LED. When this green LED is flashing, it indicates that the drive is in use.
When the drive is removed, this LED also is visible on the SAS/SATA
backplane, next to the drive connector. The backplane is the printed circuit
board behind drive bays 4 through 7 on 3.5-inch hard disk drive models and
bays 4 through 11 on 2.5-inch hard disk drive models.
Hot-swap hard disk drive status LED (some models)
On some server models, each hot-swap hard disk drive has an amber
status LED. If this amber status LED for a drive is lit, it indicates that the
associated hard disk drive has failed.
If an optional ServeRAID adapter is installed in the server and the LED
flashes slowly (one flash per second), the drive is being rebuilt. If the LED
flashes rapidly (three flashes per second), the adapter is identifying the
drive.
Note: For proper cooling, do not install any card in the slot next in
sequence to a ServeRAID adapter with battery backup module (for
Chapter 1. The System x3400 M3 server 15
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