Hard disk drive activity LED (front panel): When this LED is flashing, it indicates
that the drive is in use. This function is reserved for simple-swap models. For
existing models, please see the hot-swap hard disk drive activity and status LEDs
(green and amber) that pass from the backplane as the indicators for any activity or
warning.
Hard disk drive status LED (amber): This amber LED is used on hot-swap
SAS/SATA hard disk drives. Each hot-swap hard disk drive has a status LED. When
this LED is lit, it indicates that the drive has failed. When this LED is flashing slowly
(one flash per second), it indicates that the drive is being rebuilt as part of a RAID
configuration. When the LED is flashing rapidly (three flashes per second), it
indicates that the controller is identifying the drive.
Operator information panel: This panel contains the power control button and
light-emitting diodes (LEDs).
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 green 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.
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 245 for information on logging on to the IMM Web
interface.
Hard disk drive activity LED (green): This green LED is used on hot-swap
SAS/SATA hard disk drives. Each hot-swap hard disk drive has an activity LED.
When this LED is flashing, it indicates that the drive is in use.
Locator LED: Use this blue LED to visually locate the server among other servers.
You can use IBM Systems Director to light this LED remotely. This LED is controlled
by the IMM.
System-error LED: When this amber LED is lit, it indicates that a system error has
occurred. This LED is controlled by the IMM.
Optional DVD-eject button: Press this button to release a CD or DVD from the
optional DVD drive.
Optional DVD drive activity LED: When this LED is lit, it indicates that the
optional DVD drive is in use.
Chapter 2. Introduction 11
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