IBM PureFlex System and IBM Flex System Products and Technology

194 IBM PureFlex System and IBM Flex System Products and Technology

devices are listed in the boot menu. This configuration allows you to boot from either device,

or set one as a backup in case the first gets corrupted.

The supported USB memory keys are listed in Table 5-41.

Table 5-41 Virtualization options

5.3.12 Systems management

The following section describes some of the systems management features that are available

with the x220.

Front panel LEDs and controls

The front of the x220 includes several LEDs and controls that assist in systems management.

They include a hard disk drive activity LED, status LEDs, and power, identify, check log, fault,

and light path diagnostic LEDs. Figure 5-32 shows the location of the LEDs and controls on

the front of the x220.

Figure 5-32 The front of the x220 with the front panel LEDs and controls shown

Table 5-42 describes the front panel LEDs.

Table 5-42 x220 front panel LED information

Part number Description Maximum supported

41Y8300 IBM USB Memory Key for VMware ESXi 5.0 2

41Y8298 IBM Blank USB Memory Key for VMware ESXi Downloads 2

USB port

Console Breakout

Cable port

Power button / LED

Hard disk drive

activity LED

Hard disk drive

status LED Identify LED

Check log LED

Fault LED

NMI control

LED Color Description

Power Green This LED lights solid when system is powered up. When the compute node is initially

plugged into a chassis, this LED is off. If the power-on button is pressed, the IMM flashes

this LED until it determines that the compute node is able to power up. If the compute node

is able to power up, the IMM powers the compute node on and turns on this LED solid. If

the compute node is not able to power up, the IMM turns off this LED and turns on the

information LED. When this button is pressed with the server out of the chassis, the light

path LEDs are lit.

195

Table 5-43 describes the x220 front panel controls.

Table 5-43 x220 front panel control information

Power LED

The status of the power LED of the x220 shows the power status of the compute node. It also

indicates the discovery status of the node by the Chassis Management Module. The power

LED states are listed in Table 5-44.

Table 5-44 The power LED states of the x240 compute node

Location Blue A user can use this LED to locate the compute node in the chassis by requesting it to flash

from the chassis management module console. The IMM flashes this LED when instructed

to by the Chassis Management Module. This LED functions only when the server is

powered on.

Check error log Yellow The IMM turns on this LED when a condition occurs that prompts the user to check the

system error log in the Chassis Management Module.

Fault Yellow This LED lights solid when a fault is detected somewhere on the compute node. If this

indicator is on, the general fault indicator on the chassis front panel should also be on.

Hard disk drive

activity LED

Green Each hot-swap hard disk drive has an activity LED, and when this LED is flashing, it

indicates that the drive is in use.

Hard disk drive

status LED

Yellow 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.

LED Color Description

Control Characteristic Description

Power on / off

button

Recessed with Power

LED

If the server is off, pressing this button causes the server to power up and

start loading. When the server is on, pressing this button causes a graceful

shutdown of the individual server so it is safe to remove. This process

includes shutting down the operating system (if possible) and removing

power from the server. If an operating system is running, the button might

have to be held for approximately 4 seconds to initiate the shutdown. This

button must be protected from accidental activation. Group it with the Power

LED.

NMI Recessed. It can be

accessed only by using

a small pointed object.

Causes an NMI for debugging purposes.

Power LED state Status of compute node

Off No power to compute node

On; fast flash mode Compute node has power

Chassis Management Module is in discovery mode (handshake)

On; slow flash mode Compute node has power

Power in stand-by mode

On; solid Compute node has power

Compute node is operational

Exception: The power button does not operate when the power LED is in fast flash mode.