IBM BladeCenter JS20 Installation And User Manual - Chapter

Chapter

2.

Blade

server

power,

controls,

and

indicators

This

chapter

describes

the

power

features,

how

to

turn

on

and

turn

off

the

blade

server,

and

what

the

controls

and

indicators

mean.

Turning

on

the

blade

server

Important:

To

generate

faster

blade-server

startups

from

the

network,

connect

the

dynamic

host

configuration

protocol

(DHCP)

server

to

the

Ethernet

switch

module

in

I/O

bay

2

in

the

BladeCenter

unit.

The

system

firmware

code

in

the

blade

server

detects

this

Ethernet

controller

first.

The

Ethernet

controller

in

each

blade

server

is

then

associated

with

the

switch

module

in

I/O

bay

2.

Notes:

v

After

you

connect

the

power

cords

of

your

BladeCenter

unit

to

the

electrical

outlets,

wait

until

the

power-on

LED

on

the

blade

server

flashes

slowly

before

pressing

the

blade

server

power-control

button.

Before

the

LED

flashes,

the

service

processor

in

the

BladeCenter

management

module

is

initializing,

and

the

power-control

button

on

the

blade

server

will

not

respond.

v

While

the

blade

server

is

powering

up,

the

power-on

LED

on

the

front

of

the

server

is

lit.

See

“Blade

server

controls

and

LEDs”

on

page

15

for

the

power-on

LED

states.

v

After

an

orderly

shutdown

of

the

operating

system

occurs,

the

Wake

on

LAN

feature

is

permanently

enabled

in

the

blade

server

system

firmware

code.

Therefore,

Enabled

is

the

default

setting.

The

Wake

on

LAN

setting

for

each

blade

server

is

stored

in

the

management-module

nonvolatile

random-access

memory

(NVRAM).

To

disable

the

Wake

on

LAN

feature

for

one

or

more

blade

servers,

use

the

BladeCenter

management-module

Web

interface.

For

more

information

about

the

BladeCenter

management-module

Web

interface,

see

the

BladeCenter

Management

Module

User’s

Guide

on

the

IBM

BladeCenter

Documentation

CD.

v

Throughout

this

document,

the

management-module

Web-based

user

interface

is

also

known

as

the

BladeCenter

management-module

Web

interface.

After

you

connect

the

BladeCenter

unit

to

power,

the

blade

server

can

start

in

any

of

the

following

ways:

v

You

can

press

the

power-control

button

on

the

front

of

the

blade

server

(behind

the

control

panel

door)

to

start

the

server.

v

If

a

power

failure

occurs,

the

BladeCenter

unit

and

then

the

blade

server

can

start

automatically

when

power

is

restored

(if

the

blade

server

is

configured

through

the

BladeCenter

management

module

to

do

so).

v

You

can

turn

on

the

blade

server

remotely

by

means

of

the

service

processor

in

the

BladeCenter

management

module.

v

If

your

operating

system

supports

the

Wake

on

LAN

feature

and

it

has

not

been

disabled

through

the

BladeCenter

management-module

Web

interface,

the

blade

server

power-on

LED

is

flashing

slowly,

and

the

Wake

on

LAN

feature

can

turn

on

the

blade

server.

©

Copyright

IBM

Corp.

2004

13