If

no

bootable operating system image

is

found on

any of

the

storage

devices

in the system firmware boot list,

then

the server

attempts

to

boot again. With

attempt,

you

have

the opportunity

to start the System Management

Services

(SMS)

as

described

in

Chapter 3, “Using

System

Management

Services.”

 

 

Stopping the

Server

 

 

 

 

 

 

 

 

 

 

 

Attention

:

When

you

use

the

shutdown

procedure

for

your

server,

enter the corre

shutdown

command

for

your operating system

before you stop

the

server. Failure t

do so may result in the loss of data. If you need information

on the shutdown

procedure

for

your

operating system,

see

the

operating

system

documentation.

1. Before stopping the programs and operating system, notify your system

administrator

and

users that the server is

going

to

be

shut

down.

2. After

you

shut

down

the

operating system,

turn

off

the

server.

3. Set the power switches of the attached devices to Off.

Using

the Power

Switch

and

Indicator

 

 

The

power

switch

and

indicators

on the front

of your server allow you to control

power to

the

server,

observe

server power

status, and observe disk activity.

These features also have other built-in capabilities to assist you in diagnosing problems and observing server status:

ŸWhen the server is turned on by pressing the power switch, the power LED lig steadily.

Ÿ The disk drive LED lights whenever the hard disk drives within the server are being used.

ŸIf AIX is installed and running, a memory dump of system information can be requested.

– To enable this function,sysdumpdevthe -Kcommand must be executed before an error condition exists.

To request the memory dump, press the reset button on the operator panel. Requesting a memory dump directs AIX to save system information to a predefined file before turning off the system. This feature can be used

assist in recovery from system problems.

– When a memory dump

has been requested,

the power

LED

blinks quickly

 

(about 10

flashes

per second) to indicate that the

dump

has

been

starte

This blinking

ceases

after about a minute

whether

or

not

the

dump

is

Chapter 2. Using the 2Server-5

Page 37
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IBM B50 manual Indicator, Using