IBM RS/6000 7025 manual System Power-On Methods, Start Mode

System Power-On Methods

Ÿ Power-on Switch - see “Starting the System Unit” on page 2-1.

ŸSP Menu power-on request

You

can request a power-on

via

the Service

Processor

menus

from

either

a

local

or

remote

terminal.

If

a

remote

terminal

is to

be

used,

the

modem

must

be

connected

to

serial port

1, and the operating system

set

up to enable a TTY

login

session on

that

port.

Refer

to

“Seamless Transfer

of

a

Modem

Session” on

page D-6

for

information

on

transferring

modem

sessions

from

Service Processor to

the

operating

system.

Ÿ Unattended start mode -Enable/Disablerefer Unattendedto

Start

Mode

on

page

4-12.

The Service Processor can be

enabled

to

recover from

the

loss

of

AC

power

(see Enable/Disable Unattended Power-On Mode in the

SYSTEM POWER

CONTROL MENU). When AC power is

restored,

the system

returns

to

the

then

current power

state at the

time AC loss occurred. For

example,

if

the

system

was powered-on when AC loss occurred, it reboots/restarts when power is

restored. If the system was

powered-off

when AC

loss

occurred, it

remains off

when

power is

restored.

ŸTimed power-on - refershutdownto the- command on servers using AIX.

Working in conjunction with AIX, the Service Processor in

your

server

can

operate

a

timer,

much like the wake-up

timer

on

your

clock radio. You

can

set

the

timer

so

that your server powers on at

a

certain

time

after

shutting

down.

The

timer

is

battery operated, so power interruptions

occurring while

the

server is

off

do

not

affect its accuracyshutdown. Refer-t

commandtotheof

AIX

for

details on setting the timer.

Because

of

the potential for AC power loss,

the

Timed

Power-On function of AIX

can

only

be

assured when Unattended Power-On

Mode is enabled. If a

Timed

Power-On

event

occurs during an AC power

loss,

and if Unattended Power-On

Mode

is

enabled,

the system starts when

AC

power

is

restored.

If Unattended Start Mode is disabled (the default), the system power state remains off when AC power is restored, regardless of the power state of the system when AC loss occurred.

ŸRing Indicate Power-On

Enabling ring indicate	power-on	disables remote call-in. If ring indicate power-on
is enabled, the server will		power on at a predetermined number of rings. If		the
server is already on, no action			is taken. In either case, the telephone call	is not
answered. The caller	receives	no	feedback that the server powered on.

4-26IBM RS/6000 7025 F50 Series User's Guide