IBM JS20 Hardware Maintenance Manual - Page 23

Blade, server, power, controls, indicators

Page 23 highlights

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 the 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 14 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. 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 and BladeCenter T 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 the 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. 2003 13

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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
the
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
14
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.
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
and
BladeCenter
T
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
the
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.
2003
13