Chapter
2.
Blade
server
power,
controls,
and
indicators
This
chapter
describes
the
power
features,
how
to
turn
on
and
turn
off
the
blade
server,
what
the
controls
and
indicators
mean,
and
where
the
system
board
jumpers
and
switches
are
located
and
how
to
use
them.
Turning
on
the
blade
server
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
“The
control
panel
buttons
and
LEDs”
on
page
13
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
and
BladeCenter
T
Management
Module
User’s
Guide
.
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
Wake
on
LAN
feature
can
turn
on
the
blade
server.
©
Copyright
IBM
Corp.
2006
11
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