To
avoid
loss
of
data,
shut
down
the
Linux
®
operating
system
before
you
turn
off
the
blade
server.
Shut
down
the
operating
system
by
entering
the
shutdown
-h
now
command
at
the
command
prompt
or
by
choosing
shutdown
if
you
are
using
a
graphical
user
interface
(GUI).
See
your
operating
system
documentation
for
additional
information
about
shutting
down
the
operating
system.
If
the
BladeCenter
unit
has
not
been
turned
off,
the
blade
server
can
be
turned
off
in
any
of
the
following
ways:
Using
the
power-control
button
Press
the
power-control
button
behind
the
control-panel
door
on
the
front
panel
of
the
blade
server.
This
starts
an
orderly
shutdown
of
the
operating
system
if
it
has
not
been
shut
down
already,
providing
your
operating
system
supports
this
feature,
before
turning
off
the
blade
server.
If
the
operating
system
stops
functioning,
pressing
and
holding
the
power-control
button
for
more
than
4
seconds
turns
off
the
blade
server.
Using
the
BladeCenter
Advanced
Management
Module
You
can
use
the
Advanced
Management
Module
Web
interface
to
turn
off
the
blade
server
remotely.
You
can
also
configure
the
Advanced
Management
Module
to
turn
off
the
blade
server
automatically
if
the
system
is
not
operating
correctly.
Note:
After
turning
off
the
blade
server,
wait
at
least
5
seconds
before
turning
it
on
again.
Blade
server
controls
and
LEDs
This
section
describes
the
controls
and
LEDs
on
the
front
panel
of
the
blade
server.
For
further
information
about
the
LEDs
and
how
they
can
be
used
to
assist
in
troubleshooting,
see
“Problems
indicated
by
the
front
panel
LEDs”
on
page
57.
Note:
The
control
panel
door
which
normally
covers
the
LEDs
and
power-control
button
is
omitted
for
reasons
of
clarity.
Activity
LED:
This
green
LED
lights
when
there
is
network
activity.
Blade-error
LED
Information
LED
Location
LED
Activity
LED
Power-on
LED
CD
Media-tray
select button
Power-control
button
NMI
reset-button
Figure
2.
Power-control
button
and
LEDs
Chapter
1.
Introduction
5
Summary of Contents for QS22 - BladeCenter - 0793
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