v
The
management
module
can
turn
off
the
blade
server.
–
If
the
system
is
not
operating
correctly,
the
management
module
will
automatically
turn
off
the
blade
server.
–
Through
the
management-module
Web
interface,
you
can
also
configure
the
management
module
to
turn
off
the
blade
server.
For
additional
information,
see
the
IBM
BladeCenter
Management
Module
User’s
Guide
.
Understanding
the
control
panel
and
LEDs
This
section
describes
the
controls
and
LEDs
on
the
blade
server.
Note:
v
The
control
panel
door
is
shown
in
the
closed
(normal)
position
in
the
following
illustration.
To
access
the
power-control
button,
you
must
open
the
control
panel
door.
v
The
following
illustration
shows
a
single-width
type
blade
server.
The
double-width
type
blade
server
has
the
same
control
panel.
KVM select button
Activity LED
Location LED
Information LED
Blade-error LED
Media-tray select
button
Power-control button
Power-on LED
KVM
select
button:
Press
this
button
to
associate
the
shared
BladeCenter
unit
keyboard,
video,
and
mouse
port
(KVM)
with
the
blade
server.
The
LED
on
this
button
flashes
while
the
request
is
being
processed,
and
then
is
lit
when
the
ownership
of
the
keyboard,
video,
and
mouse
has
been
transferred
to
the
blade
server.
It
can
take
approximately
20
seconds
to
switch
the
keyboard,
video,
and
mouse
control
to
the
blade
server.
Using
a
keyboard
that
is
directly
attached
to
the
management-module,
you
can
press
keyboard
keys
in
the
following
sequence
to
switch
KVM
control
between
blade
servers:
NumLock
NumLock
blade_server_number
Enter
Where
blade_server_number
is
the
two-digit
number
for
the
blade
bay
in
which
the
blade
server
is
installed.
A
blade
server
that
occupies
more
than
one
blade
bay
is
identified
by
the
lowest
bay
number
that
it
occupies.
14
BladeCenter
LS21
Type
7971
and
LS41
Type
7972:
Installation
and
User’s
Guide
Summary of Contents for LS21 - BladeCenter - 7971
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