to
avoid
potential
thermal
problems.
Blower error
LEDs
Acoustic
attenuation
option
For
server
environments
where
noise
reduction
is
essential,
you
might
choose
to
install
the
BladeCenter
Acoustic
Attenuation
option
(acoustic
option).
The
acoustic
option
is
installed
on
the
back
of
the
BladeCenter
unit,
directly
covering
the
blower
modules
and
partially
covering
the
other
modules.
The
system
LED
panel
is
replicated
on
the
acoustic
module
for
visibility.
Switch
modules
The
BladeCenter
unit
supports
a
minimum
of
one
hot-swap
Ethernet
switch
module,
in
switch-module
bay
2.
This
switch
module
provides
an
internal
connection
to
Ethernet
Link
1
in
all
the
blade
servers
in
the
BladeCenter
unit.
To
provide
an
internal
connection
for
Ethernet
Link
2
in
each
blade
server,
install
an
Ethernet
switch
module
in
switch-module
bay
2.
Note:
Enumeration
of
the
Ethernet
controllers
is
operating-system
dependent.
for
example,
the
Ethernet
controller
located
nearer
the
top
of
the
blade
server
whose
communications
are
routed
through
Ethernet
switch
module
1,
is
designated
as
the
first
connection
(or
Local
Area
Connection)
by
Microsoft
Windows
2000,
but
is
designated
as
the
second
connection
(or
eth1)
by
Red
Hat
Linux
Version
7.3.
The
Ethernet
controller
located
nearer
the
bottom
of
the
blade
server,
whose
communications
are
routed
through
Ethernet
Switch
module
2,
is
designated
as
the
second
connection
(or
Local
Area
Connection
2)
by
Microsoft
Windows
2000,
but
is
designated
as
the
first
connection
(or
eth0)
by
Red
Hat
Linux
Version
7.3.
If
you
install
an
I/O
expansion
option
on
any
blade
server,
you
must
install
a
hot-swap
switch
module
of
the
same
network
interface
in
switch-module
bay
3
to
obtain
network
connection
3
for
the
option;
to
provide
network
connection
4
for
the
option,
install
a
switch
module
of
that
network
interface
in
switch-module
bay
4.
The
switch
modules
in
bays
3
and
4
provide
network
connections
to
all
the
I/O
expansion
options
on
the
blade
servers.
Important:
The
switch
modules
in
switch-module
bays
3
and
4
and
all
blade
server
I/O
expansion
options
in
the
BladeCenter
unit
must
use
the
same
network
interface.
For
example,
if
you
install
a
Fibre
Channel
I/O
expansion
option
on
a
blade
server,
16
BladeCenter
Type
8677:
Planning
and
Installation
Guide
Summary of Contents for 8677 - BladeCenter Rack-mountable - Power Supply
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