
with
these
switch
modules.
In
this
example,
you
could
then
install
two
Ethernet
switch
modules,
two
pass-thru
modules,
or
one
Ethernet
switch
module
and
one
pass-thru
module.
Because
pass-thru
modules
are
compatible
with
a
variety
of
I/O
expansion
cards,
installing
two
pass-thru
modules
would
allow
use
of
several
different
types
of
compatible
I/O
expansion
cards
within
the
same
BladeCenter
unit.
Important:
v
Installation
of
an
I/O
expansion
card
requires
removal
of
the
hard
disk
drive
that
is
installed
in
IDE
connector
2.
The
I/O
expansion
card
occupies
the
same
space
as
this
hard
disk
drive
and
replaces
it.
You
cannot
install
a
hard
disk
drive
in
IDE
connector
2
while
an
I/O
expansion
card
is
installed
in
the
blade
server.
v
The
Myrinet
Cluster
Expansion
Card
for
IBM
Eserver
BladeCenter
comes
with
a
cable
for
connection
to
the
system
board
of
a
compatible
device.
However,
the
cable
is
not
used
in
the
BladeCenter
JS20
Type
8842.
Therefore,
when
you
install
a
Myrinet
Cluster
Expansion
Card
for
IBM
Eserver
BladeCenter
into
a
BladeCenter
JS20
Type
8842,
do
not
connect
the
cable
from
the
I/O
expansion
card
to
the
system
board.
v
If
you
plan
to
install
a
Fibre
Channel
expansion
card
and
use
it
for
remote
startup
(boot)
operations,
call
the
IBM
Support
Center
for
additional
information.
In
the
U.S.
and
Canada,
call
1-800-IBM-SERV
(1-800-426-7378).
In
other
countries,
go
to
http://www.ibm.com/planetwide/
to
locate
your
support
telephone
numbers.
Attention:
If
the
hard
disk
drive
installed
in
IDE
connector
2
contains
any
information
that
you
want
to
keep,
back
it
up
to
another
storage
device.
80
BladeCenter
JS20
Type
8842:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide
Содержание BladeCenter JS20
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