IBM 8676 Hardware Maintenance Manual - Page 70

Cabling, chain

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The following sections describe how to cable a C2T chain and an ASM interconnect network. Cabling a C2T chain Use C2T interconnect cables to connect the servers into a chain. The following illustration shows a C2T interconnect cable. Use a C2T breakout cable (available in the C2T cable option kit) to connect the first server in the chain to the monitor, keyboard, and pointing device. The following illustration shows a C2T breakout cable. Before cabling the C2T chain, review the following information: v You can connect a maximum of 42 servers in a C2T chain. v When connecting servers that are more than 3 U apart or on different racks, you must use a 2-m (6.5-ft) C2T interconnect cable, which comes in the C2T cable option kit. You can use only one 2-m (6.5-ft) cable in a chain. v C2T interconnect cables are hot-swappable. v Servers are numbered by their positions in the chain (1 through n). If one server is removed from the chain, the remaining servers are renumbered. For example, if the 12th server is removed from a chain of 15 servers, servers 13 through 15 are renumbered to 12 through 14. v C2T numbering is independent of other server references. For example, changing the position of a server in the C2T chain does not affect its IP address. v C2T chaining supports a maximum video mode of 1024 x 768. Complete the following steps to cable a C2T chain: 1. Turn off the servers. 2. Obtain a sufficient number of C2T interconnect cables. The server comes with one C2T interconnect cable that can span approximately 3 U. A 2-m (6.5-ft) C2T interconnect cable and a C2T breakout cable come in the C2T cable option kit. The following illustration shows a C2T chain of four servers. 60 xSeries 335 Type 8676, Type 8830: Hardware Maintenance Manual and Troubleshooting Guide

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The
following
sections
describe
how
to
cable
a
C2T
chain
and
an
ASM
interconnect
network.
Cabling
a
C2T
chain
Use
C2T
interconnect
cables
to
connect
the
servers
into
a
chain.
The
following
illustration
shows
a
C2T
interconnect
cable.
Use
a
C2T
breakout
cable
(available
in
the
C2T
cable
option
kit)
to
connect
the
first
server
in
the
chain
to
the
monitor,
keyboard,
and
pointing
device.
The
following
illustration
shows
a
C2T
breakout
cable.
Before
cabling
the
C2T
chain,
review
the
following
information:
v
You
can
connect
a
maximum
of
42
servers
in
a
C2T
chain.
v
When
connecting
servers
that
are
more
than
3
U
apart
or
on
different
racks,
you
must
use
a
2-m
(6.5-ft)
C2T
interconnect
cable,
which
comes
in
the
C2T
cable
option
kit.
You
can
use
only
one
2-m
(6.5-ft)
cable
in
a
chain.
v
C2T
interconnect
cables
are
hot-swappable.
v
Servers
are
numbered
by
their
positions
in
the
chain
(1
through
n
).
If
one
server
is
removed
from
the
chain,
the
remaining
servers
are
renumbered.
For
example,
if
the
12th
server
is
removed
from
a
chain
of
15
servers,
servers
13
through
15
are
renumbered
to
12
through
14.
v
C2T
numbering
is
independent
of
other
server
references.
For
example,
changing
the
position
of
a
server
in
the
C2T
chain
does
not
affect
its
IP
address.
v
C2T
chaining
supports
a
maximum
video
mode
of
1024
x
768.
Complete
the
following
steps
to
cable
a
C2T
chain:
1.
Turn
off
the
servers.
2.
Obtain
a
sufficient
number
of
C2T
interconnect
cables.
The
server
comes
with
one
C2T
interconnect
cable
that
can
span
approximately
3
U.
A
2-m
(6.5-ft)
C2T
interconnect
cable
and
a
C2T
breakout
cable
come
in
the
C2T
cable
option
kit.
The
following
illustration
shows
a
C2T
chain
of
four
servers.
60
xSeries
335
Type
8676,
Type
8830:
Hardware
Maintenance
Manual
and
Troubleshooting
Guide