IBM 8654 - Eserver xSeries 330, Hardware Maintenance Manual

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Chapter 5. Installing options
71
Working with cables
The server has two different cabling schemes, the Advanced System Management bus
(ASM) and the Cable Chaining Technology (C2T). The following sections discuss
each of these options. While reading about these options, keep in mind that they are
independent of each other.
Note:
Refer to the following illustration to locate the connectors on the back of your
server.
The ASM connectors on the back of the server are referred to in this book as RS-485
(A) and RS-485 (B).
Note: The illustrations in this document might differ slightly from your hardware.
Cabling the RS-485 ports
You can use the RS-485 connectors to create an Advanced System Management bus
between several xSeries 330 servers.
Before you begin, review the following:
Important: The Advanced System Management bus is designed to support up to 12
units or servers. However, when using the Advanced System Management PCI
adapter, the bus uses the PCI adapter as another unit. In this case, you can connect a
maximum of 11 units or servers together.
• You can hot-swap the cables in the Advanced System Management bus.
• You can connect up to 12 units together if you are using serial (management) port
A as your Advanced System Management port.
• When connecting an xSeries 330 server to another server type you must install an
Advanced System Management adapter into PCI slot 1 or use the serial port as
your Advanced System Management port.
• When the Advanced System Management PCI adapter is added to the xSeries
330, you can connect up to 11 additional servers together.
• Use standard Ethernet cables with RJ-14 connectors.
Ethernet 1
Ethernet 2
PCI slot 1
PCI slot 2
RS-485 (Advanced
System Management
Interconnect) A
RS-485 (Advanced
System Management
Interconnect) B
USB 1
USB 2
C2T in
C2T out
Serial port