IBM XSERIES 255 TYPE 8685, Руководство по техническому обслуживанию и ремонту

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SCSI cabling requirements
For information about the maximum length of SCSI cable, see the American
National Standards Institute (ANSI) SCSI standards on the ANSI Web site at
http://www.ansi.org/ on the World Wide Web. Adhering to these standards will help
to ensure that your server operates properly.
When you attach a SCSI device to the external SCSI connector, you must set a
unique ID for the device. See the information that is provided with the device for
instructions to set its SCSI ID. See “Setting SCSI IDs” on page 111 for additional
information about SCSI IDs.
Input/output connectors
This section provides information about the input/output (I/O) connectors on the rear
of your server. These connectors include the following:
v
One video port
v
One keyboard port
v
One auxiliary-device (pointing device) port
v
One serial port
v Four Universal Serial Bus (USB) ports
v One Ethernet port
v Two ISMP (RS-485) ports
The server system board contains two Ultra160 SCSI connectors. See
“System-board internal cable connectors” on page 43 for the SCSI connector
locations.
The following illustration shows the I/O ports on the rear of your server.
ISMP A
ISMP B
USB
3 and 4 USB
1 and 2
Video
Serial
Keyboard
Mouse Ethernet
External SCSI
cable knockout
Line cord 2
Line cord 1
Notes:
1. The ISMP ports (ISMP A and B) are dedicated for use by the
system-management subsystem. The ISMP ports are used for the RS-485
interconnect network communications. These ports become inactive if you install
an optional IBM Remote Supervisor Adapter in this server. If you install an
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xSeries 255 Type 8685: Hardware Maintenance Manual and Troubleshooting Guide