IBM x 340 Series, Hardware Maintenance Manual

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Installing options
61
Connecting external options
If you install a SCSI adapter, you can attach a SCSI storage expansion enclosure to
your server.
Cabling requirements
To select and order the correct cables for use with external devices, contact your IBM
reseller or IBM marketing representative.
For information about the maximum length of SCSI cable between the terminated
ends of the cable, see ANSI SCSI Standards:
• X3.131-1986 (SCSI)
• X3.131-1994 (SCSI-2)
• X3T10/1071D
Adhering to these standards ensures that your server operates properly.
Setting SCSI IDs for external devices
Each SCSI device that is connected to a SCSI controller must have a unique SCSI ID, so
that the SCSI controller can identify the devices and ensure that different devices do
not attempt to transfer data at the same time. SCSI devices that are connected to
different SCSI controllers can have duplicate SCSI IDs. The SCSI controller uses one of
the SCSI IDs; the default SCSI ID for the SCSI controller is 7. Refer to the instructions
that come with the SCSI devices for more information about setting a SCSI ID.
Installation procedure
To attach an external device:
1. Turn off the server and all attached devices.
2. Follow the instructions that come with the option to prepare it for installation and
to connect it to the server.
Input/Output ports
This section provides information about the input/output (I/O) ports on the rear of
your server. These ports include the following:
• One Parallel port
• One Video port
• One Keyboard port
• One Auxiliary-device (pointing device) port
• Two Ultra3 SCSI ports
• Two Serial ports
• Two Universal Serial Bus ports
• One Ethernet port
• Three Advanced System Management ports