IBM 866251Y - Netfinity 5500 M20, Руководство по техническому обслуживанию аппаратной части

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External options
Note
Ÿ
Read “Safety information” on page 340.
Ÿ
Read the documentation that comes with the
options.
Connecting external SCSI devices:
You can attach a SCSI storage expansion enclosure to the
server.
Cabling requirements:
The ServeRAID controller in
the server has one channel that can be used to attach
external devices. This channel is connected to the SCSI
connector on the back of the server. To select and order
the correct cables for use with external devices, contact
your IBM reseller or IBM marketing representative.
Refer to “ServeRAID system board controller” on page 66
to determine the number of internal and external
connectors, channels, and SCSI devices that the controller
supports.
For information about the maximum length of SCSI cable
between the terminated ends of the cable, see ANSI SCSI
Standards:
Ÿ
X3.131-1986 (SCSI)
Ÿ
X3.131-1994 (SCSI-2)
Ÿ
X3T10/1071D
Adhering to these standards ensures that the 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. See “SCSI IDs” on page 215 and
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 and connectors:
The input/output (I/O) connectors are for attaching external
devices, such as printers, keyboards, and displays, to the
server. The I/O connectors on the server include:
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Netfinity Server HMM