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Updating device records and reconfiguring the server
When you start your server for the first time after you add or remove an internal
option or an external SCSI device, you might see a message telling you that the
configuration has changed.
Some options have device drivers that you need to install. Refer to the
documentation that comes with your option for information about installing any
required device drivers.
If you have more than one microprocessor installed, you might want to upgrade
your operating system. Refer to ServerGuide topic. If you have installed or
removed hard disk drives and your server has a RAID adapter installed, refer to the
documentation provided with your RAID adapter for information about reconfiguring
your disk arrays.
Run the Configuration/Setup Utility program to save the new configuration
information. See Chapter 3, "Configuring your server."
Connecting external options
Connecting external SCSI devices
You can attach a SCSI storage expansion enclosure to your server.
Cabling requirements
The SCSI controller in your 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 and supports 14 unique SCSI IDs. 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:
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. See "SCSI IDs" on page 69 and refer to the instructions that come with the
SCSI devices for more information about setting a SCSI ID.
90
IBM xSeries User's Reference
Before you begin:
Read "Electrical safety" on page 42 and "Handling static-sensitive devices"
on page 44.
Read the documentation that comes with your options.
X3.131-1986 (SCSI)
X3.131-1994 (SCSI-2)
X3T10/1071D
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Troubleshooting
