Appendix C. Connecting Scsi Devices To The Adapter - IBM 5710 Installation And Using Manual

Appendix C. Connecting SCSI Devices to the Adapter

This appendix describes how to lay out a SCSI chain, set SCSI addresses, and terminate SCSI devices
and the adapter.
SCSI devices are attached to a SCSI adapter in a chain. Devices in a chain can be internal (inside your
system unit) or external (connected outside your system unit). If you are connecting more than one SCSI
device, it is important that you plan the layout of your SCSI chain.
Note: A terminator is required at each end of the SCSI chain. Each channel on the adapter has a
terminator that is automatically enabled when a cable is attached to either the external or internal
connector.
The PCI-X Dual Channel Ultra320 SCSI Adapter does not support simultaneously attaching to the
internal and external connectors on a channel.
To share a subsystem with a second adapter, see the following figure. The subsystem redirects each
adapter to a common internal SCSI bus.
External Low-Voltage Differential Connection
The interconnection cable, which has VHDCI connectors, is provided with the external subsystem.
A Adapter
C0 Channel 0 connector
C1 Channel 1 connector
S Low voltage differential subsystem
T Terminator
T0 Channel 0 terminator
T1 Channel 1 terminator
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