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Installing SCSI Terminators
Your SCSI devices communicate with each other and with the
controller along the SCSI bus. For each SCSI bus you use
(channel A and channel B), you must mark both “ends” of the
bus with SCSI terminators. The ends of the bus are the first
device on one end of the bus (such as your SCSI interface) and
the last device on the other end (such as a SCSI hard disk
drive).
You usually install a terminator on the printed circuit board of
a SCSI device. In your computer, each of the built-in SCSI
interfaces have a built-in terminator, so you do not have to
install any to terminate the interface end of the bus. However,
you must install a terminator on the SCSI device that you
assign as the last device on the other end of the bus. You must
also remove any terminators that are installed on any devices
installed between the interface and the device on the other end
of the bus. See your SCSI device documentation for instructions
on installing and removing the terminators on your devices.
If you connect a SCSI device with a built-in terminator that
you cannot remove, that device must be the last device on
Installing SCSI Devices
The two SCSI channels in your computer each support up to
seven differential-pair or single-ended SCSI devices for a total
of 14 devices. Your system includes a SCSI device cable for one
of the channels to which you can connect up to seven SCSI
devices (including the interface). Follow the instructions in
Chapter 7 for installing SCSI devices in your computer.
Using Your Computer 4-27