Connecting Scsi Devices - Siemens D981 Technical Manual

Connecting SCSI devices

Connecting SCSI devices
SCSI devices and controllers are connected together via a common cable (SCSI
bus).
The termination (terminating resistors) must be enabled (or installed) on the last
device connected to the SCSI cable. The termination must be disabled (or
removed) from all other SCSI devices.
How you activate or deactivate the termination of the SCSI devices, see
description of your SCSI devices.
The system board provides the SCSI bus termination port to terminate the SCSI bus.
Instead of terminating the last drive on the SCSI line, you can also plug the free
end of the SCSI line into the SCSI bus termination port.
1 = SCSI bus port (controller)
2 = SCSI line
3 = SCSI bus port (termination)
²
Be sure the ends of the SCSI bus are correctly terminated.
²
Connect the SCSI devices to the SCSI connector on the system board by
means of the SCSI cable.
Only single-ended SCSI devices may be linked to the ultra-wide SCSI
i
controller. Most SCSI devices meet this requirement. If you are in any
doubt, contact your sales office or customer service.
How you install internal devices in the system unit and connect them to the power
supply is described in the Operating Manual or Technical Manual for your device
in the chapter "System unit" (paragraph "Installing a disk drive").
Further information is provided in the descriptions of your SCSI devices.
18 - English
4
2
1
5
6
4 = SCSI drive 1 (not terminated)
5 = SCSI drive 2 (not terminated)
6 = SCSI drive 3 (not terminated)
SCSI Setup
3
A26361-D981-Z120-9-7419