Settings in SCSI Setup
Connecting SCSI devices
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A26361-D970-Z120-3-7619
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.
Ê
Be sure the ends of the SCSI bus are correctly terminated.
Ê
Connect the SCSI devices to the SCSI connector on the system board by
means of the SCSI cable.
i
Only single-ended SCSI devices may be linked to the ultra-wide SCSI
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 Server
under the heading "System unit" ("Installing a disk drive").
Further information is provided in the descriptions of your SCSI devices.
The following hints are only for the connectors at the onboard ultra-wide SCSI
controller.
Connectors and cables
The connector of the ultra-wide SCSI controller is 68pin.
The connector of 8-bit SCSI devices is 50pin; the connector of 16-bit SCSI
devices is 68pin.
If you want to connect 8-bit SCSI devices to the ultra-wide SCSI controller you
need an adapter (from 68pin to 50pin).
If you want to operate an 8-bit SCSI device as the last device on a SCSI line you
need an adapter (from 68pin to 50pin) with high-byte termination.
i
Only use good quality SCSI lines, otherwise you may have transmission
problems.
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