Configuring Scsi Termination - HP P5389A - Intel Pentium III-S 1.4 GHz Processor Upgrade User Manual

Configuring SCSI Termination

The devices on each physical end of a SCSI cable must be terminated. Depending
upon how you configure your system, you will either terminate two SCSI devices, or
the SCSI controller and one peripheral SCSI device.
IMPORTANT: If you are using multiple SCSI busses on a single controller, each separate bus
must be terminated.
SCSI termination for Adaptec SCSI RAID controllers is configured through the
SMOR utility or from the Configure Host Bus Adapter window in Storage Manager.
The controller has four possible termination settings.
Table 3-1: Termination Settings
Setting
Auto
Disabled
Enabled
High Only
High Only termination is available only for devices on Bus 0. Devices on the second
bus (Bus 1) must have 16-bit termination.
By using a 68-pin to 50-pin SCSI cable adapter, an 8-bit SCSI device can be attached
to a Wide SCSI cable along with Wide SCSI devices. However, the device at the end
of the cable must be a Wide SCSI device so that all SCSI signals are terminated. For
internal and external cables where one cable is an 8-bit (Narrow) SCSI cable, set the
controller termination to High Only.
HP 2100S SCSI RAID Controller User Guide
Function
The default setting. This setting can be used for all cabling
conditions, except where two Narrow (8-bit) cables are
attached or both a Narrow and Wide cable are used. For this
case, use High Only.
Turns off controller termination unconditionally.
Turns on controller termination unconditionally.
Terminates only the additional signals that are used on Wide
SCSI devices. This allows a Narrow cable or a Wide and
Narrow cable to be simultaneously attached to the controller.
Installing Your Controller
3-3