Configuring HP-UX For Peripherals

94 Chapter3

Conﬁguring Interface Cards

Selecting Device Drivers for Your Interface Cards

additional termination.

SCSI Parity

All devices on a SCSI bus must be consistent in parity-checking

capability. If any device on the SCSI bus does not generate parity, all

devices on the bus, including the adapter, must not check parity.

(Although parity-checking is selectable, the adapter always generates

parity.)

If a SCSI device cannot match the parity-checking capability of other

devices on the bus, it must be installed on a separate SCSI bus.

Changing the Bus Address of a SCSI Device

Step 1. Shut down and halt the system using the /usr/sbin/shutdown -h

command. On systems with powerfail mode, be sure to also turn off the

battery backup.

Step 2. TURN OFF the computer and unplug the power cord.

Step 3. Turn off the device.

Step 4. Change the bus ID on the device.

Step 5. Turn on the device.

Power on all SCSI peripherals and allow them to complete their selftest

before powering on the SPU.

Step 6. Turn on your system.

Use of non-Hewlett-Packard peripherals is not supported by

Table 3-15 SCSI Terminators

Part

Number Kind of Terminator No. Pins Application

C2904A high-density w/ thumb screw 50 Active SCSI-II

C2905A high-density w/ thumb screw 68 Active SCSI-III

K2290 low-density w/ thumb screw 50 Passive SCSI-II

K2291 low-density w/ bail connector

(wide mouth)

50 Passive SCSI-II