Configuring for sgi irix, Finding current scsi controllers and targets, Modifying the irix configuration file – Quantum Tape Drive LTO-3 User Manual

Page 77

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Chapter 6 UNIX Settings

Configuring for SGI Irix

LTO-3 Tape Drive User’s Guide

63

Configuring for SGI Irix

6

Finding Current
SCSI Controllers
and Targets

6

To properly attach SCSI devices to hosts it is necessary to ensure that each

target device has a unique SCSI address. The command hinv can be used

to find all attached SCSI controllers and target devices. To search for all

SCSI controllers and devices use the command:

hinv –v | grep SCSI

The output of the command will be similar to the following:

Integral SCSI controller 0: Version ADAPTEC 7880
Disk drive unit 1 on SCSI controller 0
CD ROM unit 4 on SCSI controller 0
Integral SCSI controller 1: Version ADAPTEC 7880
Tape drive: unit 6 on SCSI controller 1: DAT

This output shows that a tape drive is present on SCSI controller 1 at SCSI

ID address #6. Available SCSI IDs are

0,2,3,5 6, 8 - 15 on controller 0

1 - 5 and 8 - 15 on controller 1 (this controller supports Wide/Ultra SCSI)

Modifying the IRIX
Configuration File

6

To attach the LTO-3 Tape Drive to IRIX the file .scsi. needs to be modified

by a text editor. The file can be found in

/var/sysgen/master.d.

Open the

file and use the text editor to add the following at the end of the tape

device entries:

For IRIX 6.4/6.5

6

{DATTAPE, TPDAT, 8, 7, “CERTANCE”, “ULTRIUM 3”, 0, 0, {0},
MTCAN_BSF | MTCAN_BSR | MTCAN_APPEND | MTCAN_SETMK |
MTCAN_PREV | MTCAN_SYNC | MTCAN_SPEOD | MTCAN_CHKRDY |
MTCAN_VAR | MTCAN_SETSZ | MTCAN_SILI | MTCAN_SEEK |

Note:

SCSI ID #7 is almost always dedicated to the SCSI controller.

Never configure your target device for ID 7 unless you are

absolutely sure that the controller is not addressed for ID 7.

See

table 2

on page 16 to view how to set the SCSI ID address

jumpers for the LTO-3 Tape Drives.

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