Finding current scsi controllers and targets, Types of controllers, Configuring for the sun environment – Quantum LTO-2 User Manual

Page 66

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Chapter 6 UNIX Settings
Configuring for the Sun Environment (Solaris 2.4, 2.5, 2.6, 7, 8, and 9)

52

LTO-2 Half-Height Tape Drive User’s Guide

To enable the tape driver to turn on data compression when writing data

to tape use the

.c.

option.

For commands that use density and tape size settings, the tape density is

124,000 bpi and the tape length is 1800 feet. For commands that use a

blocking factor, we recommend a blocking factor of 64 as a minimum (128

is recommended).

Configuring for the Sun Environment
(Solaris 2.4, 2.5, 2.6, 7, 8, and 9)

6

Use the following for attaching the LTO-2 Half-Height Tape Drive to Sun

Sparc and Intel systems.

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 commands .

modinfo

.

and .

dmesg

.

can be used to find the SCSI controllers in use and the SCSI

target devices installed.
For example, the command

.dmesg | egrep .target. | sort | uniq.

can find all

SCSI controllers and SCSI targets. The output may look similar to:

sd32

at

ithps0:

target2

lun0

sd34

at

ithps0:

target4

lun0

st21

at

ithps1:

target0

lun0

st22

at

ithps1:

target1

lun0

In this case, the LTO-2 Half-Height Tape Drive can be set for SCSI ID

address 2 through 6 and attached to controller ithps1 (this particular

controller also supports SCSI addresses 8 through 15).

Types of
Controllers

6

You may be able to view the main pages of three types of SCSI controllers

for Sun Sparc systems:
• esp
• glm
• isp

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