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Wide bus enabled, Quick arbitration and select (qas) capability, Problem determination – IBM Ultra320 User Manual

Page 39: Problem, Determination, Wide, Enabled, Quick, Arbitration, Select

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Change

SCSI

Bus

Configuration

Current

Bus

configurations

are

shown.

To

change

setting

hit

"c"

for

options

menu.

Highlight

desired

option

then

hit

Enter

c=Change

Setting

/dev/ibmsis0

BUS

0

Maximum

Bus

Throughput

.

.

:

320

MB/s

320

MB/s

BUS

1

*160

MB/s

Wide

Enabled

.

.

.

.

.

.

.

:

Yes

80

MB/s

Maximum

Bus

Throughput

.

.

:

320

MB/s

40

MB/s

20

MB/s

10

MB/s

5

MB/s

Press

Enter

to

Continue

e=Exit

q=Cancel

5.

Select

Maximum

Bus

Throughput

field

and

under

the

desired

bus

and

press

c.

6.

Press

F4.

7.

Select

the

desired

bus

speed:

5,

10,

20,

40,

80,

160,

or

320

MB/s,

and

press

Enter.

Note:

Depending

on

your

hardware,

some

of

these

options

may

not

be

available.

8.

Press

Enter

to

continue.

9.

Press

c

to

confirm

the

changes.

Wide

Bus

Enabled

If

you

are

attaching

an

external

device

with

an

8-bit

SCSI

interface

cable,

set

Wide

bus

enabled

to

no.

Follow

the

steps

in

“Limit

Adapter

Speed

Using

the

Maximum

SCSI

Bus

Speed

in

MB/s”

on

page

20.

Quick

Arbitration

and

Select

(QAS)

Capability

The

QAS

capability

is

automatically

controlled

by

the

adapter.

Problem

Determination

If

you

encounter

any

problems

with

the

adapter

after

the

installation,

refer

to

your

system

unit

documentation

for

information

about

running

diagnostics

or

other

problem-determination

procedures.

Refer

to

the

PCI-X

SCSI

RAID

Controller

Reference

Guide

for

Linux,

order

number

SA23-1327.

Chapter

7.

Installing

and

Setting

Up

Software

for

the

PCI-X

Dual

Channel

Ultra320

SCSI

RAID

Adapter

(Linux

)

27