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Updating hard disk drive and adapter microcode, Updating, Hard – IBM Ultra320 User Manual

Page 32: Disk, Drive, Adapter, Microcode, Configuring, Pci-x, Dual

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Updating

Hard

Disk

Drive

and

Adapter

Microcode

Disk

drives

attached

to

this

RAID

adapter

must

contain

the

latest

microcode

level.

Microcode

updates

for

hard

disk

drives

attached

to

the

PCI-X

Dual

Channel

Ultra320

SCSI

RAID

Adapter

are

handled

automatically

by

the

iprupdate

utility,

which

executes

each

time

the

system

is

booted,

or

manually

by

the

iprconfig

utility.

The

iprupdate

utility

will

only

automatically

update

microcode

to

adapters

and

devices

if

it

is

determined

that

they

are

not

at

the

minimum

supported

level

of

microcode.

The

latest

microcode

level

for

your

drive

model

and

PCI-X

Dual

Channel

Ultra320

SCSI

RAID

Adapter

may

be

shipped

as

part

of

the

Linux

distribution.

If

an

update

or

replacement

is

needed,

the

latest

microcode

can

be

obtained

from

the

pSeries

microcode

Web

site:

http://techsupport.services.ibm.com/server/mdownload/download.html.

If

you

downloaded

new

microcode

from

the

Web

site,

follow

the

instructions

in

the

Readme

on

the

Web

site

to

install

it.

If

there

are

no

instructions

available,

install

it

as

follows:

1.

If

necessary,

log

in

as

root

user.

2.

Install

the

rpm

package

by

typing:

rpm

-ivh

–-ignoreos

scsi.0051.rpm

Press

Enter.

3.

Update

the

microcode

based

on

your

kernel

type:

If

you

are

using

a

2.4

based

kernel,

type:

iprupdate

Press

Enter.

Once

the

microcode

update

has

completed,

you

are

finished.

If

you

are

using

a

2.6

based

kernel,

type:

iprconfig

Press

Enter

and

go

to

the

next

step.

4.

If

you

are

using

a

2.6

based

kernel,

choose

the

Download

microcode

menu

option

and:

v

Select

the

adapters

and

devices

you

wish

to

update

v

For

each

selected

device,

select

the

microcode

image

you

wish

to

download

Configuring

the

PCI-X

Dual

Channel

Ultra320

SCSI

Adapter

The

PCI-X

Dual

Channel

Ultra320

SCSI

Adapter

permits

up

to

320

MB/s

operation

with

LVD

devices

on

a

wide

bus.

With

single-end

(SE)

devices,

it

can

run

up

to

40

MB/s.

The

maximum

speed

and

bus

width

are

automatically

negotiated

based

on

the

characteristics

of

the

attached

device.

You

can

use

iprconfig

to

control

speed

and

bus

width

for

devices

as

described

in

the

following

sections.

Limit

Adapter

Speed

Using

the

Maximum

SCSI

Bus

Speed

in

MB/s

The

default

maximum

adapter

speed

is

320

MB/s

for

LVD

mode

and

40

MB/s

for

SE

mode.

If

you

are

not

successful

running

at

these

speeds,

you

can

reduce

the

adapter

speed

by

changing

the

Maximum

Bus

Throughput.

Note:

The

device

driver

will

default

to

80

MB/s

on

the

2.4

kernel

until

the

iprupdate

utility

runs

and

160

MB/s

on

the

2.6

kernel

until

the

iprinit

utility

is

run.

After

the

utilities

complete,

higher

speeds

will

be

attempted.

These

utilities

are

configured

to

run

automatically

each

time

the

system

is

booted.

To

limit

adapter

speed,

do

the

following:

1.

At

the

command

prompt,

type

iprconfig

,

and

press

Enter.

20

PCI-X

Dual

Channel

Ultra320

SCSI

RAID

Adapter:

Installation

and

Using

Guide