Rac r2 Sem 00 Intro Jfv2

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ICopyright © 2006, Oracle. All rights reserved.

Introduction to RAC and Grid Computing


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What Is a Cluster?

• Interconnected nodesact as a single server.

• Cluster softwarehides the structure.

• Disks are availablefor read andwrite b all nodes.

• !perating s stem

is the same on eachmachine.

"ode

Disks

Interconnect

Cluster wareon each node


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Wh 'se RAC?

• (igh availabilit ) It can survive node and instancefailures.

• "o scalabilit limits) *ou can add more nodes later.• $a as ou grow) $a for +ust what ou need toda .• ,e grid computing feature)

– Can grow and shrink on demand – (as single&button addition and removal of servers – (as automatic workload management for services


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Clusters and %calabilit

%#$ model RAC model

Cache

C$' C$'

Cache

C$' C$'

#emor

Cache coherenc

%GA

C$' C$'

%GA

C$' C$'

%haredstorage

Cache fusion


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-evels of %calabilit

• (ardware) Disk input output /I !0• Internode communication) (igh bandwidth and low

latenc• !perating s stem) "umber of C$'s• Database management s stem) % nchroni1ation• Application) Design


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%caleup and %peedup

!riginal s stem

2334 of task

Cluster s stem scaleup

up to5334of task

up to

6334of task

7ime

(ardware7ime

7ime

Cluster s stem speedup

7ime 5

(ardware

(ardware

(ardware

(ardware

7ime(ardware

2334of task


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%peedup %caleup and Workloads

Workload %peedup %caleup

!-7$ and Internet "o *es

D%% with parallel 8uer *es *es

9atch /mi:ed0 $ossible *es


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I ! 7hroughput 9alanced) ;:ample

Diskarra

Diskarra @

Diskarra

;ach machine has 5 C$'s)5 B 533 #9 s B = 2 33 #9 s

;ach machine has 5 (9As) B 533 #9 s 2 33 #9 s

;ach switch needs to support 33 #9 sto guarantee a total s stem throughputof 2 33 #9 s

;ach disk arrahas one 5 Gbitcontroller)

B 533 #9 s 2 33 #9 s


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Demos

RAC scalabilit and transaction throughput)

http) www.oracle.com technolog obe demos admin demos.html


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7 pical Cluster %tack with RAC

(igh&speed Interconnect) Gigabit ;thernet'D$ $roprietar

$roprietar

Database shared storage

Interconnect

%ervers

!racle CR%

RAC-inu: '"IE

WindowsA%#

RAC-inu:

WindowsRAW

RAC-inu:

Windows!C



7 pical Components $erformance

7hroughput $erformance

Component theor /9it s0ma:imal 9 te s

(9A 2 5Gbit s 233 533 #b tes s

2 $ort %witch : 5Gbit s 2 33 #b tes s



RAC Certification #atri:

2. Connect and log in to http) metalink.oracle.com.5. Click the Certif tab on the menu frame.6. Click the Fiew Certifications b $roduct link.=. %elect Real Application Clusters and click %ubmit.>. %elect the correct platform and click %ubmit.



Complete Integrated Cluster Ware

# a n a g e m e n t

A $ I s

(ardware !% kernel(ardware !% kernel

Connectivit

#embership

#essaging and -ocking

Folume #anager file s stem

Applications

Cluster control; v

en t % er vi c

e s

% s t em #

an

a g em

en

t

Applications RAC

%ervices framework

Cluster control Recover A$Is

Automatic %torage #anagement

#essaging and -ocking

#embership

Connectivit

; v e n

t % e r v i c e s

i RAC !racle Clusterware


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A (istor of Innovation

"onblocking8ueries

!$%

RAC

Automatic%torage

#anagement

AutomaticWorkload

management

-ow&costcommodit

clustersResource#anager

DataGuard

;nterprise

Grids

!racleClusterware

Grid

Control

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