Power Systems Roadshow Business Continuity

April 2008

Although hardware is now highly reliable, hardware failures account for only a small minority of system outages

Several studies place the proportion between 20% and 45%

Human error, software error and planned maintenance cause the majority of service outages

The Availability Business Challenge

TheWideningGap

Requires continuous information availability – by design

More business onlineMore applications & data

Ability to deliver through traditional backup and recovery planning

More complex systemsLess window to recover

Increasing cost of information unavailability

Impact of “Non”-Availability

Lost businessImpact varies between companiesCan be permanently lost business

Image and publicityFines and penalties

Government and industry fines, service level agreements

Staff costsPay for inactivity, overtime, recovery actions

Impact on business decisionsSome business intelligence information must be real time

Business Availability Definitions

Service Level Agreements (SLA) establish measurable targets of performance and availability

Provides a common understanding of the nature, level, and quality of service required

Provides priorities for availability management and investmentsEliminates assumptions, aligns business requirements with IT services

Recovery Objectives for applications are key business measurements required to assess availability technologies and design solutions

RPO: Recovery Point Objective

RTO: Recovery Time Objective

Meeting Recovery Objectives

SyncReplication

Journaling

Tape Backup

JournalApply

Clusters

Tape Restore

ManualTransaction

Recovery

Outage

SecsMinsHrsDays Mins Hrs Days Wks

Recovery Point Objective Recovery Time ObjectivePast Present Future

HA & DR Differences

High Availablity

Restart < 15 minutesAutomated TakeoverCovers failures :

at local siteprotects against physical errors

ServerDisksAdapterNetwork

protects against fatal SW errors

Operating systemsDatabasesApplicationsServices

Disaster Recovery

Restart ~ 4 HoursManual procedures involvedProtects against

loss of primary siteCovers failure of:

HA solutionprimary site (Infrastructure)logical errorsfatal user errorloss of complete Infrastructure Blocks

Caused bydisaster of natureHeavy impact on primary site

Disaster Recovery Plan required

Assess and Define

Define your Service Level Agreements (SLA)You will likely not meet availability expectations if business expectations are not known or current

Define your Recovery ObjectivesRecovery Time Objective (RTO)Recovery Point Objective (RPO)

Define the outages that must be masked or eliminatedPlanned outageUnplanned outagesDisaster Recovery

You must first assess and define the requirements . . . . before designing a solution:

Virtual Tape

TS75xxVirtual Tape

Building Blocks: Shrinking A Backup Window

Optimize Hardware• Ensure the current backup isn’t

bottlenecked• Invest in faster tape and server

hardware

CPU

Disk

Buses

Tape

Concurrent / Parallel saves

Tape

Tape

Second System for Saves• External Disk FlashCopy• Run Backup on HA System

Tape

Primary System

Saves while Users are Online• Use Save While Active• Use Domino Online Saves

Tape

Save Less Data

SavChgObj Selective Restructure

HA & DR principles

Clustering alternatives: „shared nothing“ vs. „shared everything“

(Parallel Sysplex/Oracle RAC)

One database Two databases

Replication on database levelReplication on storage level

sharedstorage

ClusterNode

ClusterNode

DB StandbyDB

Replication

Power Systems Availability solutions

PowerHA™

What is PowerHA?

Business Continuity Solutions for

Mission-critical applications

Disaster recovery

IBM storage optimization

Integrated optimization for AIX, Linux and IBM i

The future with IBM R&D

High Availability and Disaster Recovery solutions from IBM for your mission-critical UNIX, i and Linux applications

PowerHA protects against service outages by detecting problems and quickly “failing over” to backup hardware

Two nodes (A and B)Two networks

Private (internal) networkPublic (shared) network

Shared diskAll data in shared storage is available to both nodes

Critical applicationsDatabase serverWeb server (dependent on DB)

Shared DiskShared Disk

PrivatePrivateNetworkNetwork

!Company Shared NetworkCompany Shared Network

IBM

server

pSeries

AA

Web Srv IBM

server

pSeries

BB

Database

IBM

server

pSeries

BB

IBM

server

pSeries

AA

Example Failure #1: Node failure

Shared DiskShared Disk

PrivatePrivateNetworkNetwork

Node A fails completelyPowerHA on node B detects the loss of node ANode B starts up its own instance of the Web Server applicationWeb services are temporarily taken-over by node B until node A is brought back online

!Company Shared NetworkCompany Shared Network

Web Srv Database

Capacity BackUp configuration ensures continuous availability

Active Processors Inactive ProcessorsW

eb S

erve

r

Ord

er E

ntry

HACMP

HACMP

Production Database Server

Capacity BackUp Server (running applications on active processors)

Database Server

Shared Disk

PowerHA on the primary machine detects the failureRunning in a micro-partition on the CBU server, PowerHA grows the backup partition, activates the required inactive processors and restarts the application

PowerHAPowerHA

PowerHA http://www-03.ibm.com/systems/power/software/availability/

Cluster management solutions for high availabilityCan enable near continuous application serviceMinimize impact of planned and unplanned outages

PowerHA™ for AIX® and Linux (formerly HACMP™)PowerHA for i (formerly HASM)

PowerHA for AIX

PowerHA for i

Power HA and Cluster Solutions

Eliminate System Outages

Reduce Frequency & Duration of Outages

RAS (Reliability, Availability,

Serviceability

Concurrent Maintenance

Predictive Failure

Analysis

Fault Isolation

Selective Fault Tolerance

Service Agent Call Home

Remote Support

Balanced SystemsGrowth

Power Systems Availability Strategy

Planned Availability = Reliability + Serviceability + Recoverability + Security and Compliance + Manageability

Backup and Recovery

Systems Management

Performance Management

Virtualization

Data Resiliency

Application Resiliency

Cluster Management & Automation

Capacity Backup Edition (CBU)

HA and DR Logical Replication Software Solutions

IBM iCluster www-3.ibm.com/systems/power/software/availability

Maximum Availability www.maxava.com

Trader’s www.quick-edd.com/uk

Vision Solutions www.visionsolutions.com

XSM www-3.ibm.com/systems/power/software/availability

Questions?

Summary 1

Revolutionair annoncement, bringing together 15.000 applications on the technology leading platformBlade integration, new options to integrate windows with Power or to run AIX, IBM i and Linux on BladeNew enchancements in iOS V6R1New enchancements in AIXBusiness Resiliency on Power / advanced virtualisation with PowerVM Green IT - lower TCO

Summary 2

Evaluation formsService Vouchers Special thanks to On Demand RentalsDrinks