an e-business perspective Digitask Consultants, Inc. digitask@digitask (212) 682-6652

Copyright ©2003 Digitask Consultants Inc., All rights reserved

an e-business perspectivean e-business perspective

Digitask Consultants, Inc.Digitask Consultants, [email protected]@digitask.com

(212) 682-6652(212) 682-6652

High AvailabilityHigh AvailabilityHigh Performance SystemsHigh Performance Systems


What is High Availability?What is High Availability?

Availability ClassificationAvailability Classification

Uptime Levels Uptime Levels (%)(%)

Fault TolerantFault Tolerant 99.999999.9999 < 1 minute< 1 minute

Extremely High AvailabilityExtremely High Availability 99.999 99.999 5 minutes5 minutes

Fault Resilient High Availability Fault Resilient High Availability 99.9999.99 53 minutes53 minutes

High AvailabilityHigh Availability 99.999.9 8.8 hours8.8 hours

Commercial AvailabilityCommercial Availability 99.599.5 43.8 hours43.8 hours

Annual Annual DowntimeDowntime

Sources: Gartner Group, Transaction Processing Performance Council, Compaq


Why Should I Care?Why Should I Care?

Opportunity!


Why Should I Care?Why Should I Care?


Source: Gartner Group and Contingency Planning ResearchSource: Gartner Group and Contingency Planning Research

Financial Brokerage operations ???????$ 6,500,000

Average Cost per Hour of Downtime

Industry Application

Financial Credit Card Sales ???????

Media Pay Per View ???????

Retail Home Shopping (TV) ???????

Retail Catalog Sales ???????

Transportation Airline Reservations ???????

$ 2,600,000

$ 90,000

$ 150,000

$ 113,000

$ 89,500

Cost of DowntimeCost of Downtime


Cost of Downtime - Equity ValueCost of Downtime - Equity Value


Cost of Downtime - Equity ValueCost of Downtime - Equity Value


Top 6 Reasons for Server FailureTop 6 Reasons for Server Failure

Software defects/failures Software defects/failures Planned administrative downtimePlanned administrative downtime

OS upgrades, DB administration, etc.OS upgrades, DB administration, etc.

Operator error Operator error Hardware outage/maintenance Hardware outage/maintenance Building/site disasterBuilding/site disaster

fires, sprinkler systemsfires, sprinkler systems Metropolitan disaster Metropolitan disaster

storm, floodsstorm, floods

Survey of IS managers Source: Gartner Group


The Solution...The Solution...

OpenVMS Windows NTTru64 UNIX TruClusters


TruClusters - Yesterday V 1.xTruClusters - Yesterday V 1.x

Each builds upon the otherEach builds upon the other

ProductionProductionServerServer

TRU64 UNIXTRU64 UNIXAlphaServer SystemsAlphaServer Systems

Available ServerAvailable Server


TruCluster 1.xTruCluster 1.x

Memory Channel Interconnect

Private DisksSystem Disk

HSZx0

Private DisksSystem Disk

HSZx0


TruCluster 5TruCluster 5

Memory Channel

Interconnect


TruCluster Server Version 5.0TruCluster Server Version 5.0

Single system image Single system image clustercluster

Shared file systemShared file system Dramatically easier Dramatically easier

managementmanagement Simpler application Simpler application

availability and scalabilityavailability and scalability


TruCluster 5.0 Feature SummaryTruCluster 5.0 Feature Summary Easier management Easier management Clusterwide file systemClusterwide file system Cluster aliasCluster alias Application availability facilityApplication availability facility

//usr/var/.../.../.../.../.../...

Cluster wide storageCluster wide storage Support for larger & more flexible configurationsSupport for larger & more flexible configurations No requirement for symmetric configurationsNo requirement for symmetric configurations No need for private storage (all storage can be on shared No need for private storage (all storage can be on shared

buses)buses)


Tru64 UNIX System ManagementTru64 UNIX System ManagementUNIX

Workstation

PC

(LAN)

(LAN / WAN)

(LAN / WAN)

SNMP WBEM

SingleSystem

Cluster

Tru64 UNIXManagement

SNMP WBEM

Tru64 UNIXManagement

X11

Web / Java

CLIScript


Cluster ManagementCluster Management

The best cluster management is

the management you NEVER have to do!

//usr/var/.../.../.../.../.../...

TraditionalUNIX Clusters

TruCluster V5.0


Single cluster-wide namespace with a single shared rootSingle cluster-wide namespace with a single shared root Same view from all cluster membersSame view from all cluster members

Mechanism to address member-specific filesMechanism to address member-specific files Client/Server model initiallyClient/Server model initially Layers on existing file system Layers on existing file system

AdvFS, NFS, UFS (r/o), CDFSAdvFS, NFS, UFS (r/o), CDFS Transparent file system failover and recoveryTransparent file system failover and recovery Integrated with cluster alias for NFS serverIntegrated with cluster alias for NFS server

Cluster File SystemCluster File System

//usr/var/.../.../.../.../.../...


System and Storage ManagementSystem and Storage Management CFS is an enabling technologyCFS is an enabling technology

Most management operations “just work”Most management operations “just work” Single copy of most configuration filesSingle copy of most configuration files

Device names are consistent cluster-wideDevice names are consistent cluster-wide Storage devices are available everywhereStorage devices are available everywhere Fewer things to manageFewer things to manage

Operating system and applications installed once per clusterOperating system and applications installed once per cluster Automatic disk and file system failoverAutomatic disk and file system failover

Single security domainSingle security domain Base and enhanced securityBase and enhanced security


System and Storage ManagementSystem and Storage Management BUT… Still must manage some things separatelyBUT… Still must manage some things separately

Kernel tuning, process tuningKernel tuning, process tuning Network adapter, tty configurationNetwork adapter, tty configuration LicensingLicensing


Cluster AliasCluster Alias

Cluster appears as single system to Cluster appears as single system to networknetwork

Can support multiple aliasesCan support multiple aliases Single host name to clientsSingle host name to clients Transparent handling of node Transparent handling of node

and adapter failuresand adapter failures Dynamic load balancingDynamic load balancing Network services Network services Efficient forwarding over Efficient forwarding over

cluster interconnectcluster interconnect

AlphaServerlabrador

1.1.1.1

AlphaServergolden1.1.1.2

AlphaServerbasset1.1.1.3

AlphaServerbluetick1.1.1.4

Cluster - canine 1.1.1.0

Client Client Client

Router

Retriever

Hound


Application SupportApplication Support Applications need only be installed once in the cluster Applications need only be installed once in the cluster

although may be licensed per nodealthough may be licensed per node Single instance applicationsSingle instance applications

May only run on one member of a cluster at a timeMay only run on one member of a cluster at a time– Multiple copies would conflict with each otherMultiple copies would conflict with each other– Typical old-style ASE applicationsTypical old-style ASE applications


Single Instance ApplicationsSingle Instance Applications

Interconnect ChannelMemory

Application ApplicationApplication


Application SupportApplication Support

Multiple instance applicationsMultiple instance applications May run on multiple or all cluster membersMay run on multiple or all cluster members

– Multiple copies don’t conflictMultiple copies don’t conflict– Some ASE applications can now run on multiple membersSome ASE applications can now run on multiple members


Multi-Instance ApplicationsMulti-Instance Applications


Application ApplicationApplication Application


Cluster Application AvailabilityCluster Application Availability Provides application failover or restart within the Provides application failover or restart within the

clustercluster Application and resource dependenciesApplication and resource dependencies Application profile determines failover policy and Application profile determines failover policy and

dependenciesdependencies Mechanism for application-specific monitoringMechanism for application-specific monitoring

Monitoring of applications via ‘check’ entry in action Monitoring of applications via ‘check’ entry in action scriptscript

Command line and GUI-based managementCommand line and GUI-based management ASE application start/stop scripts easily migrate with ASE application start/stop scripts easily migrate with

minimal changesminimal changes


Application SupportApplication Support

Cluster aware applicationsCluster aware applications Use cluster features such as the Distributed Lock ManagerUse cluster features such as the Distributed Lock Manager Coordinate storage r/w access from multiple nodesCoordinate storage r/w access from multiple nodes


Multi-Instance ApplicationsMulti-Instance Applications


Application Application ApplicationApplication


TruCluster Advantages Over TruCluster Advantages Over Other UNIX ClustersOther UNIX Clusters

Load BalancingLoad Balancing Dynamic load balancing of Dynamic load balancing of

client connectionsclient connections

Cluster ManagementCluster Management Applications are installed Applications are installed

once for entire clusteronce for entire cluster Configuration changes made Configuration changes made

once for the clusteronce for the cluster Users are authorized once for Users are authorized once for

all cluster nodesall cluster nodes

Installation and ConfigurationInstallation and Configuration Rolling upgrade of o/sRolling upgrade of o/s Single system imageSingle system image Cluster-wide file systemCluster-wide file system Cluster aliasCluster alias Single security domainSingle security domain Cluster-wide naming of Cluster-wide naming of

storage devicesstorage devices Single event manager/error Single event manager/error

loglog


TruCluster Advantages Over TruCluster Advantages Over Other UNIX ClustersOther UNIX Clusters Hardware specificsHardware specifics

Interconnect speed (6-12x faster)Interconnect speed (6-12x faster) Maximum number of nodes: 8Maximum number of nodes: 8 Largest Node supported: ~125,000 tpm-CLargest Node supported: ~125,000 tpm-C Smallest node: AlphaServer 800 (<$7,000)Smallest node: AlphaServer 800 (<$7,000) Support for Switched Fibre ChannelSupport for Switched Fibre Channel Support for simultaneous direct access to database tablesSupport for simultaneous direct access to database tables Available API for parallel resource lockingAvailable API for parallel resource locking Available up-time guarantee 99.99%Available up-time guarantee 99.99%


$

Number of Nodes

Traditional UNIX Clusters

Single Systems

TruCluster TruCluster Server V5.0Server V5.0

Bottom Line - ManagementBottom Line - Management

Tru64 UNIX TruClusters cost less to manage


Bottom Line - ReliabilityBottom Line - Reliability

Priority Executive Package

Availability ReviewOn-site Spares

Installation

Priority PremierPackage

Plus joint effort by

COMPAQ & the customer

Business Critical Custom

Intim

acy

of P

artn

ersh

ip

For Eligible Alpha systems

Uptime Guarantees99.99%

Customer need for high availability

Tru64 UNIX TruClusters are more reliable


Bottom Line - SizeBottom Line - Size

Tru64 UNIX TruClusters are more scaleable


TruCluster V5.0TruCluster V5.0

"Nines are necessary, but not sufficient. Simple, "Nines are necessary, but not sufficient. Simple, straightforward use is also vital... Here straightforward use is also vital... Here Compaq has Compaq has excelledexcelled, going the distance in building multi-system , going the distance in building multi-system scalability, reliability, and manageability into the scalability, reliability, and manageability into the heart of UNIX." heart of UNIX."

Jonathan Eunice, Illuminata, Inc., 4/99Jonathan Eunice, Illuminata, Inc., 4/99

Bottom Line - Industry OpinionBottom Line - Industry Opinion


Thank YouThank You

John ZimmermanJohn [email protected]@digitask.com

(212) 682-6652(212) 682-6652

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