High Availability Cluster Multiprocessing for AIX Version 4.3

Clustered processing power forbusiness critical applicationsHigh Availability Cluster Multiprocessingfor AIX Version 4.3HighlightsEnhanced system administrationfor monitoring clustersacross networksConcurrent access to resourcesfor outstanding applicationexecution and scalabilityConfiguration flexibility thatencompasses the RS/6000 ®product lineExtensive cluster managementtools for installing, configuringand managing your highlyavailable environment.Enhanced scalability to32 nodes with the HACMPEnhanced Scalability (ES)feature for all RS/6000 productsProduct descriptionHigh Availability Cluster Multiprocessing(HACMP) for AIX ® Version 4.3 is a controlapplication that can link up to 32RS/6000 servers or SP TM nodes whenusing the Enhanced Scalability featureinto highly-available clusters. Clusteringservers or nodes enables parallelaccess to their data, which can helpprovide the redundancy and fault resiliencerequired for business-criticalapplications. HACMP includes graphicaluser interface-based tools to helpinstall, configure, and manage yourclusters in a highly productive manner.Just as important, HACMP is flexible inconfiguration and use. Uniprocessors,symmetric multiprocessors (SMPs),and SP nodes can all participate inhighly-available clusters. You can mixand match system sizes and performancelevels as well as network adaptersand disk subsystems to satisfy yourapplication, network, and disk performanceneeds.HACMP/ES provides proactivemonitoring and reportingof possible hardware and/orsoftware failuresHACMP/ES users can chooseproduct-defined and/or userdefinedhigh availability eventsand resource monitorsHigh availability reduces outagescaused by both plannedand unplanned eventsDynamic reconfiguration andupgrades to the cluster whilethe cluster is operational

Feature BenefitsHorizontal scalabilitySupport for multipleavailability configurationsCluster ManagerTakeover scriptsSupport for clustermanagement SMITand VSM facilitiesCluster Single-Point-of-ControlDistributed Lock ManagerCluster Node Snapshot utility• Boosts overall performance and capacity by sharing disk and/or processor resources ofclustered systems, thereby spreading applications across RS/6000 servers• Provides scalable growth with reduced reinvestment and increased system availability• Enables mix of uniprocessor and multiprocessor nodes for application performanceand disk sharing• Allows tailoring of HACMP to your environment for a flexible solution that can changewith your business• Allows growth for availability in either standby or mutual takeover modes in 2- to32-node clusters• Advises of HACMP cluster configuration changes• Allows access to all shared data within the cluster–even if a system in the cluster fails• Offer several different ways to customize takeover actions in a cluster• Provides common interfaces (such as a drag-and-drop GUI) to make it easier to installand configure highly available cluster systems as well as maintain them on the network• Allows cluster management from a single system console for the cluster• Provides comprehensive highly available monitoring utilities to manage and tune clusters• Enables visualization of relationships between cluster hardware and software resources• Enhances systems management by helping to reduce system administration errors andenabling system tasks to be performed once for all cluster nodes• Provides a single-server image so the cluster looks like a single system for reducedsystem administration• Enables additional application-level facilities that can help coordinate concurrent executions,such as resource sharing on different platforms• Allows applications to simultaneously coordinate execution on complex clusters• Provides data integrity when sharing common data in a concurrent access cluster• Saves configuration and configuration changes to facilitate cloning of additional clusters• Allows maintenance of multiple cluster configurationsHACMP clusters can be configuredin several modes for different types ofprocessing requirements. Concurrentaccess mode fits environments whereall of the processors must work on thesame workload and share the samedata. In mutual takeover mode, the processorsshare the workload and backeach other up. Idle standby allows onenode to backup any of the other nodesin the cluster.Whichever mode you choose, HACMPprovides data access and backupplans to help optimize applicationexecution and scalability while helpingto guard against costly outages anddowntime. HACMP also enables serverclusters to be configured for applicationrecovery/restart to provide protectionfor your business-critical applicationsthrough redundancy.HACMP/ES with RS/6000Cluster TechnologyPlanned downtime can account fora large part of the total system downtime.HACMP allows planned downtimeto be minimized by concurrently performinghardware, software and othermaintenance activity while applicationscontinue to run on other nodes. Servicemay be moved from one cluster nodeto another and then returned after themaintenance activity is complete.Unplanned downtime can have oneof two causes: hardware or software.Together with facilities provided by AIXoperating system, HACMP can protectyour operation from hardware failures,by automatically moving services froma failing node to other cluster nodes.Software failures that cause a node failurecan be detected by HACMP, butsoftware failures that interrupt systemoperation and do not result in a systemfailure or hang require the next step inavailability technology represented byRS/6000 Cluster Technology (RSCT).Utilizing the Event Management componentof RSCT, problems with the operationof software, such as process failureor exhaustion of system resources, canbe detected and reacted to before theyresult in a critical failure.By using RSCT, the industry’s best 1high availability solution got better.HACMP/ES allows you to protect yourcomplete software infrastructure in waysthat you previously would not havethought possible. No longer do youneed to worry about random, unexpected,or nagging software problemscrippling your operation. HACMP/ES1D.H. Brown, “Competitive Analysis of Reliability,Availability, Serviceability and Cluster Featuresand Functions” Copyright 1998 D. H. BrownAssociates, Inc.

Feature BenefitsDynamic reconfigurationTask GuideEnhanced scalabilityCompatibility with previousHACMP versionsSupport for Ethernet, ®FDDI, Token-Ring, ATM,and Fibre Channel networkRS/6000 Cluster Technology• Enables continuous system maintenance without disruption• Allows cluster resources to be added or removed without disruption• Minimizes time and effort to create shared volume groups by dividing the task into discretesteps and automating commands• Provides support for 2 to 32 nodes• Incorporates RSCT technology to build proactive clusters• Allows detection of software failures• Reuses configurations to take advantage of current customer fallover control scenarios• Makes transition easier, removing the necessity to reinstall or reconfigure clusters whenupgrading from HACMP Version 3.1 or later• Provides mix and match for existing networks• Includes dual-ring network fallover for network reliability and flexibility• Allows multiple network attachment for primary and fallover nodes with all nodesfallover-capable• Detects and reacts to hundreds of system events to protect your completesoftware infrastructure• Allows for support of up to 32 nodes with HACMP/ES• Unrivaled levels of availability using standard componentscan monitor, detect, and react to thesefailures, allowing your system to remainoperational. HACMP/ES can be configuredto react to hundreds of systemevents. In addition to this advanced protection,RSCT allows HACMP/ES to supportup to 32 nodes.HACMP/ES also allows you to defineadditional cluster events. This allowsunrivaled levels of availability usingstandard components, while providingprotection against hardware failuresand capabilities to perform concurrentmaintenance.Additional functions in HACMPHACMP provides a choice of tools forinstallation, configuration and systemadministration tasks: use either AIXSystem Management Interface Tool(SMIT) or the Visual System Manager(VSM) GUI.To help automate the configuration process,you can replicate existing clusters,first using the information captured bythe Cluster Node Snapshot utility andthen use the Quick Configuration utilityto replicate the configuration at othersites. With the Dynamic Reconfigurationfacility, you can add and remove clusterresources, such as processors, adapters,disk subsystems, and applicationsoftware, without stopping clusteroperations. In addition HACMP supports“rolling upgrades.” This allows the clusterto be upgraded to a new versionof HACMP or the operating system withouttaking your applications down.With the Cluster Single-Point-of-Control(C-SPOC) facility, common clusteradministration tasks can be performedfrom any node in the cluster. And, withthe HAView function, you can use TivoliTME 10 ® NetView ® for AIX graphical networkmanagement interface to monitorclusters and their components acrossthe network from a single node.The Concurrent Resource Manager ofHACMP provides up to eight-way concurrentaccess to shared disks in ahighly available cluster, allowing you totailor the actions taken during a takeoverto suit your business needs.HACMP works well in conjunction withparallel database products like IBMDB2 ® UDB to build loosely coupledparallel clusters that provide high levelsof systems availability. Data can be splitor partitioned on up to 32 nodes forexceptionally scalable cluster performanceand high availability.For NFS environments, HACMP providesthe HANFS for AIX feature, whichdefines two AIX systems as a singlehighly available NFS server, eliminatingsingle points of failure. This servercan survive hardware and softwareoutages, and many planned outages,that can make a single system NFSserver unavailable.In SP clusters, your data is protectedwith the highly regarded Kerberos securityprotocol from the MassachusettsInstitute of Technology/Open SoftwareFoundation (MIT/OSF).Putting HACMP to workHACMP will help you:• Establish a cost effective, highly efficientclustered environment for critical applicationsin a variety of industries–retailpoint-of-sale, online banking, telemarketing,claims processing, or othertransaction-oriented applications.• Create a more complex concurrentaccess cluster where there is minimalfallover restart delay with up to eightsystems active, running the same applicationand sharing the same physicalresources• Perform upgrades and maintenanceto your system without disrupting workflow• Build customized cluster-aware applicationsfor your distributed network andmonitor network activities with theCluster Manager tool set

• Distribute applications across otherRS/6000 platforms that share the diskand processor resources of clusteredHACMP systems• Improve disk reliability by combiningwith AIX’s Logical Volume Manager diskmirroring• Detect and compensate for systemwidehardware errors using the localand remote management facilitiesof AIXYear 2000 readinessWhen used in accordance with itsassociated documentation, HACMP iscapable of correctly processing datedata between the 20th and 21st centuries,provided all other products usedwith it properly exchange date data.Service and supportHACMP is backed by IBM’s worldwideservice and support. IBM’s commitmentis behind every system sold, in orderto provide the highest possible customersatisfaction.IBM customer financing provides anadditional incentive. An array of attractiveand flexible financing programseases the acquisition of new technologyand helps protect you from therisk of obsolescence. Financing maybe available to credit-qualified customers.Rates are based on credit rating,financing terms and other options.Other restrictions may apply.For more information• Contact your IBM marketing representativeor IBM Business Partner• To learn more about the RS/6000,visit RS/6000 on the Internet atwww.rs6000.ibm.comWorldwide telephone numbersIBM Asia PacificAustralia132-426x RS/INFOBangladesh 880-2-889-783China: Beijing 10-437-6677 x CRCGuangzhou 20-778-7268 x CRCShanghai 21-6280-1070 x CRCHong Kong 852-2825-7878India (TATA) 080-526-9050Indonesia 21-251-2922Japan 0120-04-1992Korea 02-781-7114Malaysia 03-717-7788New Zealand 0800-801-800Philippines 02-819-2426Singapore 1-800-320-1234Sri Lanka 01-440810Taiwan 080-011011Thailand 02-273-4444Vietnam: Hanoi 84-4-426316Ho Chi Minh 84-8-241474IBM Europe, Middle East, or AfricaAbu-dhabi 971-2-345165Albania 35-542-32025Austria 43-1-21145-2500Bahrain 973-533995Belgium 32-2-225-3600Bosnia 38-771-219388Bulgaria 3592-731076Croatia 3851-6124500Czech Republic 420-2-67106111Denmark 4545-8031-6000Dubai 971-4-313155Egypt 202-3492533Finland 358-9800-42680France 33-(02)-3855-7777FYR of Macedonia 38991-113144Germany 49-180-55090Greece 30-1-688-1476Hungary 361-1654422Ireland 353-18-5020-5205Israel 972-177-022-3888Italy 39-167-016338Kuwait 965-2439900(IBM Europe, Middle East, or Africa, cont.)Netherlands 31-20-513-5151Norway 47-669999-9090Oman 968-791360Poland 48-22-8786-777Portugal 351-1-7915880Qatar 974-435395Romania 401-6158267Russia 7095-9402000Saudi Arabia 966-02-600007Slovak Republic 421-7-7806111Slovenia 38661-1252154South Africa 27-800-128-128Spain 34-901-100-400Sweden 46-20-220203Switzerland 41-155-1225Turkey 90-212-2800900UK 01705-492149Ukraine 38044-2270225Yemen 967-1-213745IBM Latin AmericaArgentina 319-6666Bolivia 591-2-361-555Brazil0800-11-1426 x317Chile800-216-216, or56-2-200-60-64Colombia 9800-17555Costa Rica 506-223-6222Dominican Republic 809-566-5161Ecuador593-432-1444 x5808El Salvador 503-298-5011Guatemala 502-331-5859Honduras 504-322-309Mexico(5) 627-2444 x3333Nicaragua 505-266-4141Panama 507-263-9977Paraguay595-21-444-094 x210Peru 511-349-0050Uruguay 902-3617Venezuela 800-33-426IBM North AmericaCanada & U.S.1-800-IBM-CALL(1-800-426-2255)© International Business Machine Corporation 1999Marketing Communications, ServersRoute 100Somers, New York 10589Printed in the United States of America2-99All rights reservedIBM, AIX, DB2, NetView and RS/6000 aretrademarks or registered trademarks ofInternational Business Machines Corporation.Tivoli and TME 10 are trademarks of Tivoli Systems,Inc. Other company, product or service names maybe trademarks or service marks of others.References in this publication to IBM productsor services do not imply that IBM intends tomake them available in every country in whichIBM operates.Photographs show engineering and designmodels. Changes may be incorporated inproduction models.This equipment is subject to FCC rules. It willcomply with the appropriate FCC rules before finaldelivery to the buyer.IBM hardware is manufactured from new parts,or new and used parts. Regardless, our warrantyterms apply.Information concerning non-IBM products wasobtained from the suppliers of these products.Questions on the capabilities of the non-IBMproducts should be addressed with the suppliers.G221-4265-06