SAP HANA双机实现.pdf

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1、SetupHANASystemReplicationwithHANAStudioIntroduction:LocalPersistenceandBackups•Performlocalbackupsandstorethatregularonanexternalsite–Localfilesystem–NFSShare–SAN–BACKINTAPI(CertifiedSolutions=>Appendix)Dell-InternalUse-Confidential2Introduction:Whichreplicationmethodsareavailable?•

2、HANASystemReplication–PuresoftwarebasedandintegratedintoHANAsinceSPS05(noadditionalcharge)–Synchronousandasynchronousreplicationpossible–Nohardwareknowledgeneededformaintenanceandconfiguration–Complicatedupgradepathasbothmachinesmustbeupdatedoneafteranother–Ifthedistancebetweenbothda

3、tacentersarebiggerthan100km,asynchronousreplicationcouldbeused–SinceSPS06secondarysiteswithnostandbyhostsareallowed,sinceSPS07chainedscenariosareallowed•StorageReplication(iSCSIorFibreChannelConnection)–Onlysynchronousreplication–Forexperiencedstorageadministratorsasnonewlearningeffo

4、rtsareneeded–Onlyonesiteneedstobeupgraded–Forenvironmentsupto50km–ScriptedforeasyfailoverincaseofaproblemDell-InternalUse-Confidential3PreconditionsHANASystemReplication•Sourceanddestinationsystemmustsharethesamearchitecture•Thedestinationsystemmusthaveatleastthesameamountofservices/

5、mainmemorylikethesourcesystem•TheSystemIdentifier(SID)andInstanceNumbermustbethesameforbothsystems•Bothsystemsshouldbeinthesamenetworksegment–IPfailover–DNSchangeDell-InternalUse-Confidential4HANASystemReplication•Distancebetweendatacenters<100km–SynchronousSendacknowledgementtoprima

6、ryassoonasthedataisreceivedandpersisted–Synchronousin-memorySendacknowledgmenttoprimaryassoonasthedataisreceived–AsynchronousPrimarydoesnotwaitforthesecondary•Noadditionallicensesforthesecondarysystemrequiredasthelicenseswillbereplicated•SinceSPS08„fullsync“modeavailabletoensurethatt

7、hereisnodatagapbetweenprimaryandsecondary(primarywaitsforcommit)Dell-InternalUse-Confidential5DesignScaleUp-Systems(R910/R920)NamePrimusSecundusRolePrimary-PrimarySecondary6Dell-InternalUse-ConfidentialDesignScale-OutSystems(8Active+1StandbyHost)NamePrimusSecundusRolePrimarySecondary

8、Dell-Interna