Oracle Active Data Guardvs Storage Remote MirroringOracle主动数据守护与存储远程镜像

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1、AnOracleWhitePaperJanuary2015OracleActiveDataGuardvsStorageRemoteMirroringOracleActiveDataGuardvs.StorageRemoteMirroringExecutiveOverviewAcriticalobjectiveforanyenterpriseistheprotectionofcorporateassets,includingdata.Enterprisesareequallyconcernedabouttheimp

2、actofapplicationdowntimewhendatabasesbecomeunavailableduetooutagescausedbydatacorruptions,component,systemandsitefailure,orhumanerror.Increasedcost,lostrevenue,negativepublicity,andregulatorynon-compliancearejustafewofthemanynegativeconsequencesresultingfromd

3、atalossanddowntime.Eventhoughabullet-proofdisasterrecovery(DR)solutionofferstheultimateprotectionforenterprisedata,businessesoftendon’tplaceahighpriorityonDRduetothefactthatdisasterrecoveryinfrastructureisexpensiveandrarelyused.Thisleadstounder-investmentinDR

4、and/orthedeploymentofsolutionsthatprovideinadequateprotectionandlittleassurancethattheywillactuallyworkwhencalledupon.OracleDataGuardandActiveDataGuardfundamentallychangeswhatenterprisesshouldexpectfromaDRsolutionfortheOracleDatabase.Itprovidesthebestpossible

5、dataprotectionandapplicationavailabilityandsimultaneouslyreducesthecostofDRbyutilizingstandbysystemstooffloadproductionworkloadwhileinastandbyrole.DataGuard’sdeepintegrationwithOracleDatabasealsoenablesautomaticfailoverforunplannedoutagesanddatabaserollingupg

6、radestominimizedowntimeandriskwhenperformingplannedmaintenance.ThesecapabilitiesmakeDataGuardacomprehensivesolutionforHAandDR.ActiveDataGuardalsoeliminatestheriskinherentingenericdataprotectionofferedbystorage-centricsolutionssuchasarray-basedremotemirroring.

7、OnlyActiveDataGuardprovidescontinuousreal-timeapplicationlevelvalidationthattheDRsystemisreadyforfailoverifneeded.ThisbriefisintendedforI.T.ManagersandArchitectswhoareevaluatingdisasterrecoverysolutionsfortheOracleDatabaseanddescribeswhyDataGuardandActiveData

8、GuardarepreferredtotraditionalDRsolutionsbasedonstoragetechnologies.1OracleActiveDataGuardvs.StorageRemoteMirroringIntroduction:DataGuardandActiveDataGuardManagedStandby,theprecursortoDat