1、NetAppxClusteredDataONTAP8.2DataProtectionGuideNetApp, Inc.495 East Java Drive Sunnyvale, CA 94089 U.S.Part number: 215-07963_A0May 2013Telephone:+1(408)822-60Fax:+1(408)822-4501Supporttelephone:+1(888)463-8277Web:Feedback:doccommentsContentsIntroductiontodataprotection10Methodsofprotectingdata10Dat
2、abaseprotection11Whatadatalossdisasteris11Toolsforprotectingagainstdata-lossdisasters12DataprotectioninaSANenvironment13Typesofdataprotectionpolicies13Planningyourdataprotectionstrategy15WorkingwithSnapshotcopies15WhataSnapshotcopyis15HowSnapshotcopieswork15BackupandrecoverytasksyoucanperformwithSna
3、pshotcopies16GuidelinesforworkingwithSnapshotcopiesofInfiniteVolumes17HowstorageclassesafleetSnapshotcopiesofInfiniteVolumes18MaximumnumberofSnapshotcopies18UseraccesstoSnapshotcopies19CreationofSnapshotcopyschedules20DeletingSnapshotcopiesautomatically23ViewingsettingsfortheautomaticdeletionofSnaps
4、hotcopies24WhatSnapshotdiskconsumptionis24WhattheSnapshotcopyreserveis26Workingwithmirroringtechnology28Componentsofamirrorrelationship28DataprotectionmirrorrelationshipsforFlexVolvolumes29DataprotectionmirrorrelationshipsforanInfiniteVolume29Whenadestinationvolumegrowsautomatically30Pathnamepattern
5、matching30Languagesettingrequirement30Useraccesstodestinationvolumes31GuidelinesforcreatingrelationshipsbetweenclustersorVservers31Limitationsfordataprotectionmirrorrelationships33WorkingwithFlexVolvolumebackupvaults35WhataFlexVolvolumebackupvaultis35WhichdatagetsbackedupandrestoredfromaFlexVolvolum
6、evault36WhichdatadoesnotgetbackeduptoaFlexVolvolumevault36HowaFlexVolvolumebackupvaultworks37HowFIexVolvolumebackupvaultsworkwithdatacompression38FlexVoIvolumebackupvaultlimitations38DataprotectionforVservernamespaceandrootinformation38GuidelinesforplanningSnapshotcopyscheduleandretentionforbackupva
7、ults39Supporteddataprotectiondeploymentconfigurations40Whatabasicbackupdeploymentis42Whatsource-to-destination-to-tapebackupis42Howamirror-mirrorcascadeworks43Howamirror-vaultcascadeworks43Howavault-mirrorcascadeworks44Howamirror-vaultfanoutworks45Howamultiple-mirrorsfanoutworks46Protectingdatausing
8、Snapshotcopies48ManagingSnapshotcopies48CommandsformanagingSnapshotcopies48ManagingSnapshotpolicies49WhatthedefaultSnapshotpolicyforanInfiniteVolumeis49HowSnapshotpoliciesareassociatedwithvolumes49CommandsformanagingSnapshotpoliciesandschedules50StrategiesforcreatingaSnapshotcopypolicy51Namingconven
9、tionforscheduledSnapshotcopies51Whatprefixesare52UsingprefixestonameautomaticSnapshotcopies52RestoringfilesfromtheSnapshotcopyofaFlexVolvolume53RestoringasinglefilefromaSnapshotcopyofaFlexVolvolume53RestoringpartofafilefromaSnapshotcopyofaFlexVoIvolume54RestoringthecontentsofavolumefromaSnapshotcopy
10、54SnapshotrestorationusingShadowCopyClienttools55ManagingSnapshotcopydiskspace55MonitoringSnapshotcopydiskconsumption55ManagingdataprotectionusingSnapMirrorpolicies57Commandsformanagingmirrorandvaultpolicies57HowSnapMirrorpoliciesworkwithclustersandVservers57ComparisonofwhatclusteradministratorsandV
11、sc,cradministratorscanmanage58Guidelinesfornamingmirrorandvaultpolicies58Exampleofcreatingatieredbackuppolicy59Providingdisasterrecoveryusingmirroringtechnology61ManagingdataprotectionmirrorcopiesforFIexVolvolumes61CreatingadataprotectionmirrorcopyforFlexVolvolumes61Managingmirrorrelationships63Comm
12、andsformanagingSnapMirrorrelationships63UsingextendedqueriestooperateonmanySnapMirrorrelationships66Whattapeseedingis66PerformingtapeseedingusingSMTape67ScalabilitylimitsforSMTapcbackupandrestoresessions74Listingtheschedulestateofamirrorrelationship74SchedulingSnapMirrortransfers75Changingmirrorrela
13、tionshipschedules75Manuallyupdatingdataprotectionmirrorcopiesondestinationvolumes.76Deletingamirrorcopy77Reversingthedataprotectionmirrorrelationshipwhendisasteroccurs78ConvertingadataprotectionmirrordestinationtoaWriteabIevolume83Testingdatabaseapplications83ProtectingdataonFIexVoIvolumesbyusingbac
14、kupvaults85CreatingbackupvaultsonFlexVolvolumes85GuidelinesforcreatingvaultrelationshipsonFlexVolvolumes85Backupvaultupdatesfailifdestinationaggregateisfull87Prepopulatedbackupvaultdestinationscenarios87CreatingabackupvaultinanemptyFlexVolvolume88Creatingthebackupvaultrelationshipofamirror-vaultcasc
15、ade91PreservingaSnapshotcopyontheprimarysourcevolume92CreatingabackupvaultinaprepopulatedFlexVolvolume93Creatingadestinationbaselineusingatapebackup95Convertingadataprotectiondestinationtoabackupvaultdestination96Managingbackupandrestoreoperationsforbackupvaults97BackingupfromaSnapshotcopythatisolde
16、rthanthebaseSnapshotcopy97BackingupFlexVolvolumesthatcontainthemaximumlimitofSnapshotcopies100Managingthebackupofacopiedsourcevolume100Guidelinesforrestoringtheactivefilesystem101GuidelinesforrestoringLUNsinSANenvironments101Howarestoreoperationfromabackupvaultworks102Restoringavolumefromabackupvaul
17、t102Managingavault-mirrorcascadewhenthebackupvaultisunavailable.103Managingstorageefficiencyforvaultdestinations106Guidelinesformanagingstorageefficiencyforbackupvaults107Enablingstorageefficiencyonavaultdestinationvolume108ProvidingdisasterrecoveryonInfiniteVolumesusingmirroringtechnology109Aggrega
18、terequirementsforInfiniteVolumesinadataprotectionmirrorrelationship109ConstituentsizerequirementsforsettingupdataprotectionmirrorrelationshipsforInfiniteVolumes110CreatingadataprotectionmirrorcopyforanInfiniteVolumewithdedicatedaggregates110IdentifyingthesizeofasourceInfiniteVolumeandaggregatedetail
19、s111Creatingdedicatedaggregatesforadestinationcluster(clusteradministratorsonly)113CreatingaVserverwithInfiniteVolumeinadestinationcluster(clusteradministratorsonly)114AssigningaggregatesforallVserversinacluster(clusteradministratorsonly)115CreatingclusterandVse,erpeerrelationships(clusteradministra
20、torsonly)116CreatingadestinationInfiniteVolume116Creatingandinitializingadataprotectionmirrorrelationship117CreatingadataprotectionmirrorcopyforanInfiniteVolumewithsharedaggregates120IdentifyingthesizeofasourceInfiniteVolumeandconstituentdetails.121Verifyingaggregatespaceinadestinationcluster(cluste
21、radministratorsonly)122CreatingaVservcrwithInfiniteVolumeinadestinationcluster(clusteradministratorsonly)124CreatingclusterandVsen,erpeerrelationships(clusteradministratorsonly)125CreatingadestinationInfiniteVolume126Creatingandinitializingadataprotectionmirrorrelationship126ViewinginformationaboutI
22、nfiniteVolumes129WheninformationisavailableaboutadestinationInfiniteVolume129ViewingconstituentsinanInfiniteVolume130ManagingmirrorrelationshipsforInfiniteVolumes131CommandsformanagingSnapMirrorrelationships131HowcommandsarerunonInfiniteVolumes134ManagingdisasterrecoveryforInfiniteVolumes135Howthesn
23、apmirrorresynccommandworksforInfiniteVolumesandconstituents135RetrievingdatafromInfiniteVolumesduringdisasterrecovery135CreatinganamespacemirrorconstituentonadestinationInfiniteVolume138Recoveringindividualfailedconstituents139ExpandingInfiniteVolumesindataprotectionmirrorrelationships140Addingdisks
24、tosourceanddestinationInfiniteVolumes(clusteradministratorsonly)140AddingdedicatedaggregatestothesourceanddestinationInfiniteVolumes(clusteradministratorsonly)141AddingsharedaggregatestothesourceanddestinationInfiniteVolumes(clusteradministratorsonly)142IncreasingthesizeofsourceanddestinationInfinit
25、eVolumes143RcenablingSnapDiffafterexpandingadestinationInfiniteVolumeontonewnodes145HownamespacemirrorconstituentsaffectsourceanddestinationInfiniteVolumes146Whatanamespacemirrorconstituentis146Whennamespacemirrorconstituentsarecreated146HowmodifyinganInfiniteVolumeaffectsnamespacemirrorconstituents
26、147HownamespacemirrorconstituentsaffectthestateofanInfiniteVolume148HowDataONTAPcalculatestheInfiniteVolumesizebeforethetransferofamirrorcopy149HowDataONTAPselectsaggregatesfordataprotectionofInfiniteVolumes.150WhenDataONTAPselectsaggregatesfordestinationInfiniteVolumes.150HowDataONTAPautomaticallys
27、electsaggregatesfordestinationInfiniteVolumes151ExamplesofautomaticaggregateselectionfordestinationInfiniteVolumes155Howdataprotectionmirrorupdatesaffectaggregateselection157ErrormessagesandsolutionsforfailedaggregateselectionfordestinationInfiniteVolumes157InsufficientspaceondestinationforSnapMirro
28、rsourceInfiniteVolumenamespaceconstituent158Sizeexceedsmaximum(namespaceconstituent)158InsufficientspaceforthefollowingsourcedataconstituentsondestinationVserver159InsufficientspaceonSnapMirrordestinationforsourceInfiniteVolumedataconstituents159Sizeexceedsmaximum(dataconstituents)159Providingdisast
29、errecoveryonInfiniteVolumeswithstorageclassesusingmirroringtechnology161Whatastorageclassis161HowstorageclassesaffectdataprotectionmirrorrelationshipsforInfiniteVolumes161HowstorageclassesaffectwhichaggregatescanbeassociatedwithInfiniteVolumes162TasksandtoolsformanagingdataprotectionmirrorcopiesforI
30、nfiniteVolumeswithstorageclasses162CreatingadataprotectionmirrorcopyforanInfiniteVolumewithstorageclasses163ExportingadatapolicytoadestinationVserverwithInfiniteVolume164RetrievingdatafromInfiniteVolumeswithstorageclassesduringdisasterrecovery164IncreasingthesizeofsourceanddestinationInfiniteVolumes
31、withstorageclasses165ProcessesusedtoselectaggregatesfordestinationInfiniteVolumeswithandwithoutstorageclasses165Copyrightinformation166Trademarkinformation167Howtosendyourcomments168Index169IntrOdUCtiOntodataPrOteCtiOnDataprotectionmeansbackingupdataandbeingabletorecoverit.Youprotectthedatabymakingc
32、opiesofitsothatitisavailableforrestorationeveniftheoriginalisnolongeravailable.Businessesneeddatabackupandprotectionforthefollowingreasons:,Toprotectdatafromaccidentallydeletedfiles,applicationcrashes,datacorruption,andviruses,ToarchivedataforfutureuseTorecoverfromadisasterMethodsofprotectingdataDep
33、endingonyourdataprotectionandbackupneeds,DataONTAPoffersavarietyoffeaturesandmethodsthatenableyoutoprotectdataagainstaccidental,malicious,ordisaster-inducedlossofdata.SnapshotEnableyoutomanuallyorautomaticallycreate,schedule,andmaintainmultiplecopiesbackups(alsocalledSnapshotcopies)ofdataonavolume.S
34、napshotcopiesuseonlyaminimalamountofadditionalvolumespace,anddonothaveaperformancecost.IfauseraccidentallymodifiesordeletescrucialdataonavolumewithSnapshottechnologyenabled,thatdatacanbeeasilyandquicklyrestoredfromoneofthelatestSnapshotcopiescreated.YoucanalsocreateclonesofFlexVolvolumesusingSnapsho
35、tcopies.ThismethodisvalidforFlexVolvolumesandInfiniteVolumes.SnapRestore (license required)Data protection mirror copies (SnapMirror license required)Enablesyoutoperformfast,space-efficient,on-requestSnapshotrecoveryfromSnapshotcopiesonanentirevolume.ThismethodisvalidforFlexVolvolumesandInfiniteVolu
36、mes.Provideasynchronousdisasterrecovery.DataprotectionmirrorrelationshipsenableyoutoperiodicallycreateSnapshotcopiesofdataononevolume;copythoseSnapshotcopiestoapartnervolume(thedestinationvolume),usuallyonanothercluster;andretainthoseSnapshotcopies.Themirrorcopyonthedestinationvolumeensuresquickavai
37、labilityandrestorationofdatafromthetimeofthelatestSnapshotcopy,ifthedataonthesourcevolumeiscorruptedorlost.Ifyouconducttapebackupandarchivaloperations,youcanperformthemonthedatathatisalreadybackeduponthedestinationvolume.ThismethodisvalidforFlexVolvolumesandInfiniteVolumes.Backupvaults(SnapVauItlice
38、nserequired)Providestorage-efficientandlong-termretentionofbackups.BackupvaultrelationshipsenableyoutobackupselectedSnapshotcopiesofvolumestoadestinationvolumeandretainthebackups.Ifyouconducttapebackupandarchivaloperations,youcanperformthemonthedatathatisalreadybackeduponthedestinationvaultvolume.Th
39、ismethodisvalidonlyforFlexVolvolumes.volumecopyEnablesyoutoperformfastblock-copyofdatafromonevolumetoanother.ThismethodisvalidonlyforFlexVoIvolumes.nvfailOptiontthevolumemodifycommandProvidesprotectionagainstdatacorruptionbyfailuresofnonvolatileRAM(NVRAM).ThismethodisvalidforFlexVolvolumesandInfinit
40、eVolumes.DatabaseprotectionIfNVRAMproblemsoccurthatcompromisedatabasevalidity,DataONTAPcanwarnyouandautomaticallyrenamethedatabasesothatitdoesnotrestartautomatically.Youcanthenensurethatthedatabaseisvalidbeforerestartingit.DataONTAPprovidesdatabaseprotectionusingthenvfailoptionofthevolumecreateorvol
41、umemodifycommand.ForvaultrelationshipsinSANenvironments,thenvfailattributeoftheLUNonavaultdestinationisalwaysoffForInfiniteVolumes,itisrecommendedtoleavethenvfailoptiondisabled.Note:Youcanusethisfeatureonlywhentherearedatabasesonthestoragesystem.WhatadatalossdisasterisAdatalossdisasterisasituationin
42、whichservicefromonephysicalsite(forexample,abuildingoracorporatecampus)onthenetworkislostforanextendedperiodoftime.Thefollowingareexamplesofdisasters:FireEarthquakeProlongedpoweroutagesatasiteProlongedlossofconnectivityfromclientstothestoragesystematasiteWhenadisasteroccurs,itcanaffectallthecomputin
43、ginfrastructureincludingstoragesystems,applicationservers,networkingconnectivity,andclientconnectivity.Whenyoucreateadisasterplan,youshouldtakeyourcomputinginfrastructureintoconsideration.Toolsforprotectingagainstdata-lossdisastersDataONTAPprovidestoolsthatenableyoutobackuporreplicatedatastoredatapr
44、imarydatastoragesitetoanoff-sitenetworklocation.Thisensuresthatyoucanrestoredataifdatalossiscausedbydisasterataprimarydatastoragesite.BackupvaultforFIexVoIvolumesSnapVaultisaSnapshotcopybackupandrestorabilitytoolonFlexVolvolumes.Youcanlocateabackupvaultdestinationonthesameclusteroronadifferentcluste
45、r.DatarecoverabilityIfadata-lossdisasteroccursatasourcevolume,youcanrestoredatathatisbackeduptoabackupvaultdestinationvolume.Youcanrestorethedatatothesourcevolumeafteritisrunningagain,oryoucanrestoredatatoanalternatevolume.CurrencyofrestoreYoUcanrestoredatafromanySnapshotcopythatwasreplicatedtotheda
46、tadestinationsystem.AdvantageAbackupvaultprovidesinexpensivebackupsolution.DataprotectionmirrorcopyAdataprotectionmirrorcopyisaSnapshotcopyreplication,availability,andrestorabilitytool.Youcanlocateadataprotectionmirrordestinationonthesameclusteroronadifferentcluster.Data availabilityData recoverabil
47、ityCurrency of restore dataAdvantageIfasourcesiteexperiencesadata-lossdisaster,youcanquicklymakeavailabledataatthedataprotectionmirrorcopydestinationsite.Ifadata-lossdisasteroccursatasourcestoragesite,youcanrestoredatafromadataprotectionmirrorcopydestinationvolume.Youcanrestorethedatatothesourcevolumeafteritisrunningagain,oryoucanrestoredatatoanalternatevolume.YoucanrestoredatafromthelastSnapshotcopythatwa
