Planning your backup strategy | HP B6960-96035 specification

132	Planning your backup strategy

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HP B6960-96035 manual Planning your backup strategy

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HP Data Protector A.06.10 Concepts guide Page Contents Planning your backup strategy Types of incremental backups Media management and devices 133 Users and user groups 183 Service management 205 Data Protector internal database 187 How Data Protector operates 219 Integration with database applications 237 Direct backup 243 Disk backup 253Synthetic backup 257 This chapter 265 Overview Supported configurations 269 Microsoft Volume Shadow Copy service 289 Backup scenarios 297Snapshot concepts 275 Further information 331 Glossary 345 Index 403 Figures 149 Backup session information flow multiple sessions Page Page Tables Page Page Publication history Edition historyPart number Guide edition Product Publication history About this guide Intended audienceDocumentation set Guides HP Data Protector installation and licensing guide HP Data Protector troubleshooting guideHP Data Protector disaster recovery guide HP Data Protector integration guides HP Data Protector zero downtime backup concepts guide HP Data Protector zero downtime backup administrators guideHP Data Protector zero downtime backup integration guide HP Data Protector integration guide for HP Reporter HP Data Protector command line interface reference Online HelpHP Data Protector Media Operations users guide This guide fulfills a similar function for Media Operations Documentation map AbbreviationsGuide Map Abbreviation Guide Integrations Integration Guide Document conventions and symbols Document conventionsConvention Element Data Protector graphical user interface Provides additional informationProvides helpful hints and shortcuts General information HP technical support Data Protector graphical user interface Subscription service HP websitesDocumentation feedback For additional information, see the following HP websites About backup and Data Protector This chapterAbout Data Protector High Availability Support Page Introducing backups and restores What is a backup?This section explains basic backup and restore concepts What is a restore? Backing up a network environment Direct backup Data Protector architecture Data Protector cell physical view and logical view Cell Manager Systems with backup devices Installation ServerOperations in the cell Systems to be backed up Backup sessions What is a backup session?How does it work? Restore sessions What is a restore session? What is an enterprise environment? When to use an enterprise environmentEnterprise environments Splitting an environment into multiple cells Why split large environments into multiple cells? MoM Manager-of-Managers environment What is a media pool? Media managementMedia management functionality Backup devices User interfaces Data Protector GUIPage Data Protector Java GUI Original Data Protector GUI Data Protector Java GUI architecture Benefits of Java GUI Differences from the Original Data Protector GUI Overview of tasks to set up Data Protector Install and configure your Data Protector environment Planning your backup strategy Disaster recovery onClustering on Restoring data on Backup strategy planning Defining the requirements of a backup strategyWhat is backup strategy planning? Page Factors influencing your backup strategy Preparing a backup strategy planPage Planning cells One cell or multiple cells?Page Installing and maintaining client systems Installation Servers and the Cell ManagerCreating cells in the Unix environment Creating cells in the Windows environment Windows domainsMapping a Data Protector cell into a Windows domain Creating cells in a mixed environment Geographically remote cellsWindows workgroups Considerations for geographically remote cells Network versus local backups Understanding and planning performanceInfrastructure MoM environment Network or server versus direct backups DevicesDevice performance Advanced high performance configuration Using hardware in parallelWhen to use parallelism High performance hardware other than devices Configuring backups and restores Software compressionHardware compression Full and incremental backups Disk image versus filesystem backupsObject distribution to media Disk image backups Disk performanceDisk fragmentation Compression What is security? Planning securitySAN performance Online database application performance Cells Data Protector users accounts Data Protector user groups Data Protector user rights Visibility of backed up data Data encryptionHow Data Protector AES 256-bit encryption works Hiding data from other users Backup session with AES 256-bit encryption How Data Protector drive-based encryption works What is backup ownership? Restore from encrypted backupsWho owns a backup session? Backup ownership and restore What is a cluster?Clustering Cluster concepts Cluster nodes Shared disksCluster network What is a package or group? What is a virtual server?What is a failover? Automatic restart of backups Cluster supportHigh availability of the Data Protector Cell Manager Load balancing at failover Cell Manager installed outside a cluster This section gives three example cluster configurationsExample cluster environments Cell Manager installed outside a cluster Virtual server backup Backup behavior ConditionResult Virtual server backup Condition Result FC/SCSI MUX Virtual server backup Failover before a backup starts Full and incremental backups Comparison of full and incremental backupIncremental backup Full backups Incremental backupsSynthetic backup Full backup Incremental backup Conventional incremental backup Enhanced incremental backupTypes of incremental backups Level that is still protected. For example, an Incr1 backup Backup saves all changes since the last Incr4 backup. AnIncr1-9 backup never references an existing Incr backup Incremental backups Relative referencing of backup runs Considering restore How to read onExamples TIP Media needed to restore from leveled incremental backups What is data protection? Keeping backed up data and information about the dataData protection Data Protector Internal Database Browsing files for restore What is catalog protection?What is logging level? Catalog protection Enabling the browsing of files and quick restore Enabling the restore of files, but not browsingOverwriting backed up files with new data Backing up data Exporting media from a cell Creating a backup specification Selecting backup objectsWhat is a backup specification? How to create a backup specification Examples of backup options Backup types and scheduled backups What is an object mirror?What is a media set? Object mirrors Scheduling, backup configurations, and sessions Backup configurationBackup session Optimizing backup performance When to schedule backups Staggering full backupsOptimizing for restore Staggered approach Full backup with daily simple incremental backups Example Full backup with daily level 1 incremental backups Considerations for unattended backups Automated or unattended operationPage Duplicating backed up data Data Protector data duplication methodsObject copy Object mirror Media copy Smart Media Copy What is object copy? Copying objects Post-backup object copying Start of object copy sessionScheduled object copying Selection of devices Selection of the media set to copy fromObject copy session performance Why use object copy? VaultingFreeing media Freeing media Demultiplexing of media Consolidating a restore chain Migration to another media typeDisk staging What is object mirroring? Object mirroring Benefits of object mirroring Object mirror operation Backup performance Object mirroring What is media copying? How to copy mediaWhat is the result? Copying media What is automated media copying? Post-backup media copyingAutomated media copying Scheduled media copying Smart media copying using VLS What is smart media copying?What happens after the backup? Automated smart media copying Restore duration Factors affecting restore durationRestoring data Selection of restore chain Selection of the media setSelection of devices Media set selection algorithm Operators are allowed to restore When to use this policyWhat needs to be done Disaster recovery End users are allowed to restorePage Disaster recovery methods Alternative disaster recovery methods Recovery methods supported by operating system vendorsRecovery using third-party tools for Windows 132 Planning your backup strategy Media management and devices Media management on Media life cycle onMedia pools on Devices on Media life cycle Typical media life cycle consists of the following steps Media pools See Calculating media condition onConcepts guide 135 How to use media pools Media pool property examplesMedia pools and dcbf directories Default media pools Free pools What is a free pool? When is a free pool used?Free pool benefits Free pool properties Media quality calculationFree pool limitations Media pool usage examples Simple one device/one media pool relation Configuration of media pools for large libraries Multiple devices, single media pool What is a media rotation policy? Implementing a media rotation policy Media rotation and Data Protector Media needed for rotationAutomatic media rotation and media handling Estimating the quantity of needed media Media management before backups begin What is initializing formatting media?Initializing or formatting media Labeling Data Protector media Location field How are labels used? Media management during backup sessions Selecting media for backups Adding data to media during backup sessions Media conditionMedia usage policy Distributing objects over media Multiple objects and sessions per medium, sequential writes Writing data to several media sets during backup Calculating media conditionMedia condition factors Media management after backup sessions What is vaulting?Vaulting Implementing vaulting Vaulting usage example Using devices with Data Protector DevicesRestoring from media in a vault Concepts guide 153 Library management console support TapeAlert Device lists and load balancing What is device streaming? How to configure device streamingDevice streaming and concurrency How load balancing works Segment size Disk agent concurrencyIncreased performance Multiple data streams Block size Data format Number of disk agent buffers Device locking and lock namesDevice names Standalone devices Physical device collisionPreventing collision What are standalone devices? Small magazine devices Configuring a library Large librariesHandling of media Size of a library Sharing a library with other applications Enter / eject mail slotsBarcode support Advantages of barcodes Cleaning tape support What is library sharing?Sharing a library with multiple systems Connecting drives to multiple systems Control protocols and Data Protector Media Agents Drive control Required Data Protector Media Agent for drive controlDrive control protocol Ndmp Scsi Exemplary configurations Required Data Protector Media Agent for robotic controlADIC/GRAU Scsi Ndmp ACS 168 Media management and devices Sharing a Scsi library robotics attached to an Ndmp Server Data Protector and Storage Area Networks Sharing an ADIC/GRAU or StorageTek ACS library Storage Area Networks Fibre Channel Storage Area Network Point-to-point topology Loop topology Switched topology Loop initialization protocol Configuring multiple paths to physical devices Device sharing in SANConcepts guide 175 Why use multiple paths Path selection Device locking Backward compatibilityDevice locking with multiple applications Device locking within Data Protector Indirect and Direct Library Access Indirect Library Access Direct Library Access Indirect Library Access Device sharing in clusters Static drives Floating drives Concepts guide 181 182 Media management and devices Access to backed up data Users and user groupsIncreased security for Data Protector users Visibility of backed up data Default administrators Users and user groupsPredefined user groups Using predefined user groups Following default groups are provided by Data ProtectorUser group Access rights Data Protector predefined user groups 186 Users and user groups Data Protector internal database About the IDB IDB on the Windows Cell Manager IDB size and growth considerationIDB location IDB format IDB architecture IDB on the Unix Cell ManagerIDB in the Manager-of-Managers environment Media Management Database Mmdb Underlying technologyMmdb records Catalog Database CDB Mmdb size and growthMmdb location CDB records Detail Catalog Binary Files Dcbf Size and growth for CDB objects and positionsCDB location Dcbf information Session Messages Binary Files Smbf Dcbf locationSmbf records Smbf size and growth During backup IDB operationServerless Integrations Binary Files Sibf During restore During object copying or object consolidationExporting media IDB configuration Overview of IDB managementRemoving the detail catalog Filenames purge IDB maintenance IDB recoveryIDB growth and performance Key IDB growth and performance factors IDB growth and performance key tunable parameters Logging level as an IDB key tunable parameter Concepts guide 199 Logging level and browsing for restore Logging level and restore speedImpact on performance Catalog protection and restore Catalog protection as an IDB key tunable parameterRecommended usage of logging level and catalog protection Expired catalog protection Use different logging levels in the same cell Different logging levels for object copiesSpecifics for small cells IDB size estimation Specifics for large cellsOn the Windows Cell Manager 204 Service management OverviewIt is organized as follows Overview on Data Protector and service management Native Data Protector functionality Key functionsConcepts guide 207 What Is ARM? Application Response Measurement version 2.0 ARM 2.0 API ARM functionality Integration with HP Operations Manager software Snmp trapsMonitor Functionality of the Data Protector OM integration Reporting and notification Event logging and notification Reporting and notification examples Windows application log Java-based online reportingData Protector log files Data Protector checking and maintenance mechanism Using the data provided by Data ProtectorCentral management, distributed environment What can I do with the data? Service management integrations Backup Session Reports Concepts guide 215Data Protector OM-R integration Data Protector Reporter example Operational error status report Data Protector OM SIP Direct SIP integration example Data Protector processes or services How Data Protector operatesSystems, the system inet daemon Inetd starts the Data Protector Inet process Backup sessions CRSMMD RDS Scheduled and interactive backup sessions Backup session data flow and processesScheduled backup session Interactive backup session Backup session information flow How many sessions can run concurrently? Pre-exec and post-exec commands On page 223 shows multiple sessions running concurrently Queuing of backup sessions Mount requests in backup sessions Restore sessions Backing up with disk discovery Restore session data flow and processes What happens in a restore session? Queuing of restore sessions How many restore sessions can run concurrently? Mount requests in a restore session Parallel restoresWhat is a parallel restore? How does it compare to a standard restore? Fast multiple single file restore Object copy sessions Automated and interactive object copy sessions Object copy session data flow and processes How many sessions can run concurrently? Queuing of object copy sessions Mount requests in an object copy session Object consolidation sessions Automated and interactive object consolidation sessionsObject consolidation session data flow and processes Queuing of object consolidation sessions Media management sessions Mount requests in an object consolidation sessionMedia management session data flow How many sessions can run? Integration with database applications Overview of database operation Relational database Filesystem backup of databases and applications Online backup of databases and applications Data Protector integration with databases Concepts guide 241 242 Direct backup Requirements and support on Supported configurations on Configurations on How direct backup works Direct backup benefitsBackup types Direct backup architecture Environment About resolve About XCopy Direct backup process flow Backup stages for data filesXCopy + Resolve Restore There are two restore options when using direct backupRequirements and support Supported configurations Three hosts CM, application, Resolve Basic configuration single host Two Hosts Cell Manager/Resolve Agent and applicationConcepts guide 251 252 Disk backup Disk backup benefits on Data Protector disk-based devices on Disk backup benefits Data Protector disk-based devices Standalone file deviceFile jukebox device File library device Recommended disk-backup device ConfigurationData format Backing up to a disk device Synthetic backup Concepts guide 257 Synthetic backup benefits How Data Protector synthetic backup worksSynthetic backup brings the following benefits Synthetic backup Restore and synthetic backup Synthetic backup and media space consumption Full and incremental backups Regular synthetic backup Page 264 Split mirror concepts Split mirror backup concept Instant recovery Backup clients and clusters ZDB to tape and ZDB to disk+tapeZDB to disk Replica set rotation Local mirror dual host Concepts guide 269 Local mirror single host Remote mirror Split mirror remote mirror LAN-free remote backup data HA Concepts guide 271 Local/remote mirror combination Other configurations 274 Split mirror concepts Snapshot concepts Storage virtualization Snapshot concepts RAID Snapshot backup Snapshot backup types Instant recovery Replica set and replica set rotationTypes of snapshots Snapshots with the preallocation of disk space Snapshots without the preallocation of disk space Snapclones Basic configuration single disk array dual host Other supported configurations Multiple disk arrays dual host Multiple application hosts single backup host Disk arrays single host LVM mirroring HP StorageWorks Virtual Array only 286 Page 288 Microsoft Volume Shadow Copy service What is a shadow copy? What is a writer?What is a shadow copy provider? Data Protector and VSS Actors of the traditional backup model Data Protector Volume Shadow Copy integration Benefits of using VSSVSS benefits VSS backup VSS restore VSS filesystem backup and restore Backup and restore Backup scenarios This appendixConsiderations 298 Company XYZ EnvironmentHardware and software environment of XYZ Current XYZ backup topology Problems with the current solution Backup strategy requirements Requirements Proposed solution Solution overviewProposed environment Department Current Data Projected Data Devices 5 Years Proposed solution in detail Proposed XYZ backup topology Estimating the size of the IDB Input parameters Page Staggering approach Remote full backups to the HP DLT 4115 library Department Current Data/Backup TimeTime ENG1BS ENG2BS OthbsAdmbs Dbbs Restore options 312 Backup scenarios Size of backup environment Company ABC#UX Current ABC Cape Town backup topology Problems with current solution Maximum acceptable downtime for recoveryType of data Maximum downtime Concepts guide 315 How long data should be kept Type of data Max data storage timeAmount of data to be backed up Location Amount of data to be backed up in five years ABC enterprise environment Why configure into seven cells? Why use the CMMDB?ABC cell configuration #UNIX Why choose the Windows system? ABC Cape Town enterprise backup environment 322 Why use the HP StorageWorks DLT 4228w Library? Why use the HP StorageWorks DLT 4115w Library? Why use the HP StorageWorks DAT24 Autoloader?How long does a full backup last? ABC’s Media Pool Usage Media pool name Location DescriptionConcepts guide 325 Why use differential incr1 backups? Staggering Approach for ABC Cape Town ABC’s backup specification configuration Name Cell Description Backup day TimeSERVERSA...G USERSD...G Backup options Page 330 Backup generations What is a backup generation?Further information Backup generations Examples of automated media copying Example 1 automated media copying of filesystem backups Incr1 backupConfiguring backups Configuring automated media copying Full backup Concepts guide 335 336 Full backup and automated media copying Example 2 automated media copying of Oracle database backups Full database backup and automated media copying Internationalization Localization File name handling Background File name handling during backup File name handling during restoreBrowsing file names Unix incompatibility examplePage 344 Glossary AcslsAML See also online redo log Lotus Domino Server specific term Lotus Domino ServerSee library See restore chain See also Virtual Library System VLS and virtual tapeBackint See also backup specification, incremental backup, and full Backup Backup types Backup viewBackups/templates. Default view By Group according to the group to which backup Or development. When used for backup purposes, the original Or BCV devices, are dedicated SLDs that are pre-configuredManual and disaster and recovery SAP R/3 specific term An SAP R/3 backup tool that allows Restore files of the following type Saved with BrbackupNon-database files saved with Brbackup You can specify files, tablespaces, complete backups, log CAP CDBSee also Mmdb See also MoM See also backup to IAP Microsoft Exchange Server and Lotus Domino Server specific See also Exchange Replication Service and local continuous Microsoft Exchange Server specific term Cluster continuousReplication Informix Server specific term a Windows CMD script that is HP StorageWorks EVA specific term The user interface that CV EVAVLS Oracle and SAP R/3 specific term An Oracle data file that CSM Oracle and SAP R/3 specific term a physical file created byHP StorageWorks EVA specific term a logical grouping See also backup types See also copy setInformix Server specific term An Informix Server physical Dcbf See also incremental backup Microsoft SQL Server specific term a database backup thatSee also XCopy engine Veritas Volume Manager specific term The basic unit of data See also virtual full backup DMZDR OS See client backup with disk discovery See Symmetrix Agent SymaEMC Symmetrix Specific term Microsoft Exchange Server specific term The Microsoft See also librarySee also importing media See also CA+BC EVA Backup media Volume and each of these copies can have additional twoBi-directional transmission of large data files and can be Allows any server to perform replication activity Flash recovery Run out of media. The media pools must be configured to useFull backup Backup Full ZDB GUI HSM Ldev ReplicaEVA provider SMI-S EVA Microsoft Exchange Server specific term a backup IcdaEMC Symmetrix specific term EMCs Symmetrix Integrated IDB Incremental restore BCV control operations, an incremental restore reassigns aPair. However, the standard devices are updated with Devices are updated with only the data that was written to See also replica, zero downtime backup ZDB, ZDB to disk See formattingZDB to disk+tape See also Information Store and Site Replication Service IsqlKMS LBO LISTENER.ORA Microsoft Exchange Server specific term Local continuous Service Oracle and SAP R/3 specific term The format of the login Microsoft SQL Server specific term The name a user uses toLVM See Wake Onlan Microsoft Exchange Server specific term a part MCUCA HP StorageWorks Disk Array XP specific term, and HP See MoM During a restore session, a Media Agent locates data on Robotics control of a libraryMedia allocation Or off-site storage See also overwrite Symmetrix and HP StorageWorks Disk Array XP specific TermStorageWorks Disk Array XP specific Term Mmdb See also CMMDB, CDBMSM HP StorageWorks Disk Array XP specific term Mirror Unit See backup object See also zero downtime backup ZDB and online backup OnconfigSee archived redo log Informix Server specific term An environment variable that See also zero downtime backup ZDB, and offline backup See also archived redo logOraclesid See also merging See also pre-exec See also post-exec HP StorageWorks Disk Array XP specific term Standard HPMicrosoft Exchange Server specific term The part HP StorageWorks Disk Array XP specific term The RAID RCU RdbmsRDF1/RDF2 EMC Symmetrix specific term a type of Srdf device group Rman HP StorageWorks Disk Array XP specific term The Remote HP StorageWorks Disk Array XP VSS provider specific term Rman OracleRSM See backup session,media management session, and restore HP StorageWorks Disk Array XP specific term secondarySession Microsoft VSS specific term a volume that represents a Microsoft VSS specific term a collection of shadow copiesSibf SMB SmbfHP StorageWorks VA and HP StorageWorks EVA Specific term See also snapshot HP StorageWorks Disk Array XP Specific term See also ZDB to tape, ZDB to disk+tape, and replica SrdfEMC Symmetrix specific term The EMC Symmetrix Remote See failover EMC Symmetrix specific term The Data Protector softwareSyma Any number of incremental backups Checkpoints and the quorum resource recovery log, whichPutting stress on the production servers or the network. a Synthetic full Disaster recovery specific term a system after a computer See ZDB to diskZDB specific term See also source R1 device Oracle and SAP R/3 specific term a network configuration See also Microsoft Volume Shadow Copy Service VSSTNSNAMES.ORA Data Protector specific term Keep track of IDB changes. See lights-out operation See also Command View CV EVA See also source volume and target volumeMicrosoft SQL Server specific term This is a SQL Server Adic and STK specific term a VOLume SERial number is a See Microsoft Volume Shadow Copy ServiceVSS Replica, secondary volume S-VOL, and replica set rotation Configuration Informix Server specific term ON-Bar and Data Protector ZDB Arrays, split mirror restore can also be used See also zero downtime backup ZDB, ZDB to disk, instantRecovery, ZDB to disk+tape, and replica Recovery 402Glossary Index 404 Page Concepts Snapshot backup, 276 split mirror backup Hardware, 68, 70 software CRS 408 Selecting for restore Direct BackupSupported configurations 324 410 Failover, 81, 82 FC-AL 412 See IDB Internationalization, 340 IT management See also librariesSize 414 Media pools, 135, 309, 325 default, 136 properties Loose, 147 strictMedia condition, 150 calculating, 150 fair Good 416 RDS Restores, 125 SANData, 194 location Backup, 43 Sharing libraries, 47, 162, 163, 164 Sibf data Snmp RAID HP, 33 technical support 422