Freeing media, Demultiplexing of media | HP B6960-96035 specification

Figure 32 Freeing media

Demultiplexing of media

Multiplexed media contain interleaved data of multiple objects. Such media may arise from backup sessions with the device concurrency more than 1. Multiplexed media may compromise the privacy of backups and require more time for restore.

Data Protector offers a possibility of demultiplexing of media. Objects from a multiplexed medium are copied to several media that you specify. See Figure 33 on page 118.

Concepts guide

117

Image 117

HP B6960-96035 manual Freeing media, Demultiplexing of media

Contents

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 Data Protector internal database 187 Service management 205 Integration with database applications 237 How Data Protector operates 219 Disk backup 253 Direct backup 243Synthetic backup 257 This chapter 265 Overview Supported configurations 269 Backup scenarios 297 Microsoft Volume Shadow Copy service 289Snapshot 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 Intended audience About this guideDocumentation set Guides HP Data Protector troubleshooting guide HP Data Protector installation and licensing guideHP Data Protector disaster recovery guide HP Data Protector integration guides HP Data Protector zero downtime backup administrators guide HP Data Protector zero downtime backup concepts guideHP Data Protector zero downtime backup integration guide HP Data Protector integration guide for HP Reporter Online Help HP Data Protector command line interface referenceHP Data Protector Media Operations users guide This guide fulfills a similar function for Media Operations Documentation map AbbreviationsGuide Abbreviation Guide Map Integrations Integration Guide Document conventions and symbols Document conventionsConvention Element Data Protector graphical user interface Provides additional informationProvides helpful hints and shortcuts Data Protector graphical user interface General information HP technical support HP websites Subscription serviceDocumentation 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 Backing up a network environment What is a restore? Data Protector architecture Direct backup Cell Manager Data Protector cell physical view and logical view Installation Server Systems with backup devicesOperations in the cell Systems to be backed up Backup sessions What is a backup session?How does it work? What is a restore session? Restore sessions When to use an enterprise environment What is an enterprise environment?Enterprise environments Splitting an environment into multiple cells MoM Why split large environments into multiple cells? Manager-of-Managers environment What is a media pool? Media managementMedia management functionality Backup devices Data Protector GUI User interfacesPage Original Data Protector GUI Data Protector Java GUI Data Protector Java GUI architecture Differences from the Original Data Protector GUI Benefits of Java GUI Overview of tasks to set up Data Protector Install and configure your Data Protector environment Disaster recovery on Planning your backup strategyClustering on Restoring data on Backup strategy planning Defining the requirements of a backup strategyWhat is backup strategy planning? Page Preparing a backup strategy plan Factors influencing your backup strategyPage One cell or multiple cells? Planning cellsPage 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 Geographically remote cells Creating cells in a mixed environmentWindows workgroups Considerations for geographically remote cells Understanding and planning performance Network versus local backupsInfrastructure MoM environment Network or server versus direct backups DevicesDevice performance Using hardware in parallel Advanced high performance configurationWhen 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 performance Disk image backupsDisk fragmentation Compression Planning security What is security?SAN performance Online database application performance Data Protector users accounts Cells Data Protector user rights Data Protector user groups Data encryption Visibility of backed up dataHow Data Protector AES 256-bit encryption works Hiding data from other users How Data Protector drive-based encryption works Backup session with AES 256-bit encryption What is backup ownership? Restore from encrypted backupsWho owns a backup session? What is a cluster? Backup ownership and restoreClustering Cluster concepts Cluster nodes Shared disksCluster network What is a package or group? What is a virtual server?What is a failover? Cluster support Automatic restart of backupsHigh 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 Virtual server backup Cell Manager installed outside a cluster 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 Incremental backups Full 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 Relative referencing of backup runs Incremental backups Considering restore How to read onExamples TIP Media needed to restore from leveled incremental backups Keeping backed up data and information about the data What is data protection?Data protection Data Protector Internal Database What is catalog protection? Browsing files for restoreWhat 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 Exporting media from a cell Backing up data Selecting backup objects Creating a backup specificationWhat is a backup specification? How to create a backup specification Examples of backup options What is an object mirror? Backup types and scheduled backupsWhat is a media set? Object mirrors Backup configuration Scheduling, backup configurations, and sessionsBackup session Optimizing backup performance Staggering full backups When to schedule backupsOptimizing for restore Staggered approach Example Full backup with daily simple incremental backups Full backup with daily level 1 incremental backups Automated or unattended operation Considerations for unattended backupsPage Duplicating backed up data Data Protector data duplication methodsObject copy Object mirror Media copy Smart Media Copy Copying objects What is object copy? 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 Demultiplexing of media Freeing media Consolidating a restore chain Migration to another media typeDisk staging Object mirroring What is object mirroring? Object mirror operation Benefits of object mirroring Object mirroring Backup performance How to copy media What is media copying?What is the result? Copying media Post-backup media copying What is automated media copying?Automated media copying Scheduled media copying What is smart media copying? Smart media copying using VLSWhat happens after the backup? Automated smart media copying Restore duration Factors affecting restore durationRestoring data Selection of the media set Selection of restore chainSelection of devices Media set selection algorithm Operators are allowed to restore When to use this policyWhat needs to be done End users are allowed to restore Disaster recoveryPage 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 on Media life cycle on Media management and devicesMedia pools on Devices on Typical media life cycle consists of the following steps Media life cycle Media pools See Calculating media condition onConcepts guide 135 How to use media pools Media pool property examplesMedia pools and dcbf directories Free pools Default media pools What is a free pool? When is a free pool used?Free pool benefits Free pool properties Media quality calculationFree pool limitations Simple one device/one media pool relation Media pool usage examples Configuration of media pools for large libraries Multiple devices, single media pool Implementing a media rotation policy What is a media rotation policy? Media needed for rotation Media rotation and Data ProtectorAutomatic media rotation and media handling Estimating the quantity of needed media What is initializing formatting media? Media management before backups beginInitializing or formatting media Labeling Data Protector media How are labels used? Location field Selecting media for backups Media management during backup sessions Media condition Adding data to media during backup sessionsMedia 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 Vaulting usage example Implementing vaulting Devices Using devices with Data ProtectorRestoring from media in a vault Concepts guide 153 TapeAlert Library management console support Device lists and load balancing How to configure device streaming What is device streaming?Device streaming and concurrency How load balancing works Disk agent concurrency Segment sizeIncreased performance Multiple data streams Data format Block size Number of disk agent buffers Device locking and lock namesDevice names Physical device collision Standalone devicesPreventing collision What are standalone devices? Small magazine devices Large libraries Configuring a libraryHandling of media Size of a library Enter / eject mail slots Sharing a library with other applicationsBarcode support Advantages of barcodes Cleaning tape support What is library sharing?Sharing a library with multiple systems Control protocols and Data Protector Media Agents Connecting drives to multiple systems Required Data Protector Media Agent for drive control Drive controlDrive control protocol Ndmp Scsi Required Data Protector Media Agent for robotic control Exemplary configurationsADIC/GRAU Scsi Ndmp ACS 168 Media management and devices Sharing a Scsi library robotics attached to an Ndmp Server Sharing an ADIC/GRAU or StorageTek ACS library Data Protector and Storage Area Networks Storage Area Networks Storage Area Network Fibre Channel Loop topology Point-to-point topology Loop initialization protocol Switched topology Configuring multiple paths to physical devices Device sharing in SANConcepts guide 175 Path selection Why use multiple paths Backward compatibility Device lockingDevice locking with multiple applications Device locking within Data Protector Indirect Library Access Indirect and Direct Library Access Indirect Library Access Direct Library Access Static drives Device sharing in clusters Concepts guide 181 Floating drives 182 Media management and devices Users and user groups Access to backed up dataIncreased security for Data Protector users Visibility of backed up data Default administrators Users and user groupsPredefined user groups Following default groups are provided by Data Protector Using predefined user groupsUser group Access rights Data Protector predefined user groups 186 Users and user groups About the IDB Data Protector internal database IDB size and growth consideration IDB on the Windows Cell ManagerIDB location IDB format IDB architecture IDB on the Unix Cell ManagerIDB in the Manager-of-Managers environment Media Management Database Mmdb Underlying technologyMmdb records Mmdb size and growth Catalog Database CDBMmdb location CDB records Size and growth for CDB objects and positions Detail Catalog Binary Files DcbfCDB location Dcbf information Dcbf location Session Messages Binary Files SmbfSmbf records Smbf size and growth During backup IDB operationServerless Integrations Binary Files Sibf During restore During object copying or object consolidationExporting media Overview of IDB management IDB configurationRemoving the detail catalog Filenames purge IDB recovery IDB maintenanceIDB growth and performance Key IDB growth and performance factors IDB growth and performance key tunable parameters Concepts guide 199 Logging level as an IDB key tunable parameter Logging level and browsing for restore Logging level and restore speedImpact on performance Catalog protection as an IDB key tunable parameter Catalog protection and restoreRecommended 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 Application Response Measurement version 2.0 ARM 2.0 API What Is ARM? ARM functionality Snmp traps Integration with HP Operations Manager softwareMonitor Functionality of the Data Protector OM integration Reporting and notification Reporting and notification examples Event logging and notification Windows application log Java-based online reportingData Protector log files Using the data provided by Data Protector Data Protector checking and maintenance mechanismCentral 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 Data Protector OM SIP Operational error status report Direct SIP integration example How Data Protector operates Data Protector processes or servicesSystems, the system inet daemon Inetd starts the Data Protector Inet process CRS Backup sessionsMMD RDS Backup session data flow and processes Scheduled and interactive backup sessionsScheduled backup session Interactive backup session How many sessions can run concurrently? Backup session information flow On page 223 shows multiple sessions running concurrently Pre-exec and post-exec commands Mount requests in backup sessions Queuing of backup sessions Backing up with disk discovery Restore sessions What happens in a restore session? Restore session data flow and processes How many restore sessions can run concurrently? Queuing of restore sessions Parallel restores Mount requests in a restore sessionWhat is a parallel restore? How does it compare to a standard restore? Object copy sessions Fast multiple single file restore Object copy session data flow and processes Automated and interactive object copy sessions How many sessions can run concurrently? Mount requests in an object copy session Queuing of object copy sessions 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? Overview of database operation Integration with database applications Relational database Online backup of databases and applications Filesystem backup of databases and applications Data Protector integration with databases Concepts guide 241 242 Requirements and support on Supported configurations on Direct backup Configurations on How direct backup works Direct backup benefitsBackup types Environment Direct backup architecture About XCopy About resolve Direct backup process flow Backup stages for data filesXCopy + Resolve Restore There are two restore options when using direct backupRequirements and support Three hosts CM, application, Resolve Supported configurations Basic configuration single host Two Hosts Cell Manager/Resolve Agent and applicationConcepts guide 251 252 Disk backup benefits on Data Protector disk-based devices on Disk backup Disk backup benefits Standalone file device Data Protector disk-based devicesFile jukebox device File library device Configuration Recommended disk-backup deviceData format Backing up to a disk device Concepts guide 257 Synthetic backup Synthetic backup benefits How Data Protector synthetic backup worksSynthetic backup brings the following benefits Synthetic backup Synthetic backup and media space consumption Restore and synthetic backup Full and incremental backups Regular synthetic backup Page 264 Split mirror concepts Split mirror backup concept Instant recovery ZDB to tape and ZDB to disk+tape Backup clients and clustersZDB to disk Replica set rotation Concepts guide 269 Local mirror dual host Remote mirror Local mirror single host Concepts guide 271 Split mirror remote mirror LAN-free remote backup data HA Local/remote mirror combination Other configurations 274 Split mirror concepts Storage virtualization Snapshot concepts RAID Snapshot concepts Snapshot backup Snapshot backup types Replica set and replica set rotation Instant recoveryTypes of snapshots Snapshots with the preallocation of disk space Snapclones Snapshots without the preallocation of disk space Basic configuration single disk array dual host Multiple disk arrays dual host Other supported configurations 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 restore VSS backup 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 Requirements Backup strategy requirements Solution overview Proposed solutionProposed environment Department Current Data Projected Data Devices 5 Years Proposed solution in detail Estimating the size of the IDB Proposed XYZ backup topology Input parameters Page Staggering approach Department Current Data/Backup Time Remote full backups to the HP DLT 4115 libraryTime ENG1BS Othbs ENG2BSAdmbs Dbbs Restore options 312 Backup scenarios Size of backup environment Company ABC#UX Current ABC Cape Town backup topology Maximum acceptable downtime for recovery Problems with current solutionType of data Maximum downtime Concepts guide 315 Type of data Max data storage time How long data should be keptAmount of data to be backed up Location Amount of data to be backed up in five years ABC enterprise environment Why use the CMMDB? Why configure into seven cells?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 Staggering Approach for ABC Cape Town Why use differential incr1 backups? Name Cell Description Backup day Time ABC’s backup specification configurationSERVERSA...G USERSD...G Backup options Page 330 Backup generations What is a backup generation?Further information Examples of automated media copying Backup generations Example 1 automated media copying of filesystem backups Incr1 backupConfiguring backups Configuring automated media copying Concepts guide 335 Full backup 336 Full backup and automated media copying Example 2 automated media copying of Oracle database backups Full database backup and automated media copying Localization Internationalization Background File name handling File name handling during restore File name handling during backupBrowsing 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 Backup See also backup specification, incremental backup, and full Backup view Backup typesBackups/templates. Default view By Group according to the group to which backup Or BCV devices, are dedicated SLDs that are pre-configured Or development. When used for backup purposes, the originalManual and disaster and recovery SAP R/3 specific term An SAP R/3 backup tool that allows Saved with Brbackup Restore files of the following typeNon-database files saved with Brbackup You can specify files, tablespaces, complete backups, log CDB CAPSee also Mmdb See also MoM Microsoft Exchange Server and Lotus Domino Server specific See also backup to IAP Microsoft Exchange Server specific term Cluster continuous See also Exchange Replication Service and local continuousReplication Informix Server specific term a Windows CMD script that is CV EVA HP StorageWorks EVA specific term The user interface thatVLS 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 copy set See also backup typesInformix 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 See also library Microsoft Exchange Server specific term The MicrosoftSee also importing media See also CA+BC EVA Volume and each of these copies can have additional two Backup mediaBi-directional transmission of large data files and can be Allows any server to perform replication activity Run out of media. The media pools must be configured to use Flash recoveryFull backup Backup Full ZDB HSM GUI Replica LdevEVA provider SMI-S EVA Icda Microsoft Exchange Server specific term a backupEMC Symmetrix specific term EMCs Symmetrix Integrated IDB BCV control operations, an incremental restore reassigns a Incremental restorePair. 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 Isql See also Information Store and Site Replication ServiceKMS LBO Microsoft Exchange Server specific term Local continuous LISTENER.ORA Service Microsoft SQL Server specific term The name a user uses to Oracle and SAP R/3 specific term The format of the loginLVM See Wake Onlan MCU Microsoft Exchange Server specific term a partCA HP StorageWorks Disk Array XP specific term, and HP See MoM Robotics control of a library During a restore session, a Media Agent locates data onMedia allocation Or off-site storage See also overwrite Symmetrix and HP StorageWorks Disk Array XP specific TermStorageWorks Disk Array XP specific Term See also CMMDB, CDB MmdbMSM HP StorageWorks Disk Array XP specific term Mirror Unit See backup object Onconfig See also zero downtime backup ZDB and online backupSee 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 HP StorageWorks Disk Array XP specific term Standard HP See also post-execMicrosoft Exchange Server specific term The part HP StorageWorks Disk Array XP specific term The RAID Rdbms RCURDF1/RDF2 EMC Symmetrix specific term a type of Srdf device group HP StorageWorks Disk Array XP specific term The Remote Rman 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 HP StorageWorks Disk Array XP Specific term See also snapshot 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 Checkpoints and the quorum resource recovery log, which Any number of incremental backupsPutting stress on the production servers or the network. a Synthetic full See ZDB to disk Disaster recovery specific term a system after a computerZDB specific term See also source R1 device See also Microsoft Volume Shadow Copy Service VSS Oracle and SAP R/3 specific term a network configurationTNSNAMES.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 Configuration Replica, secondary volume S-VOL, and replica set rotation ZDB Informix Server specific term ON-Bar and Data Protector See also zero downtime backup ZDB, ZDB to disk, instant Arrays, split mirror restore can also be usedRecovery, ZDB to disk+tape, and replica Recovery 402Glossary Index 404 Page Hardware, 68, 70 software Concepts Snapshot backup, 276 split mirror backup CRS 408 Direct Backup Selecting for restoreSupported configurations 324 410 Failover, 81, 82 FC-AL 412 See IDB Internationalization, 340 IT management See also librariesSize 414 Loose, 147 strict Media pools, 135, 309, 325 default, 136 propertiesMedia condition, 150 calculating, 150 fair Good 416 RDS Restores, 125 SANData, 194 location Sharing libraries, 47, 162, 163, 164 Sibf data Backup, 43 RAID Snmp HP, 33 technical support 422