HP B6960-96035 - Manual

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About this guide This guide describes Data Protector concepts. Read this manual to fully understandthe fundamentals and the model of Data Protector. Intended audience This guide is intended for users interested in understanding the concepts of DataProtector operation and for people who plan company ...

This guide describes how to configure MPE/iX clients and how to back up andrestore MPE/iX data. • HP Data Protector Media Operations user's guide This guide provides tracking and management of offline storage media. It describesthe tasks of installing and configuring the application, performing dail...

Documentation map Abbreviations Abbreviations in the documentation map that follows are explained below. The guidetitles are all preceded by the words “HP Data Protector”. Guide Abbreviation Command line interface reference CLI Concepts guide Concepts Disaster recovery guide DR Getting started guide...

Guide Abbreviation Installation and licensing guide Install Media Operations getting started guide MO GS Media Operations product announcements, software notes, andreferences MO RN Media Operations user guide MO UG MPE/iX system user guide MPE/iX Product announcements, software notes, and references...

Integrations Look in these guides for details of the following integrations: Guide Integration IG-OMU, IG-OMW HP Operations Manager for UNIX/for Windows IG-PM/PA HP Performance Manager IG-PM/PA HP Performance Agent Concepts guide 29

Guide Integration IG-Var Sybase all ZDB EMC Symmetrix IG-Var VMware Document conventions and symbols Table 2 Document conventions Element Convention Cross-reference links and e-mail addresses Blue text: Table 2 on page 31 website addresses Blue, underlined text: http://www.hp.com Text emphasis Itali...

NOTE: Provides additional information. TIP: Provides helpful hints and shortcuts. Data Protector graphical user interface Data Protector provides a cross-platform (Windows and UNIX) graphical userinterface. You can use the original Data Protector GUI (Windows only) or the DataProtector Java GUI. For...

Figure 1 Data Protector graphical user interface General information General information about Data Protector can be found at http://www.hp.com/go/ dataprotector . HP technical support For worldwide technical support information, see the HP support website: http://www.hp.com/support Before contactin...

Subscription service HP recommends that you register your product at the Subscriber's Choice for Businesswebsite: http://www.hp.com/go/e-updates After registering, you will receive e-mail notification of product enhancements, newdriver versions, firmware updates, and other product resources. HP webs...

1 About backup and DataProtector In this chapter This chapter provides an overview of backup and restore concepts. It introduces DataProtector architecture, media management, user interfaces, backup devices, andother features. The chapter concludes with an overview of Data Protector configurationand...

The DSI integration provides a set of scripts and configuration files from whichusers are able to see how to add their own queries using Data Protector reportingcapabilities. • Monitoring, Reporting and Notification Superior web reporting and notification capabilities allow you to easily view thebac...

Figure 2 Backup process In most cases, the source is data on a disk, such as files, directories, databases, and applications. If the backup is expected to be used for disaster recovery, it needs tobe consistent. Software that actually copies data to the destination is a backup application. The desti...

Figure 4 Network backup To accomplish backup of a network environment you need an application that allowsyou to: • Attach backup devices to any system in the network This enables local backups of systems with large volumes of data and networkbackups in order to reduce backup device costs. • Route ba...

The Data Protector internal database (IDB) keeps track of the files you back up so that you can browse and easily recover the entire system or single files. Data Protector facilitates backup and restore jobs. You can do an immediate (orinteractive) backup using the Data Protector user interface. You...

Systems to be backed up Client systems you want to back up must have the Data Protector Disk Agent (DA),also called Backup Agent , installed. To back up online database integrations, install the Application Agent . In the rest of the manual, the term Disk Agent will be used for both agents. The Disk...

Figure 6 Backup or restore operation Backup sessions What is a backup session? A backup session, shown in Figure 7 on page 44, is a process that creates a copy of data on storage media. It is started either interactively by an operator using theData Protector user interface, or unattended using the ...

Figure 7 Backup session A typical backup session is more complex than the one shown in Figure 7 on page 44. A number of Disk Agents read data from multiple disks in parallel and send data toone or more Media Agents. For more information on complex backup sessions, see Chapter 7 on page 219. Restore ...

Enterprise environments What is an enterprise environment? A typical enterprise network environment, shown in Figure 9 on page 45, consists of a number of systems from different vendors with different operating systems. Thesystems may be located in different geographical areas and time zones. All th...

Why split large environments into multiple cells? • Geographical grouping of systems. • Logical grouping of systems, for example, departments. • Slow network connection between some systems. • Performance considerations. • Separate administrative control. For a list of considerations in planning you...

Figure 11 Manager-of-Managers environment Manager-of-Managers provides the following features: • Centralized licensing repository This enables simplified license management. This is optional but useful for verylarge environments. • Centralized Media Management Database (CMMDB) The CMMDB allows you t...

Media management Data Protector provides you with powerful media management, which lets you easilyand efficiently manage large numbers of media in your environment in the followingways: Media management functionality • Grouping media into logical groups, called media pools , which allows you to thin...

Backup devices Data Protector defines and models each device as a physical device with its ownusage properties, such as the default pool. This device concept is used because itallows you to easily and flexibly configure devices and use them in conjunction withbackup specifications. The definition of...

User interfaces Data Protector provides easy access to all configuration and administration tasksusing the Data Protector GUI on Windows and UNIX platforms. You can use theoriginal Data Protector GUI (on Windows) or the Data Protector Java GUI (onWindows and UNIX). Both user interfaces can run simul...

Figure 14 Original Data Protector GUI Figure 15 Data Protector Java GUI Data Protector Java GUI The Data Protector Java GUI is a Java-based graphical user interface with a About backup and Data Protector 52

client-server architecture. It enables backup management with the same look and feelas the original Data Protector GUI. The Java GUI consists of two components: Java GUI Server and Java GUI Client. Figure 16 on page 53 shows the relationship between these components. Figure 16 Data Protector Java GU...

Overview of tasks to set up Data Protector This section provides an overview of global tasks to set up your Data Protector backupenvironment. Depending on the size and complexity of your environment, you maynot need to go through all these steps. 1. Analyze your network and organizational structure....

Backup strategy planning Data Protector is simple to configure and administer. However, if you work in a largeenvironment with diverse client systems and huge amounts of data to back up, planin advance. Planning simplifies subsequent configuration steps. What is backup strategy planning? Backup stra...

The time needed for backup depends on the type of backup, full or incremental.For more information, see “ Full and incremental backups ” on page 91. Data Protector also backs up some popular online database applications. For moreinformation, see the HP Data Protector integration guide. If you back u...

• Consider backing up to a disk-based device. Besides other benefits, backup to disk reduces the time needed for backup and enables the use of advancedbackup strategies such as synthetic backup and disk staging. • Consider configuring your system for direct backup by attaching a library device to th...

Installing and maintaining client systems If you have several UNIX and Windows client systems, an efficient mechanism forthe installation of Data Protector becomes important. Local installation on every clientis not feasible in large environments. Installation Servers and the Cell Manager The main s...

that each client system is accessible from every other client system using the samefully qualified node name. Creating cells in the Windows environment Due to the different possible configurations (domain versus workgroup), the variouslevels of support for Windows Administrators may have some impact...

Windows workgroups Some of the configuration tasks require more steps in some cases, because there areno global users as in a domain. Software distribution requires a unique logon forevery client system that you install the software on. This means that to install 100client systems in a workgroup env...

You can configure a single cell over geographically remote locations. In this case,you need to ensure that data transfer from each client system to the correspondingdevice is not done over a WAN. Because a WAN network is not a stable connection,it is possible that connections are lost. MoM environme...

To maximize performance, use local backup configurations for high volumedatastreams. Network or server versus direct backups Sending data over a network and through a server introduces additional overhead,as the network and the server become performance considerations. Data Protectorhandles the data...

High performance hardware other than devices Performance of computer systems The speed of computer systems themselves directly impacts performance. The systemsare loaded during backups by reading the disks, handling software compression,and so on. The disk read data rate and CPU usage are important ...

3 fast tape devices, consider using 3 dedicated network links between system_Aand system_B. • Load Balancing Using this Data Protector feature, Data Protector dynamically determines whichobject (disk) should be backed up to which device. Enable this feature, especiallyto back up a large number of fi...

Disk performance All data that Data Protector backs up resides on disks in your systems. Therefore, theperformance of disks directly influences backup performance. A disk is essentially asequential device, that is, you can read or write to it, but not both at the same time.Also, you can read or writ...

improve performance in your specific environment and determine the optimumasynchronous reading settings. SAN performance If large volumes of data need to be backed up in one session, the time needed totransfer the data becomes significant. This consists of the time required to move thedata over a co...

Data Protector security features The following features allow and restrict access to Data Protector and the backed updata. The items in this list are described in detail in the following sections. • Cells • Data Protector user accounts • Data Protector user groups • Data Protector user rights • Visi...

When is the account checked? When a user starts the Data Protector user interface, Data Protector checks user rights.User rights are also checked when specific tasks are performed by a user. For more information, see Chapter 4 on page 183. Data Protector user groups What are user groups? When a new ...

Visibility of backed up data Backing up data means creating a new copy. Therefore, when you deal withconfidential information, it is important to restrict access to both the original dataand to the backup copy itself. Hiding data from other users When configuring a backup, you can decide whether dur...

encrypts the data. Thus the backed up data is encrypted before it is transferred overthe network and written to media. Figure 17 on page 77 shows a basic interaction during an encrypted backup session with the AES 256-bit encryption option selected. Figure 17 Backup session with AES 256-bit encrypti...

If a source medium involved in an automatic media copy session stores encryptedas well as non-encrypted data, all data written to the corresponding target mediumwill be either encrypted or non-encrypted, depending on current settings fordrive-based encryption. Figure 18 on page 78 shows a basic inte...

the CRS process is running, or the user specified as the owner in the backupspecification options. For instructions on how to specify a backup owner, see theonline Help index: "ownership". Backup ownership and restore Backup ownership affects the ability of users to see and restore data. Unl...

Figure 19 Typical cluster Components: • Cluster nodes (two or more) • Local disks • Shared disks (shared between nodes) Cluster nodes Cluster nodes are computers that compose a cluster. They are physically connected to one or more shared disks. Shared disks The shared disks volumes (MSCS, Novell Net...

A cluster-aware Data Protector Cell Manager that is responsible for running the IDBand managing backup and restore operations has many major benefits overnon-cluster versions: High availability of the Data Protector Cell Manager All Cell Manager operations are always available since Data Protector s...

• The Data Protector client is installed in a cluster. The Cell Manager (if not installedin the cluster) in such a case is not fault tolerant; the operations in the cell mustbe restarted manually. The behavior of the Cell Manager after the failover is configurable as far as thebackup session (failed...

Figure 20 Cell Manager installed outside a cluster When creating a backup specification, you can see three or more systems that canbe backed up in the cluster. • Physical Node A • Physical Node B • Virtual Server Virtual server backup If you select the virtual server in the backup specification, the...

The following is the expected backup behavior under this configuration. Table 3 Backup behavior Result Condition Successful backup Failover of the node beforea backup starts Filesystem/disk image backup: The backup session fails. The completed objects from the session can be used for restore,the fai...

NOTE: The difference with the previous example is that each of the cluster nodes has a DataProtector Media Agent installed. Additionally, you need to use the Data Protector loadbalancing functionality. Include both devices in the backup specification. With loadbalancing set to min=1 and max=1 , Data...

NOTE: Clusters do not support a SCSI bus with shared tapes. To bring high availability also toMedia Agents, the Fibre Channel technology can be used as an interface to the device.The device itself is not highly-available in this configuration. This configuration allows the following features: • Cust...

Result Condition Filesystem/disk image backup The backup session fails at failover of the node where the filesystem is installed. The completedobjects from the session can be used for restore, the failed(running and pending) objects need to be backed up again byrestarting the session manually. Failo...

Incremental backup Full backup A restore takes more time becauseof the number of media needed. Enables simple and quick restore. Restore Occupies less space in the IDB. Occupies more space in the IDB. IDB impact Data Protector can also make incremental backups of online database applications.These v...

Figure 23 Incremental backups Figure 24 Leveled incremental backups Table 7 on page 95 shows the relative referencing of backup runs with various backup types. See the text following the table for a full explanation. Table 7 Relative referencing of backup runs Incr1 <---- Full 1 Incr2 <---- &l...

Incr3 <---- Incr1 <---- Full 8 Incr3 <---- Incr2 <---- Incr1 <---- Full 9 Incr3 <---- Incr2 <---- <---- <---- Full 10 Incr3 <---- <---- <---- <---- <---- Full 11 How to read Table 7 on page 95 • The rows in Table 7 on page 95 are independent of each other an...

Keeping backed up data and information about thedata Data Protector lets you specify how long to keep your backed up data on the mediaitself (data protection), how long to keep information about the backed up data inthe IDB (catalog protection), and what level of information to keep in the IDB (logg...

Catalog protection What is catalog protection? Data Protector saves information about backed up data in the IDB. Since theinformation about the backed up data is written to the IDB each time a backup isdone, the IDB grows with the number and the size of backups. Catalog protectiontells Data Protecto...

Exporting media from a cell Exporting media from a Data Protector cell removes all the information about backedup data on the media and the media themselves from the IDB. You cannot browse,select or restore files from exported media using the Data Protector user interface.You need to re-read (or add...

on UNIX or disk drives on Windows systems) and the destinations are specified (tape)devices. During the backup session, Data Protector reads the objects, transfers datathrough the network, and writes it to the media residing in the devices. The backupspecification names the devices to use. It also c...

Backup sessions What is a backup session? A backup session is a process that backs up data from a client system to media. Abackup session always runs on the Cell Manager system. A backup session is basedon a backup specification and is started when a backup is run. During a backup session, Data Prot...

You can combine full and incremental backups when you configure scheduledbackups. For example, you may run a full backup on Sundays and incrementalbackups every working day. To back up a large amount of data and avoid the highvolume peak for the full backups, use the staggered approach. See “ Stagge...

This section combines all these concepts by giving some examples of backup schedulesand some tips for efficient scheduling. When to schedule backups Typically, you schedule backups to run during lowest user activity, usually at night.Full backups take the most time, so schedule them at weekends. Con...

incremental backup. For more information on how Data Protector selects media forbackups, see Selecting media for backups . Example 1 Figure 28 on page 108 depicts a scheduling policy based on a full backup plus simple incremental backups. Figure 28 Full backup with daily simple incremental backups T...

Figure 29 Full backup with daily level 1 incremental backups This policy requires slightly more time for backups and also requires a little moremedia since you back up all the changes from the last full backup every day. Torestore files from Thursday’s backup, you need to provide media for the full ...

Figure 30 Full backup with mixed incremental backups This policy takes into account the fact that there are not many changes duringweekends. Data is backed up using a combination of simple incremental backupsand Incr1 (differential) backups to optimize backup performance. To restore filesfrom Thursd...

If you need to back up large amounts of data and the backup window presentsa problem, consider backing up to disk-based devices and using advanced backupstrategies such as synthetic backup and disk staging. • How can I prepare running applications for backups? Many applications keepfiles open, so ru...

Smart MediaCopy Media copy Object mirror Object copy No 3 No 2 Yes Yes Appendabilityof target media Media identicalto the sourcemedia Media identicalto the sourcemedia Mediacontaining theselected objectversions Mediacontaining theselected objectversions Result of theoperation 1 Source media are loca...

Figure 31 Object copy concept In the figure, there is an object version resulting from a backup of object A, version1, and two additional copies of the same object version. Version 1-1 has beenobtained by copying the object version resulting from the backup, and version 1-1-1by copying a copy of the...

Figure 32 Freeing media Demultiplexing of media Multiplexed media contain interleaved data of multiple objects. Such media mayarise from backup sessions with the device concurrency more than 1. Multiplexedmedia may compromise the privacy of backups and require more time for restore. Data Protector o...

Figure 33 Demultiplexing a medium Consolidating a restore chain You can copy a restore chain (all backups that are necessary for a restore) of anobject version to a new media set. A restore from such a media set is faster and moreconvenient, as there is no need to load several media and seek for the...

Figure 34 Disk staging concept Disk staging also eliminates the need for frequent backups of numerous small objectsto tape. Such backups are inconvenient due to frequent loading and unloading ofmedia. The use of disk staging reduces backup time and prevents media deterioration. Object mirroring What...

Figure 35 Object mirroring Selection of devices Object mirroring is load balanced by default. Data Protector makes optimum use ofthe available devices by utilizing as many devices as possible. Devices are selectedaccording to the following criteria in the order of priority: • devices of the same blo...

Backup performance also depends on factors such as device block sizes and theconnection of devices. If the devices used for backup and object mirroring havedifferent block sizes, the mirrored data will be repackaged during the session, whichtakes additional time and resources. If the data is transfe...

Automated media copying What is automated media copying? Automated media copying is an automated process that creates copies of the mediacontaining backups. This functionality is available with library devices. Data Protector offers two types of automated media copying: post-backup mediacopying and ...

Smart media copying using VLS What is smart media copying? In smart media copying, the data is first backed up to a virtual tape library (VTL)configured on the Virtual Library System (VLS). Then, a copy of a virtual tapecontaining a backup is made to the physical library attached to the VLS in a pro...

Restoring data Policies for restoring data are an essential part of the overall backup strategy in thecompany. Keep the following in mind: • Backing up and restoring files is essentially the same as copying files. Therefore,ensure that only authorized people have the rights to restore confidential d...

Selection of the media set If an object version that you want to restore exists on more than one media set, whichhas been created using one of the Data Protector data duplication methods, any ofthe media sets can be used for the restore. By default, Data Protector automaticallyselects the media set ...

SQL Server, and Microsoft SharePoint Portal Server integrations. Such databasesare usually backed up with interdependent data streams and, consequently,restore must be started with the same number of devices as used during backup. • Automatic device selection (default): Data Protector should automat...

End users are allowed to restore Another possible restore policy is to allow all or just selected end users to restoretheir own data. This policy provides sufficient security and may relieve the backupoperator from doing a number of restore operations. When to use this policy Use this policy in the ...

Disaster recovery methods Data Protector supports the following disaster recovery methods: • Manual disaster recovery This is a basic and very flexible disaster recovery method. You need to installand configure the DR OS. Then use Data Protector to restore data (including theoperating system files),...

Alternative disaster recovery methods This section compares the Data Protector disaster recovery concept with concepts ofother vendors. This section points out only significant aspects of alternative recoveryconcepts. Two alternative recovery approaches are discussed: Recovery methods supported by o...

Media management functionality Data Protector provides the following media management functionality that allowssimple and efficient management of a large number of media: • Grouping media into logical groups, media pools, that enable you to think aboutlarge sets of media without having to worry abou...

1. Preparing media for backup. This includes initializing (formatting) media for use with Data Protector andassigning media to media pools, which are used to track the media. For more information, see “ Media management before backups begin ” on page 145. 2. Using media for backup. This defines how ...

• system platform (one pool for UNIX systems, one for Windows 2000 systems,and one for Windows XP systems) • per system (every system has its own pool) • organizational structure (all systems in department_A have a pool, and systemsin department_B have another pool) • systems categories (running lar...

What is a free pool? A free pool is an auxiliary source of media of the same type (for example, DLT) foruse when all free media in a regular pool run out. It helps to avoid failed backupsdue to missing (free) media. Figure 36 Free pools When is a free pool used? Media are moved between regular and f...

Media pool usage examples The examples below show some configurations you may want to consider whenchoosing the appropriate strategy for a particular backup environment. Example 1 In the model shown in Figure 37 on page 140, all objects are backed up to the same media pool. The backup specification ...

Figure 38 Configuration of media pools for large libraries Example 3 Figure 39 on page 142 shows an example when data is backed up to media in a media pool with multiple devices simultaneously. Higher performance is achieveddue to the use of several devices in parallel, regardless of which pool is u...

Figure 39 Multiple devices, single media pool Example 4 Data is backed up to media in multiple media pools on multiple devicessimultaneously. If you want to use the same device with different pools, you need tocreate several backup specifications. In the example below, a separate media poolis dedica...

Figure 40 Multiple devices, multiple media pools Implementing a media rotation policy What is a media rotation policy? A media rotation policy defines how media are used during backup, including thefollowing. In defining a media rotation policy, answer the following questions: • How many backup gene...

Media rotation and Data Protector Automatic media rotation and media handling Data Protector automates media rotation and media handling as follows: • Because media are grouped into media pools, you no longer need to managesingle media. Data Protector automatically tracks and manages each singlemedi...

By now you should be able to estimate the quantity of media required for a full mediarotation. Additional media will be required in case you: • Assume 10% overhead added by Data Protector to the data on the media fordirectory and file information. This information is already calculated in the backup...

Data Protector also assigns each medium a media ID that uniquely identifies thismedium. An ANSI X3.27 label is also written on the tape for identification on other systems.Data Protector writes these labels with other information to a medium header and tothe IDB. If you change the medium label, Data...

Media management during backup sessions What happens during backup? During a backup session, Data Protector automatically selects media for backup andkeeps track of which data is backed up to which media. This simplifies managementof media so that the operator does not need to know exactly which dat...

Media condition The condition of the media also influences which media are selected for backup, forexample, media in good condition are used for backup before media in fair condition.For more information, see “ Calculating media condition ” on page 150. Adding data to media during backup sessions To...

Figure 41 Multiple objects and sessions per medium, sequential writes Figure 41 on page 149 shows an example of eight sequential writes over four sessions, using the appendable media usage policy. The data was written in four sessions,one object at a time. The three media belong to the same media po...

concurrently written in sess_7 and the second one in sess_8. Note that one objectcan be stretched over several media. The media usage policy is appendable. Figure 44 Each object written on a separate medium Figure 44 on page 150 shows an example of using one backup specification per object with the ...

• media age The age of a medium is calculated as the number of months that have elapsedsince you formatted, or initialized, the medium. Once a medium is older than thethreshold number of months, it is marked as poor. • device errors Some device errors result in the medium being marked as poor. If a ...

Restoring from media in a vault Restoring media from a vault is no different than restoring from any other media.Depending on how your data and catalog protection policies are defined, you mayneed to do some additional steps: 1. Bring media from a vault and insert the media into a device. 2. If the ...

Device lists and load balancing Multiple devices for backup When configuring a backup specification, you can specify several standalone devicesor multiple drives in a library device that will be used for the operation. In this case,the operation is faster because data is backed up in parallel to mul...

gets full, the backup automatically continues on the medium in the next device in thedevice chain. How load balancing works For example, assume that there are 100 objects configured for backup to four deviceswith concurrency set to three and with load balancing parameters MIN and MAX both configured...

Disk agent concurrency The number of Disk Agents started for each Media Agent is called Disk Agent (backup) concurrency and can be modified using the Advanced options for the device or when configuring a backup. Data Protector provides default numbers that are sufficient formost cases. For example, ...

NOTE: Some tape technologies place limitations on the number of file marks per medium. Ensurethat your segment size is not too low. Figure 45 Data format Segment size, measured in megabytes, is the maximum size of data segments. If youback up a large number of small files, the actual segment size ca...

Increasing the block size can improve performance. Changing the block size shouldbe done before formatting tapes. For example, a tape written with the default blocksize cannot be appended to using a different block size. NOTE: Use the same block size for media that can be used with different device ...

Physical device collision When specifying a device used for backup, you may specify one device name inone backup specification and another device name of the same physical device ina different backup specification. Depending on the backup schedule, this may resultin Data Protector trying to use the ...

install a Data Protector Media Agent on the system with the device connected. DataProtector can detect and automatically configure most standalone devices. During a backup, Data Protector issues a mount request when the medium in a deviceis full. The operator must replace the medium for the backup t...

Large libraries What are library devices? Library devices are automated devices, also called autoloaders, exchangers orjukeboxes. In Data Protector, most libraries are configured as SCSI libraries. Theycontain a number of media cartridges in a device’s repository and can have multipledrives writing ...

• Obtain the number of required media. See “ Implementing a media rotation policy ” on page 143. Sharing a library with other applications A library device can be shared with other applications storing data to media in thedevice. You can decide which drives from the library you want to use with Data...

Protector internally redirects the robotic commands to the system that manages therobotics. Figure 47 Connecting drives to multiple systems Control protocols and Data Protector Media Agents The drives in the library must be able to physically connect to different systems thathave a Data Protector Me...

• SCSI—for robotics other libraries • NDMP—for NDMP robotics All four library robotic control protocols are implemented in both the General MediaAgent and in the NDMP Media Agent. Drive control Any Data Protector client system configured to control a drive in a library (regardlessof the drive contro...

Table 11 on page 167 show the Data Protector Media Agent (the General Media Agent or the NDMP Media Agent) required on a client system configured for roboticcontrol of a library with drives shared among multiple client systems. Table 11 Required Data Protector Media Agent for robotic control Robotic...

Figure 50 Sharing an ADIC/GRAU or StorageTek ACS library Figure 50 on page 170 shows an ADIC/GRAU or StorageTek ACS library, with its robotics attached to an ADIC/GRAU or StorageTek ACS Server and configured onthe Data Protector client system with either the General Media Agent or the NDMPMedia Agen...

Storage Area Networks A Storage Area Network (SAN), depicted in Figure 51 on page 172, is a new approach to network storage that separates storage management from servermanagement with a network devoted to storage. A SAN provides any-to-any connectivity for all network resources, thus enablingdevice...

Figure 51 Storage Area Network Fibre Channel Fibre Channel is an ANSI standard for high-speed computer interconnection. Usingeither optical or copper cables, it allows the bidirectional transmission of large datafiles at up to 4.25 gigabits per second, and can be deployed between sites withina 30 ki...

Point-to-point, loop, and switched Fibre Channel topologies can be mixed to best suityour connectivity and growth requirements. For a list of supported configurations, see the HP Data Protector productannouncements, software notes, and references or http://www.hp.com/support/ manuals . Point-to-poin...

Figure 52 Loop initialization protocol Switched topology The switched topology provides any-to-any connectivity between all nodes connectedto a switch. Switches are easy to install and use, because the Fibre Channel protocolprovides self-configuration and self-management. Switches automatically dete...

Device sharing in SAN Data Protector supports the SAN concept by enabling multiple systems to sharebackup devices in the SAN environment. The same physical device can be accessedfrom multiple systems. Thus, any system can perform a local backup on some deviceor any other device. Because data is tran...

Figure 53 Example multipath configuration Why use multiple paths With previous versions of Data Protector, a device could be accessed from only oneclient. To overcome this problem, several logical devices had to be configured for aphysical device using a lock name. Thus, if you were using lock names...

During a restore session, the device paths are selected in the following order: 1. Paths that are on the client to which the objects are restored, if all objects arerestored to the same target client 2. Paths that were used for backup 3. Other available paths If direct library access is enabled, loc...

Indirect and Direct Library Access Upon configuring Data Protector with a SCSI Library device, there are two ways inwhich client systems can access library robotics: Indirect Library Access and DirectLibrary Access. Indirect Library Access This configuration can be used in SAN as well as conventiona...

Figure 54 Indirect Library Access Note that you cannot use a shared library if the client system that controls the robotics, castor , in our example, fails. Direct Library Access When the SAN concept is used, Data Protector can be configured with a SCSI Libraryso that each client system has its own ...

Figure 55 Direct Library Access Device sharing in clusters Clustering, which is often used in combination with the SAN concept, is based onsharing network resources (for example network names, disks, and tapes devices)between nodes. Cluster-aware applications can at any time run on any node in a clu...

Floating drives Floating drives are device that are configured on a virtual host, using virtual systemnames. Floating drives should be configured for the backup of cluster-awareapplications. This ensures that no matter on which node in the cluster the applicationis currently running, Data Protector ...

4 Users and user groups In this chapter This chapter discusses Data Protector security, users, user groups, and user rights. It is organized as follows: “ Increased security for Data Protector users ” on page 183 “ Users and user groups ” on page 184 Increased security for Data Protector users Data ...

Using predefined user groups The following default groups are provided by Data Protector: Table 12 Data Protector predefined user groups Access rights User group Allowed to configure Data Protector and perform backup, restore,and all other available operations. Admin Allowed to start backups and res...

5 The Data Protector internaldatabase In this chapter This chapter describes the Data Protector internal database (IDB) architecture, as wellas its usage and operation. Explanations of the database parts and their records arepresented, along with recommendations on how to manage database growth andp...

• Fast and convenient restore The information stored in the IDB enables you toquickly find the media required for a restore, and therefore makes the restoremuch faster. It also offers you the convenience of being able to browse for filesand directories to be restored. • Backup management The informa...

The IDB on the UNIX Cell Manager IDB location The IDB on the UNIX Cell Manager is located in the /var/opt/omni/server/db40 directory. IDB format The IDB on the HP-UX and Solaris Cell Manager stores all text information in ASCIIsingle- and multi-byte formats. The ASCII format limits the support of fi...

For robustness considerations and recommendations for optimizing robustness byrelocating some IDB directories, see the online Help index: “robustness of IDB“. Underlying technology The MMDB and CDB parts are implemented using an embedded database consistingof tablespaces. This database is controlled...

Serverless Integrations Binary Files (SIBF) SIBF records The Serverless Integrations Binary Files stores raw NDMP restore data. This data isnecessary for restore NDMP objects. SIBF size and growth The SIBF does not grow very big in size. For more details, see “ IDB size estimation ” on page 203. For...

If transaction logging is enabled, an IDB backup removes old transaction logs andstarts creating new ones, which are necessary for an IDB recovery. During restore When configuring a restore, Data Protector performs a set of queries in the CDB andDCBF parts to enable users to browse virtual filesyste...

Removing the detail catalog When the detail catalog is removed for a specific medium, its DC binary file isremoved. The same result is achieved by removing the catalog protection for allobject versions and object copies on that medium (the next daily maintenance of DCbinary files removes the binary ...

IDB maintenance Once you configure the IDB, its maintenance is reduced to a minimum, mainly actingon notifications and reports. IDB recovery An IDB recovery is needed if some of the IDB files are missing or corrupted. Therecovery procedure depends on the level of corruption. For detailed information...

• Growth of your backup environment The number of systems being backed up inthe cell influences the IDB growth. Plan for the growth of your backup environment. • Character encoding used for your filenames (applicable for UNIX only) Dependingon the filename encoding, a character in the filename can t...

Figure 57 The influence of logging level and catalog protection on IDBgrowth Logging level as an IDB key tunable parameter What is logging level? Logging level determines the amount of details about backed up files and directorieswritten to the IDB. You can always restore your data, regardless of th...

Catalog protection as an IDB key tunable parameter What is catalog protection? Catalog protection determines how long the information about backed up data isavailable in the IDB. This is different from data protection, which determines howlong the backed up data is available on the medium itself. If...

Specifics for large cells If the number of files grows into the tens of millions, or there are tens of thousandsof files generated on a daily basis, and you use the Log All option, then backup speed and IDB growth will become a problem in a relatively short period of time. Inthis situation, you have...

6 Service management In this chapter Service Management, reporting, and monitoring help administrators manage theirbackup environments more effectively. This chapter describes the concepts behindthe service management features and benefits available in both a standalone DataProtector installation an...

Service management measures and reports are a key tool IT managers can use todemonstrate value delivered to the organization and also to maintain competitivecost structures. Service providers use Service Level Agreements (SLAs), that typicallyestablish availability and performance objectives, to doc...

Figure 58 Service management information flow Native Data Protector functionality The functionality described in the following sections comes with Data Protector “outof the box.” Key functions • Data Protector has been equipped to track the elapsed times of key operationsand to register this data as...

central operations console, such as HP Operations Manager software, paging asystem operator, or taking automated remedial action to resolve the problem. Table 13 ARM functionality Usage Additional data logged toARM (ARM 2.0) Transaction description(ARM 1.0) Availability and recoveryplanning. Chargeb...

Integration with HP Operations Manager software Functionality of the Data Protector OM integration Data Protector integrates with HP Operations Manager software (OM). OM simplifiesmanagement of large networks by allowing the operator to monitor and administerthe network and the applications from a s...

From the monitor’s user interface, you can abort a backup, restore, or mediamanagement session or respond to “mount” requests. If you make use of the Manager-of-Managers, you can monitor sessions of multiplecells simultaneously from one user interface. Reporting and notification Data Protector repor...

• Select from many delivery methods used to deliver reports (such as e-mail, SNMP,broadcast (available on Windows only), write to file, and send to externalcommand) You can combine most of these different formats, delivery methods, schedules, andtriggers. Some examples are shown below: Reporting and...

Data Protector log files Some Service Management applications, such as HP Operations Manager software,allow you to specify when and which log files should be monitored for a specific logentry. If the specified entry is detected in the file, an action can be specified. In OMthis is called Log file en...

Data Protector checking and maintenance mechanism Data Protector has a rich automated daily self-check and maintenance mechanism,which improves its operational reliability and predictability. Data Protector’s self-checkand maintenance tasks include: • “Not Enough Free Media” check • “Data Protector ...

• Sending major and critical Data Protector events to your network managementsolution, such as HP Network Node Manager (Data Protector built-in notificationengine sending SNMP traps). Service management integrations The following Data Protector integrations can be installed to help facilitate servic...

• Administration Reports • Media Pool Reports • Performance An IT Service Provider can use these reports to demonstrate its SLA compliance to acustomer. For example, the “Data Protector Transaction Performance” Report consistsof service performance metrics (one of the IT SLA parameters): Figure 60 D...

Figure 61 Operational error status report Data Protector OM SIP This integration also uses SIP to provide Data Protector information through aweb-based interface. It does not require OVO to be installed. The integration providesinformation through tables and gauges. Concepts guide 217

Figure 62 Direct SIP integration example Service management 218

7 How Data Protector operates In this chapter This chapter describes the operation of Data Protector. It explains Data Protectorprocesses (on UNIX) and services (on Windows), backup and restore sessions, andmedia management sessions. It is organized as follows: “ Data Protector processes or services...

Scheduled and interactive backup sessions Scheduled backup session A scheduled backup session is started by the Data Protector Scheduler at the timeyou have specified. You can view the progress of the scheduled backup session inthe Data Protector monitor. Interactive backup session An interactive ba...

4. The BSM starts Disk Agents (DAs) for each disk to be backed up in parallel. Theactual number of Disk Agents started depends on the concurrency of Disk Agentsconfigured in the backup specification. This is the number of Disk Agents thatcan be started to send data in parallel to a Media Agent, thus...

To prevent Data Protector processes from exceeding system capabilities, the maximumnumber of concurrent backup sessions is limited. The limit is configurable. Figure 64 on page 223 shows multiple sessions running concurrently. Figure 64 Backup session information flow - multiple sessions Pre-exec an...

Queuing of backup sessions Timeout When a backup session is started, Data Protector tries to allocate all needed resources,such as devices. The session is queued until the required minimum resources areavailable. If the resources are still unavailable after the timeout, the session is aborted.The ti...

Sending notification to an operator You can configure a Data Protector notification to send an e-mail to the operator withinformation about the mount request. The operator can take the appropriate actions,such as manually loading the needed media or aborting the session. For moreinformation, see “ R...

A restore session is started interactively. You tell Data Protector what to restore, letData Protector determine the needed media, select some options and start the restore.You and other users can monitor the progress of the session. Restore session data flow and processes What happens in a restore ...

Figure 65 Restore session information flow How many restore sessions can run concurrently? A number of restore sessions can run in the cell at the same time. This number islimited by resources in the cell, such as the Cell Manager and systems with connecteddevices. Queuing of restore sessions Timeou...

Mount requests in a restore session What is a mount request? A mount request appears in a restore session when the media needed for restore arenot available in the device. Data Protector allows you to configure a desired actionthat should happen when a mount request appears. Responding to a mount re...

Figure 66 Parallel restore session flow In a parallel restore, Data Protector reads multiplexed data for all selected objectsand assembles the parts needed for all the objects on the fly, sending the right datato the right Disk Agents. This improves performance when reading from the media.The perfor...

What is an object copy session? An object copy session is a process that creates an additional copy of the backedup data on a different media set. During an object copy session, the selected backedup objects are copied from the source to the target media. Automated and interactive object copy sessio...

Figure 67 Object copy session information flow Queuing of object copy sessions Timeout When an object copy session is started, Data Protector tries to allocate all neededresources. The session is queued until the required minimum resources are available.If the resources are still unavailable after t...

Object consolidation sessions This section describes how an object consolidation session is started, what happensduring the session, and the processes and services involved. What is an object consolidation session? An object consolidation session is a process that merges a restore chain of a backupo...

2. The CSM opens the IDB, reads the information about the needed media, andwrites the information about the object consolidation session, such as generatedmessages, to the IDB. 3. The CSM locks the devices. The session is queued until all read Media Agentsand the minimum required write Media Agents ...

available. If the resources are still unavailable after the timeout, the session is aborted.The timeout period can be set using the SmWaitForDevice global option. Mount requests in an object consolidation session What is a mount request? A mount request in an object consolidation session is issued w...

8 Integration with databaseapplications In this chapter This chapter gives a brief description of the integration of Data Protector with databaseapplications, such as Microsoft Exchange Server, Oracle Server, IBM DB2 UDB, andInformix Server. It is organized as follows: “ Overview of database operati...

Figure 68 Relational database Figure 68 on page 238 shows a typical relational database with the structures described below. Data files are physical files that contain all of a database’s data. They change randomly and can be very large. They are internally divided into pages. Transaction logs recor...

1. A transaction is first recorded into the transaction log. 2. Changes required in the transaction are then applied to cached pages. 3. From time to time sets of modified pages are flushed to data files on disk. Filesystem backup of databases and applications Databases are constantly changing while...

The essence of the backup interface is that it provides the backup application withconsistent data (even if it may not be consistent on the disk) while at the same timekeeping the database operational. Figure 69 Data Protector integration with databases Figure 69 on page 240 shows how a relational d...

9 Direct backup In this chapter This chapter introduces the direct backup concept and the technologies that enableit. The chapter also discusses the direct backup configurations that are supported byData Protector. It is organized as follows: “ Overview ” on page 243 “ Requirements and support ” on ...

Backup types Direct backup supports backup of application data files and control files and of diskimages -- either raw disk or raw logical volume. Direct backup benefits Because the data mover is in the SAN bridge and the technology that interprets thetarget system is built into the General Media Ag...

Figure 70 on page 246 shows a basic direct backup configuration. The Resolve Agent is on a separate backup host in this configuration. Data, however, does not movethrough this host. Figure 70 Direct backup architecture Environment This section describes the direct backup environment in terms of the ...

• The HP StorageWorks Disk Array XP (XP) is configured as Business Copy (BC)with mirrors configured with enough disk space. • The SAN is properly configured in order to provide access to source (disks) andtarget (tape) devices from both the XCopy engine and the host where the DataProtector General M...

XCopy + Resolve Prior to Resolve, you needed a server with a matching file system to get thisinformation. This was because even with the right server, getting this informationcould be difficult as the operating system might have converted the actual physicalsectors into its logical view before retur...

Database. The Backup Media Agent (BMA) writes catalog segments and delimitersbetween data and catalog segments known as file-marks. Restore There are two restore options when using direct backup: • If you are using the HP StorageWorks XP disk array and you have instant recoverycapability, you can us...

Supported configurations Three hosts: CM, application, Resolve This solution uses three hosts: one each for the Cell Manager, Resolve Agent, andapplication. Although this configuration requires three machines, the Resolve hostcan be a less expensive host and the resource load is split, helping you a...

Figure 71 Basic three host configuration Two Hosts: Cell Manager/Resolve Agent and application This solution uses two hosts: one for the Cell Manager and Resolve Agent and onefor the application. Although this configuration does require two machines, theresource load is split; this can help you avoi...

10 Disk backup In this chapter This chapter introduces the concepts associated with backing up data to disk andthe technologies that enable it. It also discusses the disk-to-disk backup configurationsthat are supported by Data Protector. It is organized as follows: “ Overview ” on page 253 “ Disk ba...

Disk backup benefits There are many situations in which it is advantageous to use disk-based devices whenperforming backups. Disk-based devices are, in fact, specific files in specifieddirectories, to which you can back up data instead of or in addition to backing it upto tape. The following list in...

• Overall, disk-based storage space is becoming increasingly cheaper even ifcompared to tape-based storage. Data Protector disk-based devices Data Protector has the following disk-based devices: • Standalone file device • File jukebox device • File library device Standalone file device The standalon...

11 Synthetic backup In this chapter This chapter introduces the concept of synthetic backup and explains the syntheticbackup solution provided by Data Protector. It is organized as follows: “ Overview ” on page 253 “ Disk backup benefits ” on page 254 “ Data Protector disk-based devices ” on page 25...

new, synthetic full backup. This can be repeated indefinitely, with no need to run afull backup again. In terms of restore speed, a synthetic full backup is equivalent to a conventional fullbackup. The restore chain consists of only one element, so a restore is as quick andsimple as possible. Synthe...

The following figures explain the concept of synthetic backup and virtual full backup.They show how a synthetic full backup or a virtual full backup is created from a fullbackup and any number of incremental backups. Figure 72 Synthetic backup Figure 72 on page 259 shows how a synthetic full backup ...

Figure 73 Virtual full backup Figure 73 on page 260 shows how a virtual full backup is created. With this type of backup, all the backups reside in a single file library that uses distributed file mediaformat. The Restore Media Agent (RMA) reads the information about the full backupand the increment...

Figure 74 Full and incremental backups In Figure 74 on page 261, conventional backups were performed. To restore to the latest possible state, you need the full backup and all four incremental backups. Therestore chain consists of five elements, which often reside on different media. Such a restore ...

12 Split mirror concepts In this chapter This chapter introduces the split mirror backup concept and discusses theconfigurations that are supported by HP. It is organized as follows: “ Overview ” on page 243 “ Supported configurations ” on page 269 Overview Modern high availability (HA) storage conf...

Figure 78 Split mirror backup concept The target volumes in replica are typically connected to a separate client, which also has tape devices connected to allow for local backup. Usually, hardware mirrortechnologies such as HP StorageWorks Disk Array XP or EMC Symmetrix are usedto create a replica s...

Supported configurations Local mirror - dual host This solution uses a local mirroring functionality such as Business Copy XP. Both disksare in the same disk array, which means the I/O infrastructure of the RAID system isactually shared between the application client (or host) and the backup client....

database into a consistent mode that permits the split, as well as to take it out of thismode again. This configuration enables an offline backup of a very large database in a short time,as well as an online backup that creates very few archive log files, since the backupmode time of the database is...

remote disaster recovery site using hardware mirror concepts is widely accepted inthe industry. Local/remote mirror combination If the customer has a need for a permanently available recovery site (provided, forexample, by a MetroCluster) in addition to a zero downtime backup solution, thecombinatio...

Other configurations There are many other possible split mirror configurations that provide some particularadvantage or fulfill a specific user need. However, each configuration has its specificbehavioral pattern that imposes specific requirements on the control functions in orderto guarantee backup...

13 Snapshot concepts In this chapter This chapter introduces the snapshot backup concepts and discusses the configurationsthat are supported by HP. It is organized as follows: “ Overview ” on page 275F “ Supported configurations ” on page 281 Overview The rapidly expanding requirement for high avail...

Figure 82 Snapshot backup The backup client is set up as a Data Protector client with tape devices connected,to allow a local backup to be performed. When a backup session begins, the application client enters the backup mode ofoperation while the backup client is being prepared for the backup proce...

• Databases can be put into backup mode • Databases can be taken offline • A mount point can be unmounted For an online database backup, snapshot data alone does not suffice for a restore.The archive log files from the application client are also needed. An archive log filesbackup utilizing the stan...

Instant recovery During snapshot backup sessions, several snapshot copies of data can be producedand can be retained on a disk array, each point-in-time copy in its own replica. Theretained snapshot copies of data can then be used for various purposes, such asoffline data processing or instant recov...

Supported configurations Basic configuration: single disk array - dual host Both hosts are connected to the same disk array, so that the I/O infrastructure of theRAID system is actually shared between the application client and the backup client. As the application client and the backup client are t...

1. Put the database into a consistent mode that permits a snapshot to be taken. 2. Perform a snapshot of the application data. 3. Return the database to normal operating mode. This configuration enables an offline backup of a very large database in a short time,as well as an online backup that creat...

Figure 85 Multiple application hosts - single backup host With this solution, multiple application hosts may be connected to a single or multipledisk arrays, which are, in turn connected to a single dedicated backup host. The I/Oinfrastructure of the RAID systems is shared between the application cl...

Figure 87 LVM mirroring - HP StorageWorks Virtual Array only In the supported configurations described previously, only Business Copy functionalityis possible with the HP StorageWorks Virtual Array integration. However, by usingLVM mirroring, it is possible to create snapshot copies of data between ...

VSS benefits The advantages of using Volume Shadow Copy service are as follows • A unified backup interface for all writers. • A unified backup interface for all shadow copy providers. • Writers provide data integrity at application level. Intervention from the backupapplication is unnecessary. Data...

VSS filesystem backup and restore Some applications are not aware of the Volume Shadow Copy service. Suchapplications cannot guarantee consistency of data during the creation of a shadowcopy. The VSS mechanism cannot coordinate the activities of these applications inorder to perform a consistent bac...

A Backup scenarios In this appendix This Appendix describes two scenarios: one for company XYZ and one for companyABC. Both companies plan to enhance their data storage systems. Their currentbackup solutions are described along with the inherent problems. Solutions are thenproposed to alleviate the ...

Determine the administration and operations rights for the backup systems users. Company XYZ XYZ is a translation agency providing the following services: • Translation, localization, language editing, and proof-reading • Certification of translated documents • Simultaneous and consecutive interpret...

Current devices Projecteddata (in 5Years) Currentdata #Clients #Servers Depart. 2 HPStorageWorksDAT24autoloaders 67 GB 22 GB 11 UX 1 AIX OtherLanguages 1 HPStorageWorksDAT24 autoloader 31 GB 10 GB 5 UX 1 HP-UX Admin Figure 91 on page 300 shows how the XYZ backup environment is organized. Figure 91 C...

Backup strategy requirements Requirements After addressing the items under “ Considerations ” on page 297, the following requirements have been identified for the backup solution of company XYZ: • Backup Policy • Full, weekly backups will occur and be completed within 12 hours. • Daily incremental b...

Proposed solution Because of the limitations of the current backup solution for both performance andenterprise-wide management, there is a need to redesign XYZ’s backup architectureand strategy to meet its business objectives. An overview of the proposed solution isgiven, followed by a detailed acco...

Figure 92 Proposed XYZ backup topology • The Cell Manager maintains the Catalog Database (CDB). This provides aminimum of 20 days of file and directory detail on the current database. Estimating the size of the IDB The Internal Database Capacity Planning Tool was used to estimate the size of theIDB ...

Figure 93 Input parameters The results are shown in Figure 94 on page 306. In one year, the database is expected to grow to approximately 419.75 MB. Figure 94 Results • Hardware • Network All systems should be on the same 100TX network for maximum performance.This network has a sustained data transf...

The Data Protector Catalog Database is approximately 0.4 GB in size. It isbacked up locally to an HP StorageWorks DAT24 autoloader, which has asustained data transfer rate of 2 MB/s or 7 GB/h. Data Protector by defaultchecks the integrity of the database before the database is backed up. It takesles...

Table 18 on page 309 shows the size and time requirements for these full backups as of today, as well as the five year projection. Table 18 Remote full backups to the HP DLT 4115 library Projected Data/BackupTime Current Data/Backup Time Department 70 GB / 7 h 23 GB / 3 h English 67 GB / 7 h 22 GB /...

1. Identifies the media needed for restore. 2. Brings the media from a vault, enters the media in the HP StorageWorksDLT 4115w Library or other device and then scans the media. 3. Selects the specific object to be restored using the List From Media option,if the media are not in the IDB. 4. Performs...

Three departments at ABC Cape Town use the Microsoft SQL database to store theirdata and the company uses Microsoft Exchange Server for mailing services. Thesedatabases, currently containing 11 GB and 15 GB of data, respectively, are backedup to 2 HP StorageWorks DAT24 autoloaders. The system archit...

Backup media are denoted by the name of the department, the name of the serverand first and last dates on which backups were performed on the media. At the endof each quarter, media are sent for storage to a central offsite location. Problems with current solution The current backup solution has the...

Maximum downtime Type of data 6 hours Company resource data 1 day Project data 2 days Personal data This recovery time mainly consists of the time needed to access the media andthe time required to actually restore data to a disk. • How long specific types of data should be kept Table 21 on page 316...

Data (in GB) Location 22 ABC Pretoria 16 ABC Durban Plans for future growth of the amount of dataABC plans to grow at 15 to 20% per year. The amount of data to be backed upis expected to grow accordingly. This has implications not only on the amount oftime it takes to run backups and backup devices ...

Configure cell A as the MoM cell for the ABC Cape Town environment, cell D as theMoM cell for the ABC Pretoria environment, and cell F as the MoM cell for the ABCDurban environment. This configuration is depicted in Figure 96 on page 318. Figure 96 ABC enterprise environment The Cell Managers and Ma...

The two cells at the ABC Durban MoM environment should also share a CentralizedMedia Management Database. This should be configured on the MoM of cell F toenable the sharing of the HP StorageWorks DLT 4115w Library between the cells. The following is a detailed account of the proposed solution: Prop...

Figure 97 ABC Cape Town enterprise backup environment The two cells at the ABC Pretoria MoM environment should share a CentralizedMedia Management Database. This should be configured on the MoM of cell D.The purpose of using the CMMDB is to enable the sharing of the HP StorageWorksDLT 4115w Library ...

catalog protection (3 weeks), number of full backups per week (1), and numberof incremental backups per week (5). Figure 98 Input parameters The results are shown in Figure 99 on page 322. In one year, the database is expected to grow to approximately 667.47 MB. Figure 99 Results You can also use th...

library has two drives and a sustained data transfer rate of 6 MB/s (2 x 3 MB/s),or 21 GB/h. Therefore, data is backed up to this library in up to 5 hours . The projected amount of data in five years, 185 GB, would be backed up in 9 to 10 hour s, which would still be within the acceptable 12 hours. ...

Description Location Media pool name IDB Pretoria P_DB_Pool HP StorageWorks DLT 4115wLibrary Durban D_DLT_Pool HP StorageWorks DAT24autoloaders Durban D_DAT_Pool IDB Durban D_DB_Pool • Backup Specifications Configure backup specifications as follows: • DB_A...G Backup specifications for each of the ...

Full Incr1 Incr1 Incr1 Incr1 Incr1 Cell C • SERVERS_A...G Backup specifications for the company’s servers to prepare for disasterrecovery. Each time a new server is installed, or an existing server is upgraded,this backup specification is updated. Schedule the backup specifications suchthat Data Pro...

Time Backup day Description Cell Name 23:00 Sunday Servers C SERVERS_C 03:00 Saturday IDB D DB_D 03:00 Saturday IDB E DB_E 23:00 Friday Servers D SERVERS_D 23:00 Saturday Servers E SERVERS_E 0:00 Saturday User data D USERS_D 0:00 Sunday User data E USERS_E 03:00 Saturday IDB F DB_F 03:00 Saturday ID...

B Further information In this appendix This appendix provides additional information about some of the aspects of DataProtector concepts, including backup generations, examples of automated mediacopying, and internationalization. Backup generations Data Protector provides a time/date related protect...

Figure 100 Backup generations You configure Data Protector to automatically maintain the desired number of backupgenerations by selecting the appropriate data and catalog protection durations, andscheduling for unattended backups, both full and incremental. For example, to keep three backup generati...

Example 1: automated media copying of filesystem backups Your company has a MoM environment with two cells, each containing 150 computersystems (servers and workstations). On average, each system has 10 GB of data,which means that you have 3000 GB of data that you want to back up. You want to have d...

Figure 101 Incr1 backup and automated media copying Full backup Configuring backups You schedule your weekly full backup on Friday at 6 PM. The data protection is setto 8 weeks. You have 3000 GB of data to back up. The data is divided amongbackup specifications in the following way: • BackupSpec1 (D...

Figure 102 Full backup and automated media copying You schedule your monthly full backup on Sunday at 6 AM. This backup is intendedfor archiving purposes, so it is normally not copied. Figure 103 on page 338 presents an overview of the time when the devices are busy. Note that this is a rough overvi...

Figure 103 Overview of backup and automated media copy sessions Example 2: automated media copying of Oracle database backups Your company has an Oracle database of the size of 500 GB. You want to performa full backup of the database daily. The backup must be performed outside thecompany's working h...

Full backup Configuring backups You schedule your daily full backup each day from Monday to Friday at 6 PM. Thedata protection is set to 4 weeks. You have 500 GB of data to back up. You useDrive 1, Drive 2, Drive 3, and Drive 4. The backup uses 4 media and is completedin approximately 2 hours. Confi...

Figure 105 Overview of backup and automated media copy sessions Internationalization Internationalization is a way to design and implement a software product so that theproduct interacts with the user's native language and according to the user's localesettings (currency, time, date, number, and oth...

File name handling Handling file names in a heterogeneous environment (different operating systemswith different local settings, all in one cell) is a significant challenge. Data Protectorhandles file names under various local settings (such as language, territory, andcharacter sets) that were in ef...

UNIX incompatibility example Three users working on a Solaris system without Data Protector installed, each usinga different character set, create files on the same filesystem outside the ASCII characterrange. If the users then use the ls command to display the files they created as well as those cr...

Glossary access rights See user rights . ACSLS (StorageTek specific term) The Automated Cartridge SystemLibrary Server (ACSLS) software that manages the AutomatedCartridge System (ACS). Active Directory (Windows specific term) The directory service in a Windowsnetwork. It contains information about ...

Index A adding data to media during backups , 148 ADIC (EMASS/GRAU) AML , 162 admin user group , 185 alarms , 208 alternative disaster recovery methods , 131 operating system vendors , 131 third-party tools , 131 ANSI X3.27 labels , 146 any-to-any connectivity , 171 Application Agents , 42 Applicati...