Commvault Glossary

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Commvault Glossary
2013-02-26 16:35:36

Commvault Glossary of Terms
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  1. activity control
    A feature which can be used to enable or disable operations at the various levels in the CommCell hierarchy.
  2. active media
    The currently assigned media within each media group to which data is written during a backup. This media is also seen with an Active status from the CommCell Console.
  3. agent
    A software module in the system that performs data protection operations.
  4. alternate data path
    Combination of MediaAgent, Library , Drive Pool and Scratch Pool which are added to a Storage Policy as an alternate data path, so that an alternate resource can be used for data protection operations, when a component in the default data path is not available.
  5. appendable media
    A media with free space available for writing data.
  6. archive file
    Contains data from a single backup of a single subclient.
  7. Assigned Media pool
    A logical repository for all used media in the library, located both inside or outside the library.
  8. authoritative restore
    A System State restore that causes restored data to be authoritative in relation to its replication partners. Once the data is restored, it is propagated to other domain controllers and overwrites any newer data on those computers.
  9. automatic update
    A feature which is used to download and install the necessary updates to the computers in the CommCell.
  10. auxiliary copy operation
    Copies the backup data that was created on a primary copy to all auxiliary copies within the storage policy.
  11. backup filters
    A feature used to exclude specified data from a backup.
  12. backup series
    All of the archive files on a given backup media originating from the same subclient.
  13. backup set
    A group of subclients which includes all of the data backed up by the iDataAgent.
  14. basic retention rule
    A feature used to define the retention rules for data in days and cycles. (See also: extended retention rules)
  15. baseline
    For CDR, the initial transfer of data from the source to the destination.
  16. blind library
    A library without a barcode reader. (See also: sighted library)
  17. business continuance volume (BCV)
    A mirror-image of an active production volume; obtained through split-mirror technology, a BCV can be created and used without affecting the production volume.
  18. client compression
    A feature that compresses data on a client computer before sending the data to backup media.
  19. Client Computer Groups
    A logical grouping of client computers in the CommCell Console in which selected options can apply to all member clients.
  20. Cleaning Media pool
    A logical repository for cleaning media in the library.
  21. client computer
    A computer in a CommCell that has agent software installed on it.
  22. Collect File
    A file which records the path and name of each scanned file that is to be backed up or archived.
  23. CommCell
    The basic organizational unit of a data management system. A CommCell contains one CommServe StorageManager, at least one client, and at least one MediaAgent.
  24. CommCell administrator
    A person having overall responsibility for the operation and maintenance of a CommCell.
  25. CommCell Browser
    The window in the CommCell Console which displays all the objects in the CommCell in a tree structure.
  26. CommCell Console
    The graphical user interface used to access and manage the system.
  27. CommCell Explorer
    The software package that provides a way to query information on the CommCell components directly from the SQL database.
  28. CommCell user
    Any user who is able to protect and recover data, and perform administration operations using the system.
  29. CommCell user group
    A logical entity which serve as containers to which capabilities, CommCell objects and users are assigned.
  30. CommServe
    The software module that communicates with all clients and MediaAgents and coordinates operations (data protection, data recovery, and
  31. administration operations, job management, event management, etc.) within a CommCell. There is only one CommServe per CommCell.
  32. CommServe Database Engine
    A SQL server database in the CommServe that contains all information relating to the CommCell. See System Requirements - CommServe for specifications on CommServe Database Engine.
  33. Common Technology Engine
    Consists of the CommServe StorageManager and the MediaAgent software modules that provide the necessary tools to manage and administer the Client Agents and also manage the storage media associated with the CommCell.
  34. Compliance Archiving
    An operation which moves data from a Journaling Mailbox on the client computer to secondary storage media, for the purpose of complying with legal or business regulations.
  35. Consistent Recovery Point
    Snapshots created by QSnap, either of a QR Volume (when used with Quick Recovery Agent) or a Destination Path (when used with ContinuousDataReplicator) which represent a point-in-time on the source computer. (See also, Recovery Point.)
  36. Content File
    See On Demand Backup Set / Archive Set
  37. Content Indexing
    A feature used to search archived data of supported file and message types by its content.
  38. copy (storage policy copy)
    The storage policy entity through which primary backup data is copied to secondary media.
  39. CopyBack
    A Quick Recovery Agent feature which copies the data from the specified QR Volume(s) to the selected destination volume(s).
  40. data aging
    Operation that logically deletes expired data based on storage policy copy retention.
  41. data compression
    A method of reducing the amount of space needed for storing data. (See also: Client compression, Hardware Compression)
  42. data encryption
    The software uses asymmetrical encryption. The plaintext is encrypted with one key (called public), and can be decrypted only with the other key (called private). The software uses public key encryption to avoid prompting for a pass-phrase each time a backup runs.
  43. data multiplexing
    A feature that allows data from multiple clients/subclients to be written to the same drive/media, when a set of data protection operations are running concurrently.
  44. data stream
    A data channel through which client data flows to a backup media.
  45. Data Verification
    A feature that checks the stored data to see that it is valid for recovery and auxiliary copy operations.
  46. DeConfigure
    A feature which can be used to release the license and clean up entries from the CommServe database, when the software uninstall process fails.
  47. delta backup
    See incremental backup.
  48. differential backup
    A backup of all of the data of a subclient that has changed since the subclient's last full backup.
  49. Directive File
    See On Demand Backup Set / Archive Set.
  50. Disaster Recovery
    The planning for and/or the implementation of a strategy to respond to such failures as a total infrastructure loss, or the failure of computers (CommServe, MediaAgent, client, or application), networks, storage hardware, or media. A Disaster Recovery strategy typically involves the creation and maintenance of a secure Disaster Recovery site, and the day-to-day tasks of running regular Disaster Recovery backups.
  51. Disaster Recovery Backup
    Backs up meta data and Windows registry data during two phases. Phase I backs up the data to a local or network path and Phase II backs up the data to media using an Disaster Recovery Backup storage policy. This data can then be restored using the CommServe Recovery Tool.
  52. Disaster Recovery Backup storage policy
    A storage policy used to store metadata to media. This metadata stores information about the CommCell and the backed up data. In case of a system failure, Disaster Recovery Backup data can be retrieved using this storage policy.
  53. drive pool
    Logical entities used to facilitate the sharing of a library’s drives between multiple MediaAgents. (See also: master drive pool)
  54. Erase Backup/Archived Data
    A feature which marks data as unrecoverable.
  55. Event Viewer
    The window in the CommCell Console which displays the events associated with all activities in the CommCell.
  56. Exported Media pool
    A logical repository for all exported media in the library.
  57. exportable media
    A media which can be exported as it is not required for an Auxiliary Copy operation or prevented from being exported by the user .
  58. extended retention rules
    A feature used to define an extended retention time and days exceeding basic retention rules. (See also: basic retention rules)
  59. EZ Backup and EZ Restore
    A feature used to back up files and directories from the CommCell Console and restore them as needed, without requiring expert-level knowledge or understanding of advanced data management concepts.
  60. Fan-in replication
    Replication of data from multiple sources to a single destination.
  61. Fan-out replication
    Replication of data from one source to a multiple destinations.
  62. File system Snapshots
    A built-in feature of the Unix operating system which can be used to create point-in-time snapshots of volumes.
  63. Foreign Media pool
    A logical repository for media used by other applications and CommCells. This media pool is useful to manage such media using VaultTracker.
  64. full backup
    A backup of all of the data of a subclient. A full backup provides the baseline for subsequent incremental and differential backups. (Known as a level 0 backup in Oracle.)
  65. Generic Enabler
    A standard feature of the Quick Recovery Agent to support other hardware snapshots.
  66. Global Filters
    A feature which allows the definition of files/folder exclusions for data protection operations and attach them to any number of subclients within the CommCell.
  67. GridStor
    See Alternate Data Path
  68. Hardware compression
    A feature that uses the compression facility in the hardware devices (library/drive) to compress the data before it is stored in the backup media.
  69. in place restore
    Data is restored to the original location (i.e., the same computer and path) from which it was backed up. (See also: out of place restore)
  70. incremental backup
    A backup of all of the data of a subclient that has changed since the subclient's last full, incremental, or differential backup.
  71. index cache
    A storage location maintained by a MediaAgent which contains the index data generated by the system when backups are conducted.
  72. instance
    The level in the CommCell Browser tree that represents the database that needs to be backed up. All subclients for the database are defined under an instance.
  73. Intelligent DataAgent ( iDataAgent)
    A software module that backs up and restores data of a particular application type on a host computer system.
  74. Job Controller
    The window in the CommCell Console which can be used to monitor and manage the active jobs in the CommCell.
  75. jump start server method
    A full system restore method that allows the downed server to boot from a jump start server (i.e., the boot net command is given from the boot console).
  76. Legal Hold
    The process of identifying and segregating relevant documents found during a data discovery operation and preserving them in a physical repository for long term retention.
  77. Legal Hold Set
    A special type of On Demand Backup Set that is used for Legal Hold purposes.
  78. library
    A storage unit that contains a robotic device, one or more media drives, and multiple media cartridges for extended storage capacity. Within the CommCell Console all storage devices are referred to as libraries.
  79. Library Controller
    The software module which manages the hardware operations of the arm changer within a storage device (e.g., mounting, unmounting, importing, and exporting media).
  80. List Media
    A feature which can be used to predict media that is required for a data recovery operation.
  81. logging mode
    Transaction logging setting for Domino server.
  82. magnetic library
    Configuration where DAS, NAS, or SAN disk is configured as a library to backup data to disk.
  83. master drive pool
    A logical entity that is used to facilitate the sharing of a library’s drives between multiple MediaAgents. (See also: drive pools)
  84. MediaAgent
    The software module which transmits data between clients and backup media and manages the data stored in the media.
  85. Media Explorer
    A tool used to quickly view and recover data secured by data protection operations from any media when the system has been rendered unusable or inaccessible.
  86. Media by Groups
    A logical grouping for removable media in the CommCell Browser, which includes one or more of the following pools: Scratch, Cleaning Media, Retired Media, Overwrite Protect Media, Foreign Media and Assigned Media.
  87. Media by Location
    A logical grouping for all removable media in the CommCell Browser. Media By Groups is in-turn subdivided into Media in Library and Exported Media.
  88. Media Prediction
    See List Media.
  89. migration archiving
    An operation which moves data from a client computer to secondary storage media, for the purpose of reducing costs associated with backing up and maintaining the data on primary storage.
  90. miniroot method
    A full system restore method that requires the new root file system to be located on a different volume or partition than that for the original installation.
  91. mount path
    The location on a disk where backup data is stored. A magnetic library can have multiple mount paths.
  92. Network Agent
    A feature which can be used to increase the data transfer throughput from a client during data protection operations.
  93. Network bandwidth throttling
    A feature which can be used to control the amount of data transferred in a network during a data protection operation.
  94. Network Data Management Protocol (NDMP)
    An initiative from Network Appliance and IntelliGuard Software to develop an open standard for backing up data in a heterogeneous environment. NDMP uses a common data format which is written to and read from drivers for the specific disk and tape devices.
  95. non-authoritative restore
    A System-State restore that propagates newer data on the network to the restored computer, updating it with newer information.
  96. non-preemptible jobs
    A job that cannot be interrupted by the Job Manager service or be suspended by a user. (See also: preemptible jobs)
  97. On Demand Backup Set / Archive Set
    A logical entity that allows data to be backed up or archived through a Directive File specified at the point of backup/archive. The Directive File contains the fully qualified path(s) to one or more Content Files which contain the fully qualified path(s) to one or more files, links and/or devices to be backed up. For some agents a single Content File is used in place of the Directive File.
  98. one-pass restore
    A type of restore that reads a backup tape once to gather the information and data necessary for restore.
  99. operation window
    A feature that excludes operations from running during certain time periods of the day.
  100. Orphan Files
    Files that are in the destination directory, but not the source directory.
  101. out of place restore
    Data is restored to a new location (i.e., different from the original location of the backup). (See also: in place restore)
  102. Overwrite Protect Media pool
    A repository which can used to preserve media (or the data in the media) and prevent the media from being overwritten.
  103. pass-phrase
    A phrase selected by the user to protect a private asymmetrical key on the CommServe or on media when using data encryption.
  104. pass-phrase export files
    Files with scrambled pass-phrase used to perform unattended data recovery operations of encrypted data that requires a pass-phrase.
  105. persistent recovery
    A type of stub recovery job that opens a common pipeline to recover archived data from magnetic media (also from tape for File Share Archiver). The job remains persistent to allow multiple stub recall requests to be submitted as a group, which reduces the time to open a pipeline for each stub recall request.
  106. preemptible jobs
    A job that can be interrupted by the Job Manager Service or be suspended by a user, and then be restarted. (See also: non-preemptible jobs)
  107. primary copy
    The logical entity in a storage policy through which all data protection operations are conducted.
  108. primary restore
    Used when all domain controllers in the domain are lost and the domain is rebuilt from the backup.
  109. Remote install/upgrade
    A UNIX-based install/upgrade method used to install/upgrade the software on multiple UNIX computers from a remote UNIX computer.
  110. QR Volume
    A block level copy of a specified source volume for use in Quick Recovery and CopyBack operations.
  111. QSnap
    A combined software-snapshot engine and block filter driver. This preserves the original point-in-time data, ensuring an accurate snapshot for
  112. QR Volume creation and/or data protection operations. QSnap replaces the CSS software, cxbf block filter driver, and snap driver used in previous versions of the software.
  113. qtree
    A special subdirectory of the root directory in a volume with special attributes such as security style, disk space and file limits.
  114. Recovery Point
    Snapshots created by QSnap of a Destination Path; these do not represent a point-in-time on the source computer. (See also, Consistent Recovery Point.)
  115. Replication Log
    Files on the source computer that log all file write activity, which are then transferred to and replayed on the destination computer.
  116. Replication Log Replay
    The extraction of all new or changed data from the Replication Logs, ensuring that the destination remains a real-time replica of the source.
  117. Replication Log Transfer
    The copying of the Replication Log from the source to the destination.
  118. Replication Pair
    A logical entity that defines a data replication source and destination.
  119. Replication Set
    A group of Replication Pairs.
  120. restore by jobs
    A feature which can be used to restore data associated with a specific data protection job.
  121. restore filter
    A feature used to exclude specified data from being restored.
  122. retention period
    The period of time for which a particular set of backup data has not exceeded its retention criteria. Once the retention period has elapsed and the data aging has been run, the data becomes unavailable for restores.
  123. Retired Media pool
    A logical repository for all retired media in the library.
  124. schedule policy
    A feature used to associate a schedule or groups of schedules and attach it to any number of clients/backup sets/subclients or storage policies within the CommCell.
  125. scratch pool
    A repository for new or pruned media which are available for use.
  126. selective copy
    The logical entity in a storage policy used by an auxiliary copy operation to copy full backups that meet the specified criteria, from the primary copy.
  127. sighted library
    A library with a barcode reader. (See also: blind library)
  128. silent install/upgrade
    A UNIX-based install/upgrade method used to enter responses to installation prompts directly into an auto-response file to install software faster and unattended.
  129. single-instancing of data
    A data storage approach that stores only a single copy of a file in a pool of storage. For example, content addressable storage (CAS) systems. The software supports this operation by writing the data in a single-instanceable format for appliances that support single instancing of data.
  130. Smart Re-Sync
    The seamless resumption of Replication Log Replay after an interruption in replication activity.
  131. Snapshot Volume Unit (SVU)
    A subclient content template, containing a set of specified volumes, and defining subclient content and configuration in a way that is common to a given set of Agents used with Recovery Director.
  132. stand-alone drive
    Any media device consisting of a single drive unit (e.g., tape drive). Storage media must be manually inserted into and removed from these devices, which generally lack media storage capability.
  133. storage policy
    A logical entity through which data from a subclient is backed up. A storage policy consists of one or more copies which associate data with particular physical media.
  134. storage policy copy
    A logical entity which provides the path to the backup data and also provides the facility to define the retention period for the data.
  135. stub recovery
    Any action that causes an open and read on an object (e.g., message or file) that has been archived, which invokes a recovery operation (not initiated through the CommCell Console) for that object.
  136. subclient
    The logical entity that uniquely defines a unit of data on a client computer.
  137. subclient policy
    A logical entity through which configuration of multiple file system subclients within a CommCell can be accomplished from a centralized template. A subclient policy consists of one or more subclient templates which contain a common configuration that is applied to target subclients within a CommCell.
  138. synchronous copy
    The logical entity in a storage policy used by auxiliary copy operation to copy backup data occurring on or after a selected date on the primary copy
  139. synthetic full backup
    An operation that combines the most recent full backup of the selected data with all subsequent incremental/differential backups and stores the result in a single archive file.
  140. Target System
    A type of securable object within the QSM Domain, corresponding to a file server or database instance, for which permissions can be granted or denied to users and user groups. Target systems include: NAS file servers, NetWare servers and Oracle instances.
  141. User
    Performs software functions allowed by its member user group based on the capabilities of the user group.
  142. User Group
    A user group is a logical entity through which capabilities are assigned. A user group can either administer the CommNet Server, CommCell(s), QSMCell(s), or a combination of all three.
  143. Virtualization
    The virtualization solution makes it possible for enterprises to overcome the complex data management challenges and reduce costs resulting from exponential data growth and sprawling virtualized storage environments.