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The terms in this glossary are defined as they pertain to the
Tivoli Storage Manager library. If you do not find the term you
are looking for, refer to other IBM glossaries at this Web site: http://www.ibm.com/ibm/terminology/
This glossary may include terms and definitions from:
- The American National Standard Dictionary for
Information Systems, ANSI X3.172-1990, copyright
(ANSI). Copies may be purchased from the American
National Standards Institute, 11 West 42nd Street, New
York 10036.
- The Information Technology Vocabulary, developed
by Subcommittee 1, Joint Technical Committee 1, of the
International Organization for Standardization and the
International Electrotechnical Commission (ISO/IEC
JTC2/SC1).
- absolute mode
- A backup copy group mode that specifies that a
file is considered for incremental backup even if the
file has not changed since the last backup. See also mode.
Contrast with modified.
- access mode
- An attribute of a storage pool or a storage volume that specifies whether
the server can write to or read from the storage pool or storage
volume. The access mode can be read-write, read-only, or
unavailable. Volumes in primary storage pools can also
have an access mode of destroyed. Volumes in copy storage
pools can also have an access mode of offsite.
- activate
- To validate the contents of a policy set
and make it the active policy set.
- active policy set
- The activated policy set that contains the policy rules currently
in use by all client nodes assigned to the policy domain. See also policy domain
and policy
set.
- active version
- The most recent backup copy of a file stored by Tivoli
Storage Manager. The active version of a file cannot be deleted
until a backup process detects that the user has either
replaced the file with a newer version, or has deleted
the file from the workstation. Contrast with inactive
version.
- activity log
- A log that records normal activity messages generated by
the server. These messages include information about
server and client operations, such as the start time of
sessions or device I/O errors. Each message includes a
message ID, date and time stamp, and a text description.
The number of days to retain messages in the activity log
can be specified.
- administrative
client
- A program that runs on a file server, workstation, or
mainframe that administrators use to control and
monitor the Tivoli Storage Manager server. Contrast with backup-archive client.
- administrative
command schedule
- A database record that describes the planned processing
of an administrative command during a specific time
period. See also client schedule.
- administrative
privilege class
- A level of authority granted to an administrator of Tivoli Storage Manager. The privilege class determines which tasks the
administrator can perform. For example, an administrator
with system privilege class can perform any
administrative task. See system privilege class,
policy privilege class, storage privilege class, operator
privilege class, and analyst privilege class.
- administrative
session
- A period of time in which an administrator user ID
communicates with a server to perform administrative
tasks. Contrast with client node session.
- administrator
- A user who has been registered to the server.
Administrators can be authorized to one or more of the
following administrative privilege classes: system,
policy, storage, operator, or analyst. Administrators can
use the administrative commands and queries allowed by
their privileges.
- aggregate
- An object, stored in one or more storage pools, consisting
of a group of logical files packaged together. See logical
file and physical file.
- analyst
privilege class
- A privilege class that allows an
administrator to reset statistics.
- application client
- One of the Tivoli Storage Manager data protection programs installed on
a system to protect an application. The Tivoli Storage Manager server provides backup services to
an application client.
- archive
- To copy one or more files to
a storage pool for long-term storage. Archived files can include descriptive information and
can be
retrieved by archive date, by file name, or by
description. Contrast with retrieve.
- archive copy
- A file that has been archived to server storage.
- archive copy group
- A policy object containing attributes that control the
generation, destination, and expiration of archived files.
An archive copy group belongs to a management class.
- archive
retention grace period
- The number of days that Tivoli Storage Manager retains an
archived file when the server is unable to rebind the file
to an appropriate management class.
- assigned capacity
- The portion of available space that can be used to store
database or recovery log information. See also available
space.
- association
- (1) The defined relationship between a client node and a
client schedule. An association identifies the name of a
schedule, the name of the policy domain to which the
schedule belongs, and the name of a client node that
performs scheduled operations.
- (2) On a configuration manager, the defined relationship
between a profile and an object such as a policy domain.
Profile associations define the configuration information
that will be distributed to a managed server when it
subscribes to the profile.
- audit
- To check for logical inconsistencies
between information that the server has and the actual
condition of the system. Tivoli Storage Manager can audit volumes, the database, libraries,
and licenses. For example, when Tivoli
Storage Manager audits a volume, the server checks for inconsistencies between
information about backed-up or archived files stored in
the database and the actual data associated with each backup
version or archive copy in server storage.
- authentication
- The process of checking a user's password before allowing
that user access to the server. Authentication can be
turned on or off by an administrator with system
privilege.
- authority
- The right granted to a user to perform tasks with Tivoli
Storage Manager servers and clients. See administrative
privilege class.
- autochanger
- A small multislot tape device that
automatically puts tape cartridges into tape drives. See also library.
- available space
- The amount of space, in megabytes, that is available to
the database or the recovery log. This space can be used to
extend the capacity of the database or the recovery log, or
to provide sufficient free space before a volume is
deleted from the database or the recovery log.
- back up
- To copy information to another location to ensure against loss of
data. In Tivoli Storage Manager, you can back up user
files, the Tivoli Storage Manager database, and storage
pools. Contrast with restore. See also database backup
series and incremental backup.
- backup-archive
client
- A program that runs on a workstation or file server and
provides a means for users to back up, archive, restore,
and retrieve files. Contrast with administrative
client.
- backup copy group
- A policy object containing attributes that control the
generation, destination, and expiration of backup versions of files.
A backup copy group belongs to a management class.
- backup
retention grace period
- The number of days that Tivoli Storage Manager retains a
backup version after the server is unable to rebind the
file to an appropriate management class.
- backup set
- A portable, consolidated group of active backup versions of files,
generated for a backup-archive client.
- backup version
- A file that a user backed up to server
storage. More than one backup version of a
file can exist in server storage, but only one backup version is the
active version. See active version and inactive
version.
- binding
- The process of associating a file with a management class
name. See rebinding.
- buffer pool
- Temporary space used by the server to hold database or
recovery log pages. See database buffer pool and recovery
log buffer pool.
- cache
- The process of leaving a duplicate copy on random access
media when the server migrates a file to another storage
pool in the hierarchy.
- central scheduler
- A function that allows an administrator to schedule
client operations and administrative commands. The
operations can be scheduled to occur periodically or on a
specific date. See client schedule and administrative
command schedule.
- client
- A program running on a PC, workstation, file server, LAN
server, or mainframe that requests services of another
program, called the server. The following types of clients can obtain
services from a Tivoli Storage Manager server: administrative client,
application client, API client, backup-archive client, and HSM client (also
known as space manager client).
- client domain
- The set of drives, file systems, or volumes that the user selects to
back up or archive using the
backup-archive client.
- client migration
- The process of copying a file from a client node to server storage and replacing the file
with a stub file on the client node. The space management attributes
in the management class control this migration. See also space management.
- client node
- A file server or workstation on which the backup-archive
client program has been installed, and which has been
registered to the server.
- client node session
- A period of time in which a client node communicates with a
server to perform backup, restore, archive, retrieve,
migrate, or recall requests. Contrast with administrative
session.
- client options file
- A file that a client can change, containing a set of
processing options that identify the server,
communication method, and options for backup, archive,
hierarchical storage management, and scheduling. Also
called the dsm.opt file.
- client-polling scheduling mode
- A client/server communication technique where the client
queries the server for work. Contrast with server-prompted scheduling
mode.
- client schedule
- A database record that describes the planned processing
of a client operation during a specific time period. The
client operation can be a backup, archive, restore, or
retrieve operation, a client operating system command, or
a macro. See also administrative command schedule.
- client
system options file
- A file, used on UNIX clients, containing a set of
processing options that identify the Tivoli Storage
Manager servers to be contacted for services. This file
also specifies communication methods and options for
backup, archive, hierarchical storage management, and
scheduling. Also called the dsm.sys file. See also
client user options file.
- client user
options file
- A user-created file, used on UNIX clients, containing a
set of processing options that identify the server,
communication method, backup and archive options, space
management options, and scheduling options. Also called
the dsm.opt file. See also client system
options file.
- closed registration
- A registration process in which only an administrator can
register workstations as client nodes with the server.
Contrast with open registration.
- collocation
- The process of keeping all data belonging to a
single client node or a single client file space on a
minimal number of sequential-access volumes within
a storage pool. Collocation can reduce the number of
volumes that must be accessed when a large amount of data
must be restored.
- compression
- The process of saving storage space by eliminating empty
fields or unnecessary data in a file. In Tivoli Storage
Manager, compression can occur at a workstation before
files are backed up or archived to server storage. On
some types of tape drives, hardware compression can be
used.
- configuration
manager
- One Tivoli Storage Manager server that distributes
configuration information to other Tivoli Storage Manager
servers (called managed servers) via profiles.
Configuration information can include policy and
schedules. See managed server and profile.
- copy group
- A policy object whose attributes control how backup versions or archive
copies are generated, where backup versions or archive copies are
initially located, and when backup versions or archive copies
expire. A copy group belongs to a management class.
See also archive copy group, backup copy group, backup version, and
management class.
- copy storage pool
- A named set of volumes that contains copies of files that
reside in primary storage pools. Copy storage pools are
used only to back up the data stored in primary storage
pools. A copy storage pool cannot be a destination for a
backup copy group, an archive copy group, or a management
class (for space-managed files). See primary storage
pool and destination.
- damaged file
- A physical file for which Tivoli Storage Manager has
detected read errors.
- database
- A collection of information about all objects managed by
the server, including policy management objects, users
and administrators, and client nodes.
- database backup
series
- One full backup of the server database, plus up to 32
incremental backups made since that full backup. Each
full backup that is run starts a new database backup
series. A backup series is identified with a number.
- database backup
trigger
- A set of criteria that defines when and how database
backups are run automatically. The criteria determine how
often the backup is run, whether the backup is a full or
incremental backup, and where the backup is stored.
- database buffer
pool
- Storage that is used as a cache to allow database pages
to remain in memory for long periods of time, so that the
server can make continuous updates to pages without
requiring input or output (I/O) operations from external
storage.
- database snapshot
- A complete backup of the entire Tivoli Storage Manager database to media that can be taken off-site.
When a database snapshot is created, the current database backup series is
not interrupted. A database snapshot cannot have incremental database backups
associated with it. See also database backup series. Contrast with full backup.
- data mover
- A device, defined to Tivoli Storage Manager, that moves data on behalf of the
server.
A NAS
file server can be a data mover.
- default
management class
- A management class assigned to a policy set that the server uses to
manage backed-up or archived files when a user
does not specify a management class for a file.
- desktop client
- The group of clients supported by Tivoli Storage Manager
that includes clients on Windows, Apple, and
Novell NetWare operating systems.
- destination
- A copy group or management class attribute that specifies
the primary storage pool to which a client file will be
backed up, archived, or migrated.
- device class
- A named set of characteristics applied to a group of storage devices. Each device class has a unique name and
represents a device type of disk, file, optical disk, or
tape.
- device
configuration file
- A file that contains information about defined device
classes, and, on some Tivoli Storage Manager servers,
defined libraries and drives. The file can be created by
using a Tivoli Storage Manager administrative command or by using an
option in the server options file. The information is a
copy of the device configuration information in the
Tivoli Storage Manager database.
- disaster
recovery manager (DRM)
- A function in Tivoli Storage Manager that assists in preparing and later
using a disaster recovery plan file for the Tivoli Storage Manager server.
- disaster
recovery plan
- A file created by the disaster recovery manager (DRM) that contains information about how to recover
computer systems if a disaster occurs and scripts that can be run to
perform some recovery tasks. The file includes information about the software and hardware used
by the Tivoli Storage Manager server, and the location of
recovery media.
- domain
- See policy domain or client domain.
- DRM
- A short name for disaster recovery manager.
- dsm.opt file
- See client options file and client user options
file.
- dsmserv.opt file
- See server options file.
- dsm.sys file
- See client system options file.
- dynamic
- A value for serialization that specifies that Tivoli Storage Manager accepts the first attempt to back
up or archive a file regardless of whether the file is
modified during the backup or archive process. See also serialization.
Contrast with shared dynamic, shared static,
and static.
- enterprise
configuration
- A method of setting up Tivoli Storage Manager servers so that the
administrator can distribute the configuration of one of the servers to
the other servers, using
server-to-server communication. See configuration
manager, managed server, profile, and subscription.
- enterprise logging
- The sending of events from Tivoli Storage Manager servers
to a designated event server. The event server routes the
events to designated receivers, such as to a user exit.
See also event.
- estimated capacity
- The available space, in megabytes, of a storage pool.
- event
- (1) An administrative command or a client operation that
is scheduled to be run using Tivoli Storage Manager
scheduling.
- (2) A message that a Tivoli Storage Manager server or
client issues. Messages can be logged using Tivoli
Storage Manager event logging.
- event record
- A database record that describes actual status and
results for events.
- event server
- A server to which other servers can send events for
logging. The event server routes the events to any
receivers that are enabled for the sending server's
events.
- exclude
- To identify files that you do not want to include in a specific client
operation, such as a backup or archive. You identify the files in an
include-exclude list.
- exclude-include
list
- See include-exclude list.
- expiration
- The process by which files are identified for deletion
because their expiration date or retention period has
passed. Backed-up or archived files are marked expired by
Tivoli Storage Manager based on the criteria defined in
the backup or archive copy group.
- expiration date
- On some Tivoli Storage Manager servers, a device class attribute
used to notify tape management systems of the date when
Tivoli Storage Manager no longer needs a tape volume. The
date is placed in the tape label so that the tape
management system does not overwrite the information on
the tape volume before the expiration date.
- export
- To copy administrator definitions, client
node definitions, policy definitions, server control
information or file data to external media, or directly to another
server. Used to move or copy information between servers.
- extend
- To increase the portion of available space
that can be used to store database or recovery log
information. Contrast with reduce.
- file space
- A logical space in Tivoli Storage Manager server storage that contains a
group of files. For clients on Windows systems, a
file space is a logical partition that is identified by a
volume label. For clients on UNIX systems, a file space is a logical
space that contains a group of files backed up or archived from the same
file system, or part of a file system that stems from a virtual
mount point. Clients can restore, retrieve, or delete
their file spaces from Tivoli Storage Manager server
storage. Tivoli Storage Manager does not necessarily
store all the files from a single file space together,
but can identify all the files in server storage that
came from a single file space.
- file space ID (FSID)
- A unique numeric identifier that the server assigns
to a file space when it is stored in server storage.
- frequency
- A copy group attribute that specifies the minimum
interval, in days, between incremental backups.
- FSID
- See file space ID.
- full backup
- The process of backing up the entire server database. A full backup begins a new database backup
series. See also database
backup series and incremental backup. Contrast with database
snapshot.
- fuzzy copy
- A backup version or archive copy of a file that might not
accurately reflect the original content of the file because
Tivoli Storage Manager backed up or archived the file
while the file was being modified.
- hierarchical
storage management (HSM) client
- The Tivoli Storage Manager for Space Management program that runs on workstations to allow users to
maintain free space on their workstations by migrating
and recalling files to and from Tivoli Storage Manager
storage. Synonymous with space manager client.
- high migration
threshold
- A percentage of the storage pool capacity that identifies
when the server can start migrating files to
the next available storage pool in the hierarchy.
Contrast with low migration threshold. See server
migration.
- HSM client
- Hierarchical storage management client. Also known as the space manager client.
- image backup
- A backup of a full file system or raw logical volume
as a single object.
- import
- The process of copying exported administrator
definitions, client node definitions, policy definitions,
server control information or file data from external
media to a target server. A subset of information can be imported to a target server from the external
media. Used to move or copy information between servers. See export.
- inactive version
- A backup version of a file that is either not the most recent backup
version or that is a backup version of a file that no longer exists on the
client system. Inactive backup versions are
eligible for expiration processing according to the
management class assigned to the file. Contrast with active
version.
- include-exclude
file
- A file containing statements that Tivoli
Storage Manager uses to determine whether to include certain files in
specific client operations, and to determine the associated
management classes to use for backup, archive, and space
management. See include-exclude list.
- include-exclude
list
- A group of include and exclude option statements that Tivoli Storage Manager uses.
The exclude
options identify files that are not to be included in specific client
operations such as backup or space management. The include options
identify files that are exempt from the exclusion rules. The include
options can also assign a management class to a file or group of files
for backup, archive, or space management services. The
include-exclude list for a client may include option statements from the client
options file, from separate include-exclude files, and from a client option set on the
server.
- incremental backup
- (1) The process of backing up files or
directories that are new or have changed since the last
incremental backup. See also selective backup.
- (2) The process of copying only
the pages in the database that are new or changed since
the last full or incremental backup of the database.
Contrast with full backup. See also database backup
series.
- LAN-free data transfer
- The movement of client data directly between a client and a storage device over a SAN, rather than over the LAN.
- library
- (1) A repository for demountable recorded media, such as
magnetic tapes.
- (2) For Tivoli Storage Manager, a collection of one or
more drives, and possibly robotic devices (depending on
the library type), which can be used to access storage
volumes.
- (3) In the AS/400 system, a system object that serves as
a directory to other objects. A library groups related
objects, and allows the user to find objects by name.
- library client
- A Tivoli Storage Manager server that uses server-to-server communication
to access a library that is managed by another Tivoli Storage Manager
server. See also library manager.
- library manager
- A Tivoli Storage Manager server that controls device operations when multiple
Tivoli Storage Manager servers share a storage device. The device operations include mount, dismount,
volume ownership, and library inventory. See also library client.
- logical file
- A file stored in one or more server storage pools,
either by itself or as part of an aggregate. See
also aggregate and physical file.
- logical occupancy
- The amount of space used by logical files in a
storage pool. This space does not include
the unused space created when logical files are deleted
from aggregates, so it might be less than the physical
occupancy. See also physical occupancy, physical file, and logical
file.
- logical volume
- (1) A portion of a physical volume that contains a file system.
- (2)
For the Tivoli Storage Manager server, the combined space on all volumes
for either the
database or the recovery log. The database is one logical volume, and the recovery log
is one logical volume.
- low migration
threshold
- A percentage of the storage pool capacity that specifies
when the server can stop the migration of
files to the next storage pool. Contrast with high
migration threshold. See server migration.
- macro file
- A file that contains one or more Tivoli Storage Manager administrative commands,
which can be run only from an administrative client by using the MACRO
command. Contrast
with Tivoli Storage Manager command script.
- managed object
- A definition in the database of a managed server that was distributed to the managed server
by a configuration manager. When a managed
server subscribes to a profile, all objects associated
with that profile become managed objects in the database
of the managed server. In general, a managed object cannot be
modified locally on the managed server. Objects can include policy,
schedules, client options sets, server scripts,
administrator registrations, and server and server group
definitions.
- managed server
- A Tivoli Storage Manager server that receives
configuration information from a configuration manager
via subscription to one or more profiles. Configuration
information can include definitions of objects such as
policy and schedules. See configuration manager, subscription,
and profile.
- managed system
- A client or server that requests services from the Tivoli Storage Manager server.
- management class
- A policy object that users can bind to each file to
specify how the server manages the file. The management
class can contain a backup copy group, an archive copy
group, and space management attributes. The copy groups
determine how the server manages
backup versions or archive copies of the file. The space
management attributes determine whether the file is eligible for
migrated by the space manager client to server storage, and under what
conditions the file is migrated. See
also copy group, binding, and rebinding.
- maximum extension
- Specifies the maximum amount of storage space, in
megabytes, that you can extend the database or the recovery
log.
- maximum reduction
- Specifies the maximum amount of storage space, in
megabytes, that you can reduce the database or the recovery
log.
- maximum utilization
- The highest percentage of assigned capacity used by the
database or the recovery log.
- migrate
- To move data from one storage location to another. See also client
migration and server migration.
- mirroring
- The process of writing the same data to multiple disks at the same time.
Mirroring data protects against data loss within the
database or the recovery log.
- mode
- A copy group attribute that specifies whether to back up
a file that has not been modified since the last time the
file was backed up. See modified and absolute.
- modified mode
- A backup copy group mode that specifies that a file is
considered for incremental backup only if it has changed
since the last backup. A file is considered changed if
the date, size, owner, or permissions have changed. See also mode.
Contrast with absolute mode.
- mount
- To place a data medium (such as a tape cartridge) on a
drive in a position to operate.
- mount limit
- A device class attribute specifying the maximum number of
volumes that can be simultaneously accessed from the same
device class. The mount limit determines the maximum number of mount
points. See mount point.
- mount point
- A logical drive through which the server accesses volumes in a sequential access device class. For
a removable media device such as tape, a mount point is a logical drive
associated with a physical drive. For a device class with
the device type of FILE, a mount point is a logical drive
associated with an I/O stream. The number of mount points
for a device class is determined by the mount limit for
that class. See mount limit.
- mount retention
period
- A device class attribute that specifies the maximum
number of minutes that the server retains a mounted
sequential access media volume that is not being used
before it dismounts the sequential access media volume.
- mount wait period
- A device class attribute that specifies the maximum
number of minutes that the server waits for a sequential
access volume mount request to be satisfied before
canceling the request.
- NAS
- Network-attached storage.
- NAS node
- A Tivoli Storage Manager node that is a NAS file server. Data for the NAS node is
transferred by the NAS file server itself at the direction of a Tivoli Storage Manager
server that uses NDMP. The data is not transferred by the Tivoli Storage
Manager client. Also
called NAS file server node.
- native format
- A format of data that is written to a storage pool directly by the Tivoli
Storage Manager server. Contrast with non-native data format.
- NDMP
- Network Data Management Protocol.
- network-attached storage (NAS) file server
- A dedicated storage device with an operating system that is optimized
for file-serving functions. In Tivoli Storage Manager, a NAS file server can have the
characteristics of both a node and a data mover. See also data
mover and NAS node.
- Network Data Management Protocol (NDMP)
- An industry-standard protocol that allows a network storage-management
application (such as Tivoli Storage Manager) to control the backup and recovery of an NDMP-compliant file
server without installing third-party software on that file server.
- node
- (1) A workstation or file server that is registered with a Tivoli Storage
Manager server to receive its services. See also client node and NAS
node. (2) In a Microsoft
cluster configuration, one of the computer systems that make up the
cluster. See cluster.
- node privilege class
- A privilege class that allows a user to remotely access backup-archive clients
for a specific client node or for all clients in a
policy domain.
- non-native data format
- A format of data written to a storage pool that is different from
the format that the server uses for basic LAN-based operations. The
data is written by a data mover instead of the server. Storage pools with data written in a non-native format may not support
some server operations, such as audit of a volume. The NETAPPDUMP data
format for NAS node backups is an example of a non-native format.
-
- open registration
- A registration process in which any users can register their
own workstations as client nodes with the server.
Contrast with closed registration.
- operator
privilege class
- A privilege class that allows an
administrator to issue commands that disable or halt the server,
enable the server, cancel server processes, and manage removable media.
- page
- A unit of space allocation
within Tivoli Storage Manager database volumes.
- path
- A Tivoli Storage Manager object that defines a one-to-one relationship
between a source and a destination. Using the path, the source
accesses the destination. Data may flow from the source to the
destination, and back. An example of a source is a data mover (such
as a NAS file server), and an example of a destination is a tape drive.
- physical file
- A file stored in one or more storage pools, consisting
of either a single logical file, or a group of logical
files packaged together (an aggregate). See also aggregate and logical file.
- physical occupancy
- The amount of space used by physical files in a storage pool. This space
includes the unused space created when logical
files are deleted from aggregates. See also physical
file, logical file, and logical occupancy.
- policy domain
- A policy object that contains policy sets, management
classes, and copy groups that are used by a group of
client nodes. See policy set, management class,
and copy group.
- policy privilege
class
- A privilege class that allows an
administrator to manage policy objects, register client
nodes, and schedule client operations for client nodes. Authority can be
restricted to certain policy domains. See also privilege class.
- policy set
- A policy object that contains a group of management class
definitions that exist for a policy domain. Several policy sets can
exist within a policy domain
but only one policy set is active at one time. See management
class and active policy set.
- premigration
- For a space manager client, the process of copying files that are
eligible for migration to server storage, while leaving the original file intact on the local system.
- primary storage
pool
- A named set of volumes that the server uses
to store backup versions of files, archive copies of
files, and files migrated from HSM client nodes. You can back up a primary storage pool
to a copy storage
pool. See destination and copy storage pool.
- privilege class
- A level of authority granted to an administrator. The privilege class determines which
administrative tasks the
administrator can perform. For example, an administrator
with system privilege class can perform any
administrative task. Also called administrative privilege class. See system privilege class,
policy privilege class, storage privilege class, operator
privilege class, and analyst privilege class.
- profile
- A named group of configuration information that can be
distributed from a configuration manager when a managed
server subscribes. Configuration information can include
registered administrators, policy, client schedules,
client option sets, administrative schedules, server
command scripts, server definitions, and server group
definitions. See configuration manager and managed
server.
- randomization
- The process of distributing schedule start times for different clients
within a specified percentage of the schedule's startup window.
- rebinding
- The process of associating a file with a backed-up file
with a new management class name. For example, rebinding
occurs when the management class associated with a file
is deleted. See binding.
- recall
- To access files that have
been migrated from workstations to server storage by using the space manager
client. Contrast with migrate.
- receiver
- A server repository that contains a log of server messages and client messages as events. For example, a receiver can be
a file exit, a user exits, or the Tivoli Storage Manager server console and activity log. See also
event.
- reclamation
- A process of consolidating the remaining data from many
sequential access volumes onto fewer new sequential
access volumes.
- reclamation
threshold
- The percentage of reclaimable space that a sequential
access media volume must have before the server can
reclaim the volume. Space becomes reclaimable when files
are expired or are deleted. The percentage is set for a
storage pool.
- recovery log
- A log of updates that are about to be written to the
database. The log can be used to recover from system and
media failures.
- recovery log
buffer pool
- Storage that the server uses to hold new transaction records until they can be
written to the recovery log.
- reduce
- To free up space from the database or the recovery log, to allow you to
delete a volume.
Contrast with extend.
- register
- (1) To define a client node or administrator who can access
the server. See registration.
- (2) To specify licenses that have been purchased for the
server.
- registration
- The process of identifying a client node or administrator
to the server.
- restore
- To copy information from its backup location to the active
storage location for use. In Tivoli Storage Manager, you can restore the
server database, storage pools,
storage pool volumes, and users' backed-up files. The backup version of
a file in the storage pool is not affected by the restore operation. Contrast with backup.
- retention
- The amount of time, in days, that inactive backed-up or
archived files are kept in the storage pool before they
are deleted. Copy group attributes and default retention
grace periods for the domain define retention.
- retention period
- On an MVS server, a device class attribute that specifies
how long files are retained on sequential access media.
When used, Tivoli Storage Manager passes this information
to the operating system to ensure that other tape
management systems do not overwrite tape volumes that
contain retained data.
- retrieve
- To copy archived information from
the storage pool to the workstation for use. The archive copy in
the storage pool is not affected by the retrieve operation. Contrast with archive.
- rollback
- To remove changes that were made to database files since
the last commit point.
- schedule
- A database record that describes scheduled client
operations or administrative commands. See administrative
command schedule and client schedule.
- scheduling mode
- The method of interaction between a server and a client for running
scheduled operations on the client. Tivoli Storage Manager supports two scheduling
modes for client operations: client-polling and server-prompted.
- scratch volume
- A labeled volume that is either blank or contains
no valid data, that is not currently defined to Tivoli Storage Manager, and .that is available for
use.
- script
- See Tivoli Storage Manager command script.
- selective backup
- The process of backing up selected files or
directories from a client domain. See also incremental backup.
- serialization
- The process of handling files that are modified during back up or
archive processing. See static, dynamic, shared
static, and shared dynamic.
- server migration
- The process of moving data from one storage pool to the
next storage pool defined in the hierarchy, based on the migration
thresholds defined for the storage pools. See also high migration threshold
and low migration threshold.
- server options file
- A file that contains settings that control various server operations. These
settings, or options, affect such things as communications, devices, and performance.
- server-prompted
scheduling mode
- A client/server communication technique where the server
contacts the client when a scheduled operation needs to
be done. Contrast with client-polling scheduling mode.
- server storage
- The primary and copy storage pools used by the server to
store users' files: backup versions, archive copies, and
files migrated from space manager client nodes (space-managed
files). See primary storage pool, copy storage
pool, storage pool volume, and volume.
- session resource
usage
- The amount of wait time, CPU time, and space used or
retrieved during a client session.
- shared dynamic
- A value for serialization that specifies that a
file must not be backed up or archived if it is being modified during
the operation. Tivoli Storage Manager retries the
backup or archive operation a number of times; if the
file is being modified during each attempt, Tivoli Storage
Manager will back up or archive the file on its last try. See also serialization.
Contrast with dynamic, shared static, and static.
- shared library
- A library device that is shared among multiple Tivoli Storage Manager
servers.
- shared static
- A value for serialization that specifies that a
file must not be backed up or archived if it is being modified during
the
operation. Tivoli Storage Manager retries the
backup or archive operation a number of times; if the
file is being modified during each attempt, Tivoli Storage
Manager will not back up or archive the file. See also serialization. Contrast
with dynamic, shared dynamic, and static.
- snapshot
- See database snapshot.
- source server
- A server that can send data, in the form of virtual
volumes, to another server. Contrast with target
server.
- space-managed file
- A file that is migrated from a client node by the space manager client (HSM
client). The space manager client recalls the file to the client
node on demand.
- space management
- The process of keeping sufficient free storage space
available on a client node by migrating files to server storage. The files are migrated based on
criteria defined in management classes to which files are
bound, and the include-exclude list. Synonymous with hierarchical
storage management. See also migration.
- space manager client
- The Tivoli Space Manager program that enables users to maintain free
space on their workstations by migrating and recalling files to and from
server storage. Also called hierarchical storage management (HSM) client.
- startup window
- A time period during which a schedule must be initiated.
- static
- A value for serialization that specifies that a
file must not be backed up or archived if it is being modified during
the
operation. Tivoli Storage
Manager does not retry the operation. See also serialization.
Contrast with dynamic, shared dynamic, and shared
static.
- storage agent
- A program that enables a Tivoli Storage Manager client to back up and restore
client data directly to and from SAN-attached storage.
- storage hierarchy
- A logical ordering of primary storage pools, as defined
by an administrator. The
ordering is usually based on the speed and capacity of the
devices that the storage pools use. In Tivoli Storage
Manager, the storage hierarchy is defined by identifying
the next storage pool in a storage pool
definition. See storage pool.
- storage pool
- A named set of storage volumes that is the destination that the Tivoli Storage
Manager server uses to store client data. The client data consists of
backup versions, archive copies, and migrated files. You can back up a primary storage pool
to a copy storage pool. See
primary storage pool and copy storage pool.
- storage pool volume
- A volume that has been assigned to a storage pool. See volume, copy storage
pool, and primary storage pool.
- storage
privilege class
- A privilege class that allows an
administrator to control how storage resources for the server are
allocated and used, such as monitoring the
database, the recovery log, and server storage. Authority can be
restricted to certain storage pools. See also privilege class.
- stub file
- A file that replaces the original file on a client node
when the file is migrated from the client node to server storage by
Tivoli Storage Manager for Space Management.
- subscription
- The method by which a managed server requests that it
receive configuration information associated with a
particular profile on a configuration manager. See managed
server, configuration manager, and profile.
- system privilege
class
- A privilege class that allows an
administrator to issue all server commands. See also privilege class.
- tape library
- A term used to refer to a collection of drives and tape
cartridges. The tape library may be an automated device that performs tape cartridge
mounts and demounts without operator intervention.
- tape volume prefix
- A device class attribute that is the high-level-qualifier
of the file name or the data set name in the standard
tape label.
- target server
- A server that can receive data sent from another server.
Contrast with source server. See also virtual
volumes.
- Tivoli Storage Manager command script
- A sequence of Tivoli Storage Manager administrative commands that are stored in the
database of the Tivoli Storage Manager
server. You can run the script from any interface to
the server. The script can include substitution for command
parameters
and conditional logic.
- UCS-2
- An ISO/IEC 10646 encoding form, Universal Character Set coded in 2 octets.
The Tivoli Storage Manager client on Windows uses the UCS-2
code page when the client is enabled for Unicode.
- Unicode Standard
- A universal character encoding standard that supports the interchange,
processing, and display of text that is written in any of the languages of the
modern world. It can also support many classical and historical texts
and is continually being expanded. The Unicode Standard is compatible
with ISO/IEC 10646. For more information, see http://www.unicode.org.
- UTF-8
- Unicode transformation format - 8. A byte-oriented encoding form
specified by the Unicode Standard.
- validate
- To check a policy set for conditions that can cause problems if that
policy set becomes the active policy set. For example, the validation process
checks whether the policy set
contains a default management class.
- version
- A backup copy of a file stored in server storage. The most recent backup
copy of a file is the active version. Earlier copies of the same
file are inactive versions. The number of versions retained by the server
is determined by the copy group attributes in the management class.
- virtual volume
- An archive file on a target server that represents a sequential media volume
to
a source server.
- volume
- The basic unit of storage for the Tivoli Storage Manager
database, recovery log, and storage pools. A volume can
be an LVM logical volume, a standard file system file, a
tape cartridge, or an optical cartridge. Each volume is
identified by a unique volume identifier. See database
volume, scratch volume, and storage pool
volume.
- volume history file
- A file that contains information about: volumes used for
database backups and database dumps; volumes used for
export of administrator, node, policy, or server data;
and sequential access storage pool volumes that have been
added, reused, or deleted. The information is a copy of
the same types of volume information in the Tivoli
Storage Manager database.