Tivoli Header
Administrator's Reference
The terms in this glossary are defined as they pertain to the Tivoli
Storage Manager library. If you do not find the term you need, refer to
the IBM Software Glossary on the Web at this URL: www.ibm.com/ibm/terminology/. You can
also refer to IBM Dictionary of Computing, New York:
McGraw-Hill, 1994.
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).
- A
- absolute mode
- A backup copy group mode indicating 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 mode.
- 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
- See 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 file
- A file, 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.
See also privilege class.
- application client
- One of the Tivoli 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 archive copies. An archive copy group
belongs to a management class.
- archive retention grace period
- The number of days that Tivoli Storage Manager retains an archive copy
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 also 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 and
recovery log. This space can be used to extend the capacity of the
database or recovery log, or to provide sufficient free space before a volume
is deleted from the database or recovery log.
- B
- 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 can exist in server storage, but only one backup version is the
active version. See also 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.
- C
- 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 Tivoli Space
Manager).
- 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.
- D
- 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 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 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.
- 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 backup-archive 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 plan
- A file created by Tivoli 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 Tivoli Disaster Recovery Manager.
- dsm.opt file
- See client options file and client user options
file.
- dsmserv.opt
- 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.
- E
- 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 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. 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.
- F
- 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 what the original content of the file because Tivoli Storage Manager
backed up or archived the file while the file was being modified.
- H
- hierarchical storage management (HSM) client
- The Tivoli Space Manager 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.
- I
- 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
- On UNIX and Windows clients, 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 include-exclude file (for UNIX clients) or the client
options file (for other clients), 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.
- L
- 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 file. See also aggregate file 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 aggregate files, 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 filesystem.
- (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.
- M
- 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 copies or archive copies of the
file. The space management attributes determine whether the file is
eligible to be migrated from the space manager client nodes to server storage
and under what conditions the file is migrated. See also copy
group, space manager client, binding, and
rebinding.
- maximum extension
- Specifies the maximum amount of storage space, in megabytes, that you can
extend the database or recovery log.
- maximum reduction
- Specifies the maximum amount of storage space, in megabytes, that you can
reduce the database or recovery log.
- maximum utilization
- The highest percentage of assigned capacity used by the database or
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
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 that specifies 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.
- N
- 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.
- node privilege class
- A privilege class that allows an administrator to remotely access
backup-archive clients for a specific client node or for all clients in a
policy domain. See also privilege class.
- O
- 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. See also privilege class.
- P
- page
- A unit of space allocation within Tivoli Storage Manager database
volumes.
- 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
file). See also aggregate file 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 classes 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 also system privilege class, policy privilege class, storage
privilege class, operator privilege class, and analyst privilege class.
See also system privilege class, policy privilege class,
storage privilege class, operator privilege class,
analyst privilege class, and node 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, Tivoli Storage Manager command
scripts, server definitions, and server group definitions. See
configuration manager and managed server.
- R
- 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 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
exit, 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 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 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 MVS 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 version in the storage pool is not affected by the
retrieve operation. Contrast with archive. See also
storage pool.
- rollback
- To remove changes that were made to database files since the last commit
point.
- S
- 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. incremental backup. See also incremental
backup.
- serialization
- The process of handling files that are modified during backup 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 Tivoli
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 the 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 Tivoli Storage Manager 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, 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 Space
Manager.
- 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.
- T
- 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 Disaster Recovery Manager (DRM)
- A product that works with Tivoli Storage Manager to assist in preparing
and later using a disaster recovery plan file for the Tivoli Storage Manager
server.
- Tivoli Storage Manager command script
- A sequence of Tivoli Storage Manager administrative commands that are
stored in the Tivoli Storage Manager server database. You can run the
script from any interface to the server. The script can include
substitution for command parameters and conditional logic.
- U
- UCS-2
- An ISO/IEC 10646 encoding form, Universal Character Set coded in 2
octets. The Tivoli Storage Manager client on Windows NT and Windows
2000 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.
- V
- 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.
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