Tivoli Storage Manager for AIX: Managed System for SAN Storage Agent User's Guide


Glossary



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. For a complete Tivoli Storage Manager glossary, see
Administrator's Guide.

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|

|ACSLS
|Automated Cartridge System Library Software

API
Application program interface.

application client
One of the Tivoli Data Protection for application programs installed on a system. The Tivoli Storage Manager server provides backup services to these clients.

application program interface (API)
A set of functions that applications running on a client platform can call to store, query, and retrieve objects from TSM storage.

archive
A function that allows users to copy one or more files to a storage pool for long-term storage. Archive copies may be accompanied by descriptive information and may be retrieved by archive date, by file name, or by description. Contrast with retrieve.

|automated cartridge system library software (ACSLS)
|StorageTek ACSLS software is a library-enablement application. |ACSLS functions as the central service provider for library |operations.

B

backup
The process of copying information for safekeeping. TSM has processes for backing up user files, the TSM database, and storage pools. For example, users can back up one or more files to a storage pool to ensure against loss of data. Contrast with restore.

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.

C

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 TSM server: administrative client, application client, API client, backup-archive client, HSM client (also known as space manager client), and host server.

client node
A file server or workstation on which the backup-archive client program has been installed, which has been registered to the server.

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.

D

device class
A named group of storage devices with common characteristics. Each device class has a unique name and represents a device type of disk, file, optical disk, or tape.

device configuration file
(1) On a TSM storage agent, a file that contains the name and password of the storage agent and the DEFINE SERVER command for the TSM server that is managing the SAN-attached libraries and drives
(2) On a TSM server, a file that contains information about defined device classes, and, on some TSM servers, defined libraries and drives.

device driver
A collection of subroutines that control the interface between I/O device adapters and the processor.

device type
A category of storage device. Each device class is categorized with one of the supported device types, for example, DISK or CARTRIDGE.

drive
A device used to read and write data on a medium such as a magnetic disk, optical disk, or tape.

drive mapping
The correlation of drive names between a TSM server and a TSM storage agent.

dsm.opt file
See client options file and client user options file.

dsmserv.opt
See server options file.

dsmsta.opt
See storage agent options file.

E|

|External library
|A type of enablement provided by TSM to allow LAN-free data movement for |ACSLS managed STK libraries. To activate this support the TSM library |type must be EXTERNAL.

F

FILE device type
A device type that specifies sequential access files on disk storage.

L

LAN
Local area network.

LAN-free data transfer
The movement of client data directly from a client to 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 TSM, a collection of one or more drives, and possibly robotic devices (depending on the library type), which can be used to access storage volumes.

library manager
A TSM server that controls device operations when multiple TSM servers share a storage device. These operations include mount, dismount, volume ownership, and library inventory.

local area network (LAN)
A network in which a set of devices are connected to one another for communication and that can be connected to a larger network.

M

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 TSM server manages backup versions or archive copies of files. The space management attributes determine whether files are eligible for migration from space manager client nodes to TSM storage, and under what conditions. See also copy group.

mount request
A server request to mount a sequential access media volume so that data can be read from or written to the sequential access media.

N

node
A unique name used to identify a workstation to the server. See also client node.

P

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 and management class.

policy set
A policy object that contains a group of management class definitions that exist for a policy domain. At any one time there can be many policy sets within a policy domain but only one policy set can be active. See policy domain and management class.

R

reclamation
A process of consolidating the remaining data from many sequential access volumes onto fewer new sequential access volumes.

restore
The process of returning a backup copy to an active storage location for use. TSM has processes for restoring its database, storage pools, storage pool volumes, and users' backed-up files. For example, users can copy a backup version of a file from the storage pool to the workstation. The backup version in the storage pool is not affected. Contrast with backup.

S

SAN
Storage area network.

SCSI
Small computer system interface.

server
The program that provides backup, archive, space management, and administrative services to clients. The server program must be at the necessary level to provide all of these services.

server options file
A file that specifies processing options for communication methods, tape handling, pool sizes, language, and date, time, and number formats.

server storage
The 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 storage pool.

shared library
A library device that is shared among multiple Tivoli Storage Manager servers.

storage agent
A program that enables Tivoli Storage Manager to back up and restore client data directly to and from SAN-attached storage.

storage agent options file
A file that specifies options for the storage agent. This includes the name of the TSM server with which the storage agent communicates, the number of sessions that can be kept open to the server, and the name of the device configuration file.

storage area network (SAN)
A high-speed communications network optimized for storage.

storage pool
A named set of storage volumes that TSM uses to store client data. A storage pool is either a primary storage pool or a copy storage pool.

T

tape library
(1) A term used to refer to a collection of tape cartridges.
(2) An automated device that performs tape cartridge mounts and demounts without operator intervention.

TCP/IP
Transmission Control Protocol/Internet Protocol.

Tivoli Storage Manager (TSM)
A client/server program that provides storage management to customers in a multivendor computer environment.

Transmission Control Protocol/Internet Protocol (TCP/IP)
A set of communication protocols that support peer-to-peer connectivity functions for both local and wide area networks.

TSM
Tivoli Storage Manager.

TSM application program interface (API)
A set of functions that applications running on a client platform can call to store, query, and retrieve objects from TSM storage.


[ Top of Page | Previous Page | Next Page | Table of Contents | Index ]