Installation and User's Guide

Common Programming Interface forCommunications (CPI-C)A call-level interface that provides aconsistent application programminginterface (API) for applications that useprogram-to-program communications.CPI-C uses LU 6.2 architecture to create aset of interprogram services that canestablish and end a conversation, sendand receive data, exchange controlinformation, and notify a partner programof errors.communication methodThe method by which a client and serverexchange information. See alsoTransmission Control Protocol/InternetProtocol.communication protocolA set of defined interfaces that permitcomputers to communicate with eachother.compressionA function that removes repetitivecharacters, spaces, or strings of charactersfrom the data being processed andreplaces the repetitive characters withcontrol characters. Compression reducesthe amount of storage space that isrequired for the data.configuration managerA server that distributes configurationinformation, such as policies andschedules, to managed servers accordingto their profiles. Configurationinformation can include policy andschedules. See also managed server andprofile.conversationA connection between two programs overa session that allows them tocommunicate with each other whileprocessing a transaction.copy backupA full backup in which the transaction logfiles are not deleted so that backupprocedures that use incremental ordifferential backups are not disruptedcopy groupA policy object containing attributes thatcontrol how backup versions or archivecopies are generated, where backupversions or archive copies are initiallylocated, and when backup versions orarchive copies expire. A copy groupbelongs to a management class. See alsoarchive copy group, backup copy group,backup version, and management class.copy storage poolA named set of volumes that containcopies of files that reside in primarystorage pools. Copy storage pools areused only to back up the data that isstored in primary storage pools. A copystorage pool cannot be a destination for abackup copy group, an archive copygroup, or a management class (forspace-managed files). See also primarystorage pool and destination.CPI-C See Common Programming Interface forCommunications.DdaemonA program that runs unattended toperform continuous or periodic functions,such as network control.damaged fileA physical file in which Tivoli StorageManager has detected read errors.data access control modeA mode that controls whether a commandcan access a migrated file, see a migratedfile as zero-length, or receive aninput/output error if it attempts to accessa migrated file. See also execution mode.database backup seriesOne full backup of the database, plus upto 32 incremental backups made sincethat full backup. Each full backup that isrun starts a new database backup series.A number identifies each backup series.database snapshotA complete backup of the entire databaseto media that can be taken off-site. Whena database snapshot is created, the currentdatabase backup series is not interrupted.A database snapshot cannot haveincremental database backups associatedwith it. See also database backup series.Contrast with full backup.data deduplicationA method of reducing storage needs byeliminating redundant data. Only oneinstance of the data is retained on storageGlossary 677