Glossary of Terms and Abbreviations

This glossary includes terms and definitions from:

vThe American National Dictionary for Information Systems, ANSI X3.172-1990, copyright 1990 by the American National Standards Institute (ANSI). Copies may be purchased from the American National Standards Institute, 1430 Broadway, New York, New York 10018. The symbol (A) after the definition identifies definitions.

vThe Information Technology Vocabulary developed by Subcommittee 1, Joint Technical Committee 1, of the International Organization for Standardization and the International Electrotechnical Committee (ISO/IEC JTC1/SC1). Definitions of published parts of this vocabulary are identified by the symbol (I) after the definition. Definitions taken from draft international standards, committee drafts, and working papers being developed by ISO/IEC JTC1/SC1 are identified by the symbol (T) after the definition, indicating that final agreement has not yet been reached among participating National Bodies of SC1.

ac. Alternating current.

ACR. In data communications, abbreviation for abandon call and retry.

AER. Asynchronous error report.

APAR. See authorized program analysis report. APPN. See advanced peer-to-peer networking (APPN). AROS. Alterable read-only storage.

ASCII. See American National Standard Code for Information Interchange.

ASP. See auxiliary storage pool.

advanced program-to-program communications (APPC). Data communications support that allows programs on an iSeries server to communicate with programs on other systems having compatible communications support. APPC on the iSeries server provides an application programming interface to the SNA LU type 6.2 and node type 2.1 architectures.

alternate installation device. A tape device that is used to load Licensed Internal Code (LIC) from the tape to the load source disk unit during a restore or installation operation. The alternate installation device can be on a different bus unit or on a different

input/output processor (IOP) than the load source disk unit. See also installation device.

alternate installation IPL. A special type of installation (D) IPL in which the system uses the installation device to IPL itself, then uses the alternate installation device to copy the LIC to the load source disk unit from. See also alternate installation device.

alternate installation media. Media (tape) that contains the Licensed Internal Code (LIC) that will be installed or restored on a system during an alternate installation IPL (type D IPL). It is placed in an alternate installation device.

American National Standards Institute (ANSI). An organization that is sponsored by the Computer and Business Equipment Manufacturers Association for establishing voluntary industry standards.

American National Standard Code for Information Interchange (ASCII). The code that was developed by the American National Standards Institute for information exchange among data processing systems, data communications systems, and associated equipment. The ASCII character set consists of 7-bit control characters and symbolic characters, plus one parity-check bit.

attended IPL. An initial program load that allows you to change configuration options from the display to manually control how the system does an IPL and how the system runs.

authorized program analysis report (APAR). A request for correction of a defect in a release of an IBM-supplied program.

auxiliary storage pool (ASP). A group of disk units that are defined from the auxiliary storage devices. See also system ASP.

BAT. See basic assurance test.

BBBBCcbb. Addressing scheme for the bus (BBBB), card (Cc), and board (bb).

bis. In data communications, secondary (as in V.27 bis, the identifier assigned by the International Telecommunications Union (ITU)). There is an ITU V.27, ITU V.27 bis (where V.27 bis is basically a secondary method of achieving V.27), and ITU V.27 ter (where ter = tertiary). This term is also used with X.21 and V.25.

bpi. Bits per inch.

Bpi. Bytes per inch.

© Copyright IBM Corp. 1997, 2002

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IBM SY44-5902-05 manual Glossary of Terms and Abbreviations, BAT. See basic assurance test