Glossary - IBM AS/400 Repair And Parts Manual

Glossary
This glossary includes terms and definitions from:
• The 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. Definitions are identified by
the symbol (A) after the definition.
• The 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 inter-
national standards, committee drafts, and working
papers being developed by ISOIIEC
JTC1/SC1
are
identified by the symbol (T) after the definition, indi-
cating that final agreement has not yet been
reached among participating National Bodies of
SC1.
adapter card. A smaller card that attaches to a full-
size card.
allocate. To reserve a resource for use in performing
a specific task.
ASP. Auxiliary storage pool.
checksum protection. A function that protects data
stored in an auxiliary storage pool from being lost
because of the failure of a single disk. When checksum
protection is in effect and a disk failure occurs, the
system automatically reconstructs the data when the
system program is loaded after the device is repaired.
©
Copyright IBM Corp. 1994
configure. To describe to a system the devices,
optional features, and programs installed on the system.
DASD. Direct access storage device.
device parity protection. A function that protects data
stored on a disk unit subsystem from being lost
because of the failure of a single disk unit in the disk
unit subsystem. When a disk unit subsystem has
device parity protection and one of the disk units in the
subsystem fails, the system continues to run. The disk
unit subsystem reconstructs the data after the disk unit
in the subsystem is repaired or replaced.
DST. Dedicated service tools.
ESD. Electrostatic discharge.
FC. Feature code.
FRU. Field replaceable unit.
IPl. Initial program load.
MFIOP. Multiple function input/output processor.
mirrored protection. A function that protects data by
duplicating all disk unit data on one storage unit in an
auxiliary storage pool to another storage unit within the
same auxiliary storage pool.
PTF. Program temporary fix.
SRC. System reference code.
SST. System service tools.
VLlC. Vertical licensed internal code.
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