Table of Contents
Advertisement
Glossary
This glossary defines terms and abbreviations in
this and other product-related publications.
Some of the definitions are taken from other
glossaries. The letters in the parentheses that
follow some definitions indicate the source of the
definition:
(A) • The American National Standard Dictionary for
Information Systems, ANSI X3.172-1990,
copyright 1990 by the American National
Standards Institute (ANSI).
(E) • The ANSI/Electronic Industries
Association (EIA) Standard-440-A, Fiber
Optic Terminology.
(I) •
The Information Technology Vocabulary,
developed by Subcommittee 1, Joint
Technical Committee 1, of the
International Organization for
Standardization and International
Electrotechnical Commission (ISO/IEC/
JTC1/SC1).
(IBM) The IBM Dictionary of Computing, copyright
1994 by IBM.
(T) International standards committee drafts, and
working papers being developed by the ISO/IEC/
JTC1/SC1.
A
A Ampere.
AC alternating current.
access time The time interval between the time
data is requested and data is delivered.
adapter A card that provides the physical
interface between the host system I/O bus and the
SCSI or Fibre channel bus. See also host bus
adapter.
MT9104
application software Software that is specific to
the solution of an application problem.
audit An operation to catalog or record the
physical location of a cartridge tape in an
automated library.
auto clean A feature of an automated library that
allows a cleaning cartridge to automatically be
inserted into a drive when a drive indicates that it
requires cleaning. The host software must support
the auto clean function.
automated mode A relationship between a
library and the client. In automated mode, the
robot moves the cartridges among the storage
cells, CAP, and drives in response to client
commands. This is the normal operating mode of
a library that is communicating with the client.
B
B See byte.
backward read compatible (BRC) The ability
of an SDLT 220 tape drive to read recorded data
from an earlier version of DLT tape drive. Contrast
with non-backward read compatible (NBRC).
baud The communications transfer rate for serial
data.
bit (1) A unit of information equal to a 1 or a 0.
British thermal unit (Btu) A standard measure
of a device's heat output. The amount of heat
required to raise one pound of water one degree
Fahrenheit.
Btu See British thermal unit.
bus A facility that transfers data between two
devices with only one device having control at a
time.
byte A number of bits, treated as a unit, and
representing a character.
Seventh Edition
Glossary-1
Advertisement
Table of Contents
