Technical information

9871 Tenth Edition Glossary-1
Glossary
This glossary defines abbreviations and new
or special terms used in this publication.
Many of the definitions are taken from other
sources. 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). Draft international standards committee
drafts, and working papers being developed
by the ISO/IEC/JTC1/SC1.
Numerics
20-drive frame Also known as a 9741, a
frame/wall that contains up to 20 9840 tape
drives.
9741 A 20-drive wall that contains up to 20
9840 tape drives
9840 A cartridge drive that reads/writes to
tapes; the housing for the tape contains
supply and take-up reels.
A
ACS See automated cartridge system.
ACSLS See Automated Cartridge System
Library Software.
auto clean A feature of an automated library
that allows a cleaning cartridge to
automatically clean a tape drive when the
drive requires cleaning. The auto clean
function must also be supported by the host
software.
automated cartridge system (ACS) A
system that consists of five components: host
software, a library management unit, a library
control unit, library storage modules, and
cartridge subsystems. These components
provide automatic mounting and
dismounting of cartridge tapes into a
transport, cartridge access port, or pass-thru
port.
Automated Cartridge System Library
Software (ACSLS) The software within a
UNIX-based server that interfaces the server
and hosts; it also maintains a list of all tapes
within a library storage module.
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
bar code label A barcoded external label
that is both human- and machine-readable.
The format of this label is unique and must
be supplied by a StorageTek-approved
vendor.
beginning-of-tape. A point on the tape
where written data begins.
BOT See beginning-of-tape.