Glossary
This glossary provides definitions for the
terminology used for the IBM TotalStorage FAStT.
This glossary also provides definitions for the
terminology used for the IBM TotalStorage FAStT
Storage Manager.
This glossary defines technical terms and
abbreviations used in this document. If you do not
find the term you are looking for, see the
IBM
Glossary of Computing Terms
located at:
www.ibm.com/networking/nsg/nsgmain.htm
This glossary also includes terms and definitions
from:
v
Information Technology Vocabulary
by
Subcommittee 1, Joint Technical Committee 1,
of the International Organization for
Standardization and the International
Electrotechnical Commission (ISO/IEC
JTC1/SC1). Definitions are identified by the
symbol (I) after the definition; definitions taken
from draft international standards, committee
drafts, and working papers by ISO/IEC
JTC1/SC1 are identified by the symbol (T) after
the definition, indicating that final agreement
has not yet been reached among the
participating National Bodies of SC1.
v
IBM Glossary of Computing Terms
. New York:
McGraw-Hill, 1994.
The following cross-reference conventions are
used in this glossary:
See
Refers you to (a) a term that is the
expanded form of an abbreviation or
acronym, or (b) a synonym or more
preferred term.
See also
Refers you to a related term.
Abstract Windowing Toolkit (AWT).
A Java graphical
user interface (GUI).
accelerated graphics port (AGP).
A bus specification
that gives low-cost 3D graphics cards faster access to
main memory on personal computers than the usual
PCI bus. AGP reduces the overall cost of creating
high-end graphics subsystems by using existing system
memory.
access volume.
A special logical drive that allows the
host-agent to communicate with the controllers in the
storage subsystem.
adapter.
A printed circuit assembly that transmits user
data (I/Os) between the internal bus of the host system
and the external fibre channel link and vice versa. Also
called an I/O adapter, host adapter, or FC adapter.
advanced technology (AT) bus architecture.
A bus
standard for IBM compatibles. It extends the XT bus
architecture to 16 bits and also allows for bus
mastering, although only the first 16 MB of main
memory are available for direct access.
agent.
A server program that receives virtual
connections from the network manager (the client
program) in an SNMP-TCP/IP network-managing
environment.
AGP.
See
accelerated graphics port
.
AL_PA.
See
arbitrated loop physical address
.
arbitrated loop.
A shared 100 MBps fibre channel
transport structured as a loop and supporting up to 126
devices and one fabric attachment. A port must
successfully arbitrate before a circuit can be
established.
arbitrated loop physical address (AL_PA).
One of
three existing fibre channel topologies, in which two to
126 ports are interconnected serially in a single loop
circuit. Access to the FC-AL is controlled by an
arbitration scheme. The FC-AL topology supports all
classes of service and guarantees in-order delivery of
FC frames when the originator and responder are on
the same FC-AL. The default topology for the disk array
is arbitrated loop. An arbitrated loop is sometimes
referred to as Stealth Mode.
auto volume transfer/auto disk transfer (AVT/ADT).
A function that provides automatic failover in case of
controller failure on a storage subsystem.
AVT/ADT.
See
auto volume transfer/auto disk transfer
.
AWT.
See
Abstract Windowing Toolkit
.
basic input/output system (BIOS).
Code that controls
basic hardware operations, such as interactions with
diskette drives, hard disk drives, and the keyboard.
BIOS.
See
basic input/output system
.
BOOTP.
See
bootstrap protocol
.
bootstrap protocol (BOOTP).
A Transmission Control
Protocol/Internet Protocol (TCP/IP) protocol that a
diskless workstation or network computer use to obtain
its IP address and other network information such as
server address and default gateway.
© Copyright IBM Corp. 2003
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