Glossary
This
glossary
includes
terms
and
definitions
from:
v
The
Dictionary
of
Computing
,
SC20-1699.
v
The
American
National
Standard
Dictionary
for
Information
Systems
,
ANSI
X3.172-1990,
copyright
1990
by
the
American
National
Standards
Institute
(ANSI).
Copies
can
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.
v
The
ANSI/EIA
Standard
-
440A:
Fiber
Optic
Terminology
,
copyright
1989
by
the
Electronics
Industries
Association
(EIA).
Copies
can
be
purchased
from
the
Electronic
Industries
Association,
2001
Pennsylvania
Avenue
N.W.,
Washington,
D.C.
20006.
Definitions
are
identified
by
the
symbol
(E)
after
the
definition.
v
The
Information
Technology
Vocabulary
,
developed
by
Subcommittee
1,
Joint
Technical
Committee
1,
of
the
International
Organization
for
Standardization
and
the
International
Electrotechnical
Commission
(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
the
participating
National
Bodies
of
SC1.
The
following
cross-references
are
used
in
this
glossary:
Contrast
with.
This
refers
to
a
term
that
has
an
opposed
or
substantively
different
meaning.
See.
This
refers
the
reader
to
multiple-word
terms
in
which
this
term
appears.
See
also.
This
refers
the
reader
to
terms
that
have
a
related,
but
not
synonymous,
meaning.
Synonym
for.
This
indicates
that
the
term
has
the
same
meaning
as
a
preferred
term,
which
is
defined
in
the
glossary.
A
absolute
address.
(1)
A
direct
address
that
identifies
a
location
without
reference
to
a
base
address.
An
absolute
address
may
itself
be
a
base
address.
(T)
(2)
In
ESA/390
modes,
an
address
that
exists
after
translation
and
prefixing,
but
before
configuration
occurs.
active
logical
partition.
An
operator-initiated
procedure
that
performs
a
system
reset
to
a
logical
partition
and
assigns
the
previously
defined
hardware
to
that
partition.
It
causes
an
automatic
IPL
of
the
system
control
program
to
occur
in
the
partition
unless
the
operator
performs
the
IPL
manually.
Contrast
with
deactivate
logical
partition
.
active
configuration.
In
an
ESCON
environment,
the
ESCON
Director
configuration
determined
by
the
status
of
the
current
set
of
connectivity
attributes.
adapter.
(1)
Hardware
that
provides
some
transitional
functions
between
two
or
more
devices.
(2)
A
mechanism
for
attaching
parts,
for
example,
parts
having
different
diameters.
(3)
In
an
ESCON
or
FICON
environment,
link
hardware
used
to
join
different
optical
fiber
connector
types.
address.
(1)
A
value
that
identifies
a
register,
a
particular
part
of
storage,
a
data
source,
or
a
data
sink.
The
value
is
represented
by
one
or
more
characters.
(T)
(2)
To
refer
to
a
device
or
an
item
of
data
by
its
address.
(I)
(A)
(3)
The
location
in
the
storage
of
a
computer
where
data
is
stored.
(4)
In
data
communication,
the
unique
code
assigned
to
each
device
or
workstation
connected
to
a
network.
(5)
The
identifier
of
a
location,
source,
or
destination.
allocate.
To
assign
a
resource,
such
as
a
disk
or
a
diskette
file,
to
perform
a
task.
Contrast
with
deallocate
.
AP.
Adjunct
processor.
APAR.
Authorized
program
analysis
report.
application.
(1)
The
use
to
which
an
information
processing
system
is
put,
for
example,
a
payroll
application,
an
airline
reservation
application,
a
network
application.
(2)
A
collection
of
software
components
used
to
perform
specific
types
of
work
on
a
computer.
application
program.
(1)
A
program
that
is
specific
to
the
solution
of
an
application
problem.
(T)
(2)
A
program
written
for
or
by
a
user
that
applies
to
the
user’s
work,
such
as
a
program
that
does
inventory
control
or
payroll.
(3)
A
program
used
to
connect
and
communicate
with
stations
in
a
network,
enabling
users
to
perform
application-oriented
activities.
ARF.
Automatic
Reconfiguration
Facility.
A
hardware/LPAR
function
that
is
part
of
the
cross-partition
authority
control
setting.
ARF
functions
are
used
by
the
Sysplex
Failure
Manager
(SFM)
policy
©
Copyright
IBM
Corp.
2005,
2008
D-1
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