standard
volume
A
volume
that
emulates
one
of
several
zSeries
volume
types,
including
3390-2,
3390-3,
3390-9,
3390-2
(3380-track
mode),
or
3390-3
(3380-track
mode),
by
presenting
the
same
number
of
cylinders
and
capacity
to
the
host
as
provided
by
the
native
zSeries
volume
type
of
the
same
name.
STI
See
self-timed
interface
.
storage
area
network
A
network
that
connects
a
company’s
heterogeneous
storage
resources.
storage
capacity
The
amount
of
data
that
a
storage
medium
can
hold;
usually
expressed
in
kilobytes,
megabytes,
or
gigabytes.
storage
complex
A
configuration
of
one
or
more
storage
units
that
is
managed
by
a
management
console.
storage
device
A
physical
unit
that
provides
a
mechanism
to
store
data
on
a
given
medium
such
that
it
can
be
subsequently
retrieved.
See
also
disk
drive
module
.
storage
extent
The
minimum
contiguous
range
of
storage
on
a
physical
storage
device,
array,
or
rank
that
can
be
allocated
to
a
local
volume
storage
server
A
physical
unit
that
manages
attached
storage
devices
and
provides
an
interface
between
them
and
a
host
computer
by
providing
the
function
of
one
or
more
logical
subsystems.
The
storage
server
can
provide
functions
that
the
storage
device
does
not
provide.
The
storage
server
has
one
or
more
clusters.
storage
unit
A
physical
unit
that
consists
of
a
storage
server
that
is
integrated
with
one
or
more
storage
devices
that
provide
storage
capability
to
a
host
computer.
storage
unit
identifier
A
unique
identifier
for
a
storage
unit
that
consists
of
a
manufacturer,
a
model
number,
a
type
number,
a
plant
of
manufacture,
and
a
sequence
number.
striping
A
technique
that
distributes
data
in
bit,
byte,
multibyte,
record,
or
block
increments
across
multiple
disk
drives.
subagent
An
extension
to
an
SNMP
agent
that
permits
a
user
to
dynamically
add,
or
in
some
cases
replace,
additional
management
variables
in
the
local
MIB,
thereby
providing
a
means
of
extending
the
range
of
information
that
network
managers
can
access.
See
also
agent
.
subchannel
A
logical
function
of
a
channel
subsystem
associated
with
the
management
of
a
single
device.
subordinate
storage
unit
The
physical
unit
that
receives
commands
from
the
master
storage
unit
and
is
specified
when
a
Global
Mirror
session
is
started.
The
subordinate
storage
unit
forms
consistency
groups
and
performs
other
Global
Mirror
processing.
A
subordinate
storage
unit
can
be
controlled
by
only
one
master
storage
unit.
Contrast
with
master
storage
unit
.
subsystem
identifier
(SSID)
A
number
that
uniquely
identifies
a
logical
subsystem
within
a
computer
installation.
support
catcher
See
catcher
.
support
catcher
telephone
number
The
telephone
number
that
connects
the
support
catcher
server
to
the
DS6000
to
receive
a
trace
or
dump
package.
See
also
support
catcher
and
remote
technical
assistance
information
network
.
switched
fabric
A
fibre-channel
topology
in
which
ports
are
interconnected
through
a
switch.
Fabric
switches
can
also
be
interconnected
to
support
numerous
ports
on
a
single
network.
See
also
arbitrated
loop
and
point-to-point
connection
.
symmetrical
multiprocessor
(SMP)
An
implementation
of
a
multiprocessor
computer
consisting
of
several
identical
processors
configured
in
a
way
that
any
subset
of
the
set
of
processors
is
capable
of
continuing
the
operation
of
the
computer.
TheDS6000
contains
four
processors
set
up
in
SMP
mode.
Glossary
251
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