IBM TOTAL STORAGE DS8000 User Manual
Page 371
protocols
that
provide
end-to-end
connections
between
applications
over
interconnected
networks
of
different
types.
2)
A
suite
of
transport
and
application
protocols
that
run
over
the
Internet
Protocol.
(GC)
See
also
Internet
Protocol
and
Transmission
Control
Protocol.
transparency
See
software
transparency.
TSO
See
time
sharing
option.
turbo
processor
A
faster
multiprocessor
that
has
six
processors
with
common
access
to
the
main
storage.
U
UFS
UNIX
filing
system.
Ultra-SCSI
An
enhanced
small
computer
system
interface.
unconfigure
To
delete
the
configuration.
unit
address
For
zSeries,
the
address
associated
with
a
device
on
a
given
control
unit.
On
ESCON
interfaces,
the
unit
address
is
the
same
as
the
device
address.
On
OEMI
interfaces,
the
unit
address
specifies
a
control
unit
and
device
pair
on
the
interface.
unprotected
volume
An
AS/400
term
that
indicates
that
the
AS/400
host
recognizes
the
volume
as
an
unprotected
device,
even
though
the
storage
resides
on
a
RAID-formatted
array
and
is,
therefore,
fault
tolerant
by
definition.
The
data
in
an
unprotected
volume
can
be
mirrored.
Also
referred
to
as
an
unprotected
device.
upper-layer
protocol
The
layer
of
the
Internet
Protocol
(IP)
that
supports
one
or
more
logical
protocols
(for
example,
a
SCSI-command
protocol
and
an
ESA/390
command
protocol).
Refer
to
ANSI
X3.230-199x.
UTC
See
Coordinated
Universal
Time.
V
virtual
machine
facility
A
virtual
data
processing
machine
that
appears
to
the
user
to
be
for
the
exclusive
use
of
that
user,
but
whose
functions
are
accomplished
by
sharing
the
resources
of
a
shared
data
processing
system.
An
alternate
name
for
the
VM/370
IBM
operating
system.
vital
product
data
(VPD)
Information
that
uniquely
defines
the
system,
hardware,
software,
and
microcode
elements
of
a
processing
system.
VM
The
root
name
of
several
IBM
operating
systems,
such
as
VM/XA,
VM/ESA,
VM/CMS,
and
z/VM.
See
also
virtual
machine
facility.
volume
For
zSeries,
the
information
recorded
on
a
single
unit
of
recording
medium.
Indirectly,
it
can
refer
to
the
unit
of
recording
medium
itself.
On
a
nonremovable-
medium
storage
device,
the
term
can
also
indirectly
refer
to
the
storage
device
associated
with
the
volume.
When
multiple
volumes
are
stored
on
a
single
storage
medium
transparently
to
the
program,
the
volumes
can
be
referred
to
as
logical
volumes.
volume
group
A
collection
of
either
physical
or
logical
volumes.
volume
label
A
unique
identifier
that
a
user
assigns
to
a
logical
volume.
VPD
See
vital
product
data.
VSE/ESA
An
IBM
operating
system,
the
letters
of
which
represent
virtual
storage
extended/enterprise
systems
architecture.
W
weight
distribution
area
The
area
that
is
required
to
distribute
the
weight
of
the
storage
unit.
worldwide
node
name
(WWNN)
A
unique
64-bit
identifier
for
a
host
that
contains
a
fibre-channel
port.
See
also
worldwide
port
name.
worldwide
port
name
(WWPN)
A
unique
64-bit
identifier
associated
with
a
fibre-channel
adapter
port.
It
is
assigned
in
an
implementation-
and
Glossary
351