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Chapter
8.
Optional
feature
codes
for
the
DS8000
The
DS8000
is
designed
to
meet
or
exceed
the
storage
requirements
of
a
broad
range
of
operating
environments.
There
are
many
features
that
are
enabled
to
meet
your
data
management
requirements.
The
following
two
areas
are
particularly
useful
for
data
management.
v
Parallel
Access
Volumes
(PAV)
used
for
zSeries
environments
v
Advanced
Copy
Services
functions
Parallel
Access
Volumes
This
feature
allows
multiple
z/OS
jobs
to
execute
in
parallel
and
queue
management
on
the
DS8000.
Dynamic
PAVs
autonomically
reconfigure
the
storage
subsystem
that
is
based
on
your
workload.
Advanced
Copy
Services
functions
The
advanced
Copy
Services
functions
are
sometimes
referred
to
as
the
IBM
TotalStorage
Resiliency
Family.
These
Copy
Services
functions
offer
a
variety
of
data
duplication,
data
migration,
and
disaster
recovery
solutions
that
are
supported
on
open
systems,
zSeries
®
,
and
Tivoli
®
Storage
Manager.
The
following
features
are
key
components
of
the
IBM
TotalStorage
Resiliency
Core
Technology:
v
IBM
TotalStorage
Point-in-time
copy,
previously
known
as
FlashCopy
®
v
Remote
Mirror
and
Copy,
previously
known
as
Peer-to-Peer
Remote
Mirror
(PPRC)
–
IBM
TotalStorage
Metro
Mirror,
previously
known
as
Synchronous
PPRC
–
IBM
TotalStorage
Global
Mirror,
previously
known
as
Asynchronous
PPRC
–
IBM
TotalStorage
Global
Copy,
previously
known
as
PPRC
Extended
Distance
v
IBM
TotalStorage
z/OS
®
Global
Mirror,
(previously
known
as
Extended
Remote
Copy
[XRC])
Note:
z/OS
Global
Mirror
(previously
known
as
Extended
Remote
Copy
or
XRC)
provides
a
long-distance
remote
copy
solution
across
two
sites
for
open
systems
and
z/OS
data
using
asynchronous
technology.
It
is
based
on
the
existing
Copy
Services
functions
called
Global
Copy
and
FlashCopy
and
additional
new
functions
that
form
consistency
groups
across
one
or
more
storage
units
to
manage
and
control
Global
Mirror
sessions.
Using
parallel
access
volumes
for
S/390
and
zSeries
hosts
This
section
provides
the
following
guidelines
for
using
parallel
access
volumes
(PAVs):
v
An
overview
of
PAVs
v
PAV
requirements
v
An
overview
of
the
input/output
configuration
program
(IOCP)
v
Guidelines
for
defining
the
logical
control
units
v
Guidelines
for
reconfiguring
the
logical
control
units
©
Copyright
IBM
Corp.
2004,
2005
99
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