v
Up
to
16
host
adapters
v
Up
to
320
disk
drives
(up
to
96
TB
of
capacity)
With
these
separate
resources,
each
Storage
System
LPAR
can
run
the
same
or
different
versions
of
microcode,
and
can
be
used
for
completely
separate
production,
test,
or
other
unique
storage
environments
within
this
single
physical
system.
This
may
enable
storage
consolidations
where
separate
storage
subsystems
were
previously
required,
helping
to
increase
management
efficiency
and
cost
effectiveness.
Copy
Services
Copy
Services
is
a
collection
of
functions
that
provides
disaster
recovery,
data
migration,
and
data
duplication
functions.
Copy
Services
runs
on
the
IBM
TotalStorage
DS8000
storage
unit
and
supports
open
systems
and
zSeries
environments.
Many
design
characteristics
and
advanced
functions
of
the
DS8000
contribute
to
protection
of
your
data.
DS8000
has
a
number
of
advanced
Copy
Services
functions
that
are
part
of
the
IBM
TotalStorage
Resiliency
family.
These
functions
are
supported
also
on
the
previous
generation
of
storage
systems
called
the
IBM
TotalStorage
Enterprise
Storage
Server
(ESS).
Copy
Services
include
the
following
types
of
functions:
v
FlashCopy,
which
is
a
point-in-time
copy
function
v
Remote
mirror
and
copy
functions
(previously
known
as
Peer-to-Peer
Remote
Copy
or
PPRC),
which
includes:
–
IBM
TotalStorage
Metro
Mirror
(previously
known
as
Synchronous
PPRC)
–
IBM
TotalStorage
Global
Copy
(previously
known
as
PPRC
Extended
Distance)
–
IBM
TotalStorage
Global
Mirror
(previously
known
as
Asynchronous
PPRC)
v
z/OS
Global
Mirror
(previously
known
as
Extended
Remote
Copy
[XRC])
You
can
manage
Copy
Services
functions
through
a
command-line
interface
called
the
IBM
TotalStorage
DS
CLI
and
a
new
Web-based
interface
called
the
IBM
TotalStorage
DS
Storage
Manager.
The
DS
Storage
Manager
allows
you
to
set
up
and
manage
the
following
types
of
data-copy
functions
from
any
point
from
which
network
access
is
available:
FlashCopy
The
FlashCopy
feature
enables
you
to
create
full
volume
copies
of
data.
When
you
set
up
a
FlashCopy
operation,
a
relationship
is
established
between
source
and
target
volumes,
and
a
bitmap
of
the
source
volume
is
created.
Once
this
relationship
and
a
bitmap
are
created,
the
target
volume
can
be
accessed
as
though
all
the
data
had
been
physically
copied.
While
a
relationship
between
the
source
and
target
volume
exists,
a
background
process
copies
the
tracks
from
the
source
to
the
target
volume.
FlashCopy
is
an
optional
function.
To
use
it,
you
must
purchase
the
point-in-time
2244
function
authorization
model,
which
is
2244
Model
PTC.
Remote
Mirror
and
Copy
The
remote
mirror
and
copy
feature
is
a
flexible
data
mirroring
technology
that
allows
replication
between
volumes
on
two
or
more
disk
storage
systems.
You
can
also
use
this
feature
for
data
backup
and
disaster
recovery.
16
DS8000
User’s
Guide
Содержание TotalStorage DS8000
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