![background image](http://html1.mh-extra.com/html/ibm/totalstorage-ds8000/totalstorage-ds8000_user-manual_4109708141.webp)
as
a
conduit)
to
a
target
storage
unit
to
establish
a
FlashCopy
relationship
at
the
target
site.
This
eliminates
the
need
for
a
network
connection
to
the
target
site
solely
for
the
management
of
FlashCopy.
Limitation:
Remote
FlashCopy
commands
are
used
to
establish
a
FlashCopy
relationship
at
the
target
(remote)
site
when
a
connection
to
target
site
is
lost.
The
Remote
FlashCopy
operation
is
not
supported
through
the
DS
Storage
Manager
because
connections
to
both
the
source
and
target
sites
are
required.
If
the
connection
to
the
target
site
is
lost,
the
DS
Storage
Manager
cannot
connect
to
the
target
site.
The
following
example
illustrates
the
required
steps
for
a
Remote
FlashCopy
operation.
You
can
perform
all
steps
from
the
DS
CLI.
If
you
used
the
DS
Storage
Manager
for
Steps
1
and
2,
you
must
perform
Step
3
from
the
DS
CLI.
1.
Create
paths
between
the
source
LSS
and
the
target
LSS.
For
example,
IBM.2107-1600661/00
and
IBM.2107-1306875/00
2.
Create
Metro
Mirror
volume
pairs
from
the
source
LSS
to
the
target
LSS
for
example,
volume
A
(IBM.2107-1300861/0001)
from
LSSA
and
volume
B
(IBM.2107-1300871/0001)
from
LSSB.
3.
Enable
a
Remote
FlashCopy
operation
at
the
target
site
using
volume
B
as
the
source
volume
and
volume
C
as
the
target
volume
Assume
that
the
target
site
connection
is
lost.
You
can
create
the
FlashCopy
relationship
from
volume
B
to
volume
C
(both
from
the
target
site).
However,
you
cannot
use
the
DS
Storage
Manager
for
this
step
because
connections
to
the
target
site
are
lost.
Assume
that
you
performed
Step
1
and
Step
2
from
the
DS
Storage
Manager
(connections
to
both
storage
units
at
the
source
and
target
sites
were
available)
and
the
Metro
Mirror
relationship
between
the
volume
pair
still
exists.
To
create
the
Remote
FlashCopy
operation,
you
must
perform
Step
3
from
the
DS
CLI
using
the
following
command
as
an
example:
dscli>mkremoteflash
-dev
IBM.2107-75FA120
-conduit
IBM.2107-75FA150/10
0100:0200
where:
dev
Specifies
the
storage
image
ID,
which
includes
manufacturer,
type,
and
serial
number.
conduit
LSS_ID
(Required)
Identifies
the
source
LSS
of
an
existing
remote
mirror
and
copy
relationship
that
is
used
as
a
conduit
for
communicating
with
the
target
storage
image
.
The
source
volume
IDs
that
are
specified
in
source_volume_ID:target_volume_ID
must
be
the
target
volumes
in
a
remote
mirror
and
copy
relationship
in
which
one
of
the
conduit
LSS
volumes
acts
as
a
source
volume.
You
can
specify
a
fully
qualified
LSS
ID,
which
includes
the
storage
image
ID.
source_volume_ID:target_volume_ID
(Required)
Establishes
a
remote
FlashCopy
relationship
for
the
source
and
target
volume
pairs
with
the
specified
IDs.
You
can
specify
fully
qualified
volume
IDs,
which
includes
storage
image
IDs,
or
a
shortened
version
without
storage
image
IDs
if
the
-dev
parameter
is
specified.
Separate
the
IDs
of
the
FlashCopy
relationships
with
spaces.
Chapter
8.
Optional
feature
codes
for
the
DS8000
115
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Содержание TotalStorage DS8000
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