consistent
copy
In
a
Metro
or
Global
Mirror
relationship,
a
copy
of
a
secondary
virtual
disk
(VDisk)
that
is
identical
to
the
primary
VDisk
from
the
viewpoint
of
a
host
system,
even
if
a
power
failure
occurred
while
I/O
activity
was
in
progress.
consistent-stopped
In
a
Global
Mirror
relationship,
the
state
that
occurs
when
the
secondary
virtual
disk
(VDisk)
contains
a
consistent
image,
but
the
image
might
be
out-of-date
with
respect
to
the
primary
VDisk.
This
state
can
happen
when
a
relationship
was
in
the
consistent-synchronized
state
when
an
error
occurred
that
forced
a
freeze
of
the
consistency
group.
This
state
can
also
happen
when
a
relationship
is
created
with
the
create-consistent
flag
set
to
TRUE
.
consistent-synchronized
In
a
Global
Mirror
relationship,
the
status
condition
that
occurs
when
the
primary
virtual
disk
(VDisk)
is
accessible
for
read
and
write
I/O
operations.
The
secondary
VDisk
is
accessible
for
read-only
I/O
operations.
See
also
primary
virtual
disk
and
secondary
virtual
disk
.
container
A
data
storage
location;
for
example,
a
file,
directory,
or
device.
A
software
object
that
holds
or
organizes
other
software
objects
or
entities.
copied
In
a
FlashCopy
mapping,
a
state
that
indicates
that
a
copy
has
been
started
after
the
copy
relationship
was
created.
The
copy
process
is
complete
and
the
target
disk
has
no
further
dependence
on
the
source
disk.
copying
A
status
condition
that
describes
the
state
of
a
pair
of
virtual
disks
(VDisks)
that
have
a
copy
relationship.
The
copy
process
has
been
started
but
the
two
virtual
disks
are
not
yet
synchronized.
Copy
Services
The
services
that
enable
you
to
copy
virtual
disks
(VDisks):
FlashCopy,
Metro,
and
Global
Mirror.
counterpart
SAN
A
nonredundant
portion
of
a
redundant
storage
area
network
(SAN).
A
counterpart
SAN
provides
all
the
connectivity
of
the
redundant
SAN
but
without
the
redundancy.
Each
counterpart
SANs
provides
an
alternate
path
for
each
SAN-attached
device.
See
also
redundant
SAN
.
cross-volume
consistency
In
SAN
Volume
Controller,
a
consistency
group
property
that
guarantees
consistency
between
virtual
disks
when
an
application
issues
dependent
write
operations
that
span
multiple
virtual
disks.
D
data
migration
The
movement
of
data
from
one
physical
location
to
another
without
disrupting
I/O
operations.
degraded
Pertaining
to
a
valid
configuration
that
has
suffered
a
failure
but
continues
to
be
supported
and
legal.
Typically,
a
repair
action
can
be
performed
on
a
degraded
configuration
to
restore
it
to
a
valid
configuration.
166
IBM
System
Storage
SAN
Volume
Controller:
Hardware
Installation
Guide
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