The
key
elements
of
Advanced
Policy
Management
are
storage
management
constructs
and
storage
pools.
Storage
Management
Constructs
Storage
management
constructs
are
user-defined
groupings
used
to
define
actions
for
logical
volumes.
Each
construct
type
can
have
a
maximum
of
256
names
including
the
default
name.
The
default
name
is
8
blanks
and
is
displayed
on
the
Library
Manager
and
the
Specialist
as
8
dashes
(-).
Each
construct
type
has
an
8
character
name
and
a
70
character
description.
These
can
be
defined
through
the
Library
Manager
(Manage
Constructs
and
Pools)
or
the
Specialist
(Manage
Constructs).
How
the
construct
names
are
assigned
to
a
logical
volume
or
set
of
volumes
can
be
used
to
provide
creative
volume
grouping.
For
instance,
two
sets
of
volumes
assigned
to
two
separate
Storage
Groups
(primary
storage
pool)
can
be
assigned
to
the
same
Management
Class
(secondary
storage
pool).
This
allows
a
single
storage
pool
to
be
used
as
a
secondary
pool
for
volumes
which
have
multiple
primary
storage
pools.
Important:
Constructs
are
defined
separately
for
each
VTS
in
a
PtP
configuration.
Any
constructs
entered
on
one
VTS
also
need
to
be
entered
in
the
other
library.
Entering
the
constructs
for
one
library
does
not
fully
configure
the
machine.
Both
libraries
need
to
be
configured
with
the
same
constructs
in
order
to
have
the
machine
operate
as
intended.
There
are
four
storage
construct
types:
v
Storage
Group
v
Management
Class
v
Storage
Class
v
Data
Class
Storage
Group
Used
to
define
a
primary
storage
pool
for
a
logical
volume.
A
primary
storage
pool
is
where
logical
volumes
assigned
to
the
specific
storage
group
are
to
be
written
to.
For
example,
logical
volume
LOG001
is
assigned
to
storage
group
″
BACKUP.
″
Storage
Group
″
BACKUP
″
is
defined
with
a
Primary
Storage
Pool
of
3.
When
LOG001
is
written
to
a
stacked
volume
it
will
be
written
to
a
stacked
volume
that
is
in
pool
3.
Multiple
Storage
Groups
can
define
the
same
primary
storage
pool.
Valid
Primary
Storage
Pools
are
1
-
32.
Management
Class
Used
to
define
a
secondary
storage
pool
and
a
Peer-to-Peer
Copy
Mode
for
a
logical
volume,
and
also
to
enable
the
Peer-to-Peer
Selective
Dual
Copy
feature,
if
desired.
A
secondary
storage
pool
of
zero
(0)
indicates
a
second
copy
is
not
made
for
logical
volumes
assigned
to
the
management
class.
If
the
management
class
a
logical
volume
is
assigned
to
has
a
secondary
storage
pool
of
1
-
32,
a
second
copy
of
the
volume
is
made
onto
a
stacked
volume
in
this
pool.
For
example,
logical
volume
LOG001
is
assigned
to
management
class
″
DUPCOPY.
″
Management
Class
″
DUPCOPY
″
is
defined
with
a
secondary
70
3494
Tape
Library
Operator
Guide
Summary of Contents for TotalStorage 3494 Tape Library
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