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*
DEFINE
2107-9A2
LOGICAL
CONTROL
UNIT
5
*
*
*
**********************************************************************
CNTLUNIT
CUNUMBR=7005,PATH=(74,75,FC,FD),UNITADD=((00,256)),
*
LINK=(24,2D,34,3D),CUADD=5,UNIT=2107
**********************************************************************
*
DEFINE
3390-3
BASE
AND
ALIASES
ADDRESS
ON
LOGICAL
CONTROL
UNIT
5
*
*
32
BASE
ADDRESS,
3
ALIASES
PER
BASE
*
*
*
**********************************************************************
IODEVICE
ADDRESS=(9500,032),CUNUMBR=(7005),STADET=Y,UNIT=3390B
IODEVICE
ADDRESS=(95A0,096),CUNUMBR=(7005),STADET=Y,UNIT=3390A
**********************************************************************
Guidelines
for
defining
the
logical
control
unit
for
the
DS8000
You
can
use
these
guidelines
to
define
the
logical
control
unit
for
the
DS8000.
You
need
the
following
information
in
order
to
define
the
logical
control
unit
(LCU):
v
Which
devices
(arrays)
are
3380
format,
and
which
are
3390
format
v
Which
devices
have
PAVs,
and
which
do
not
v
How
many
devices
you
define
to
a
given
LCU
Note:
1.
An
LCU
is
equivalent
to
a
logical
subsystem
(LSS).
Like
an
LSS,
an
LCU
can
have
a
maximum
of
256
logical
devices
or
volumes.
2.
Every
device
has
a
single
unit
address
(in
range
00
-
FF).
3.
An
LCU
can
manage
a
maximum
of
256
devices
and
identifies
a
device
based
on
the
unit
address.
Update
the
I/O
configuration
with
the
appropriate
devices,
using
the
following
guidelines:
v
Three
device
types
are
possible
for
3380:
3380,
3380B,
and
3380A.
v
Three
device
types
are
possible
for
3390:
3390,
3390B,
and
3390A.
v
Any
non-PAV
3380
is
a
3380,
regardless
of
model.
v
Any
non-PAV
3390
is
a
3390,
regardless
of
model.
v
Any
3380
PAV
base
is
a
3380B.
v
Any
3390
PAV
base
is
a
3390B.
v
Any
alias
of
a
3380B,
regardless
of
model,
is
a
3380A.
v
Any
alias
of
a
3390B,
regardless
of
model,
is
a
3390A.
v
Only
define
the
actual
base
and
alias
devices
to
IOCP
or
HCD
to
avoid
unnecessary
definition
of
processor
subchannels.
v
Only
define
the
unit
address
range
to
IOCP
or
HCD
as
necessary
for
the
installed
devices
in
an
LCU
(64,
128,
or
256).
Defining
the
unit
address
range
enables
you
to
put
more
LCUs
and
devices
on
a
channel
path.
IBM
recommends
that
you
document
the
configuration
you
define
for
the
DS8000.
With
the
exception
of
the
3380
and
3390
models,
the
DS8000
configuration
and
the
IOCP
input
must
match.
Note:
The
CU
device
is
a
2107
for
any
DS8000
device
type.
In
HCD
you
can
use
3990
as
a
control-unit
type
for
3380
and
3390
devices.
However,
you
must
use
2107
as
the
control-unit
type
for
3380B,
3380A,
3390B,
and
3390A
devices.
Chapter
8.
Optional
feature
codes
for
the
DS8000
103
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