where
LUNs
per
adapter
is
the
largest
number
of
LUNs
assigned
to
a
single
adapter.
To
set
the
ssd_max_throttle
parameter
for
the
storage
unit
LUNs
in
this
example,
add
the
following
line
to
the
/etc/system
file:
set
ssd:ssd_max_throttle=5
Attaching
a
storage
unit
to
a
Sun
host
using
Sun
Cluster
This
section
provides
instructions
for
attaching
a
storage
unit
to
a
Sun
host
using
Sun
Cluster.
See
the
Sun
Web
site
at
http://www.sun.com
for
up-to-date
documentation.
Attention:
Due
to
a
problem
found
in
two-node
SunCluster
implementations
on
a
storage
unit,
the
following
restriction
must
be
observed.
When
setting
up
a
two-node
SunCluster
3.
x
environment
with
MPxIO
for
multipathing,
it
is
mandatory
that
1:1
zoning
be
used;
that
is,
each
HBA
must
be
in
a
zone
that
contains
only
1
HBA
and
only
1
storage
unit
target
adapter.
To
ensure
that
this
relationship
is
maintained,
create
host
nickname
definitions
using
the
GUI
to
enforce
″
port
masking
″
that
allows
the
host
WWPN
to
login
only
to
the
desired
storage
unit
target
adapter.
This
zoning
and
port
masking
must
be
implemented
prior
to
assigning
any
storage
unit
LUNs
to
the
SunCluster
host
and
prior
to
attempting
any
SunCluster
configuration.
For
example:
Host
"Sun1"
with
2
HBAs:
"qlc0"
and
"qlc1"
Host
"Sun2"
with
2
HBAs:
"qlc0"
and
"qlc1"
DS6000
with
4
Target
adapters:
B1-C1
(cpsspc400)
B2-C1
(cpsspc600)
B3-C1
(cpsspc500)
B4-C1
(cpsspc700)
An
acceptable
zoning
configuration
would
be:
Sun1:qlc0
--
B1-C1
Sun1:qlc1
--
B4-C1
Sun2:qlc0
--
B2-C1
Sun2:qlc1
--
B3-C1
Note
that
this
configuration
uses
only
two
target
adapters,
but
each
is
paired
with
the
HBAs
in
separate
zones,
which
satisfies
the
requirement
that
each
initiator
be
in
a
zone
with
itself
and
only
1
target.
Another
acceptable
zoning
configuration
would
be:
zone
1:
Sun1:qlc0
--
B1-C1
zone
2:
Sun1:qlc1
--
B4-C1
zone
3:
Sun2:qlc0
--
B2-C1
zone
4:
Sun2:qlc1
--
B3-C1
This
restriction
is
unique
to
two-node
SunCluster
3.
x
.
with
MPxIO.
The
use
of
MPxIO
is
limited
to
Sun-branded
host
adapters,
thus
the
restriction
does
not
apply
to
other
adapter
brands
(AMCC,
Emulex,
QLogic).
180
DS6000
Host
Systems
Attachment
Guide
Summary of Contents for System storage DS6000 Series
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