for
managing
storage
units
by
complementing
the
use
of
the
IBM
TotalStorage
DS
Storage
Manager
web-based
interface
and
the
DS
command-line
interface.
You
must
implement
the
DS
Open
API
through
the
IBM
TotalStorage
Common
Information
Model
(CIM)
agent,
a
middleware
application
that
provides
a
CIM-compliant
interface.
The
DS
Open
API
uses
the
CIM
technology
to
manage
proprietary
devices
as
open
system
devices
through
storage
management
applications.
The
DS
Open
API
allows
these
storage
management
applications
to
communicate
with
a
storage
unit.
DS8000
hardware
specifics
The
DS8000
models
offer
a
high
degree
of
availability
and
performance
through
the
use
of
redundant
components
that
can
be
replaced
while
the
system
is
operating.
You
can
use
the
DS8000
models
with
a
mix
of
different
operating
systems
and
clustered
and
nonclustered
variants
of
the
same
operating
systems.
Contributing
to
the
high
degree
of
availability
and
reliability
are
the
structure
of
the
DS8000
storage
unit,
the
host
systems
it
supports,
and
its
processor
memory
and
processor
speeds.
Storage
unit
structure
The
design
of
the
storage
unit,
which
contains
the
base
model
and
the
expansion
models,
contributes
to
the
high
degree
of
availability
that
is
associated
with
the
DS8000.
The
primary
components
that
support
high
availability
within
the
storage
unit
are
the
storage
server,
the
processor
complex,
and
the
rack
power
control
card.
The
storage
unit
also
has
redundant
fibre
switches,
with
fibre
fabric
connections
to
both
processor
complexes.
The
entire
power
system
at
all
levels
is
fully
redundant.
There
are
redundant
private
LAN
networks
between
each
storage
unit
and
the
management
consoles
(even
if
there
is
only
one
management
console).
Storage
unit
A
storage
unit
consists
of
a
storage
server
and
two
or
more
storage
(disk)
enclosures
that
are
packaged
in
one
or
more
racks
with
associated
power
supplies,
batteries,
and
cooling.
Storage
server
A
storage
server
consists
of
two
processor
complexes,
two
or
more
I/O
enclosures,
and
a
pair
of
rack
power
control
cards.
Processor
complex
A
processor
complex
controls
and
manages
the
storage
unit
to
perform
the
function
of
the
storage
server.
The
two
processor
complexes
form
a
redundant
pair
such
that
if
either
processor
complex
fails,
the
remaining
processor
complex
performs
all
storage
server
functions.
Rack
power
control
card
A
redundant
pair
of
rack
power
control
(RPC)
cards
coordinate
the
power
management
within
the
storage
unit.
The
RPC
cards
are
attached
to
the
service
processors
in
each
processor
complex,
the
primary
power
supplies
in
each
rack,
and
indirectly
to
the
fan/sense
cards
and
storage
enclosures
in
each
rack.
Multi-path
subsystem
device
driver
The
IBM
TotalStorage
Multi-path
subsystem
device
driver
(SDD)
provides
load
balancing
and
enhanced
data
availability
capability
in
configurations
with
more
than
one
I/O
path
between
the
host
server
and
the
DS8000
10
DS8000
User’s
Guide
Содержание TotalStorage DS8000
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