ATTENTION:
Before
you
power
on
the
DS4000
storage
subsystem,
the
EXP100
must
be
populated
with
at
least
two
drives.
If
at
least
two
drives
are
not
installed
in
each
attached
storage
expansion
enclosure
when
you
power
on
the
DS4000,
your
standard
storage
partition
key
will
be
lost
and
will
need
to
be
regenerated
using
instructions
on
the
IBM
DS4000
Solutions
and
Premium
Features
Web
site:
www-912.ibm.com/PremiumFeatures/
All
of
the
drives
in
each
connected
EXP100
unit
must
contain
no
prior
configuration
data.
Additionally,
if
at
least
two
drives
are
not
installed
in
each
attached
EXP100,
the
resulting
insufficient
load
to
the
EXP100
power
supply
CRUs
might
cause
the
EXP100
power
supply
CRUs
to
intermittently
appear
as
failed
and
then
reappear
in
an
optimal
state,
falsely
indicating
that
the
power
supply
CRUs
are
bad.
If
this
is
the
first
time
that
you
power
on
the
DS4000
after
you
received
it
from
the
factory,
ensure
that
the
EXP100
storage
expansion
enclosure
with
at
least
two
drives
is
connected
to
the
DS4000
and
is
powered
on
before
you
power
on
the
DS4000.
Failure
to
do
this
will
prevent
the
DS4000
from
booting
up
with
the
factory
installed
premium
features
enabled
correctly.
In
addition,
consider
the
following
items:
v
The
storage
subsystem
supports
simultaneous
power-up
of
the
system
components;
however,
you
should
always
follow
the
power-up
sequence
listed
in
the
“Turning
on
the
storage
subsystem
section”
of
the
appropriate
DS4000
User’s
Guide
during
any
attended
power-up
procedure.
v
A
storage
system
in
an
optimal
state
should
recover
automatically
from
an
unexpected
shutdown
and
unattended
simultaneous
restoration
of
power
to
system
components.
After
power
is
restored,
contact
IBM
technical
support
if
any
of
the
following
conditions
occur:
–
The
storage
subsystem
logical
drives
and
arrays
do
not
display
in
the
Storage
Manager
graphical
user
interface
(GUI).
–
The
storage
subsystem
logical
drives
and
arrays
do
not
come
online.
–
The
storage
subsystem
logical
drives
and
arrays
seem
to
be
degraded.
Use
the
following
startup
sequence
to
turn
on
the
power
for
the
initial
startup
of
the
EXP100:
1.
Verify
that
the
following
conditions
exist:
v
All
communication
and
power
cables
are
plugged
into
the
back
of
the
expansion
enclosure
and
that
all
power
cables
are
connected
to
an
ac
power
outlet.
v
All
SATA
drive
CRUs
are
locked
securely
in
place
in
the
drive
slots
of
the
EXP100
expansion
enclosure
chassis.
v
The
enclosure
IDs
on
the
EXP100
expansion
enclosures
are
set
correctly.
(See
for
more
information.)
2.
Check
the
system
documentation
for
all
the
hardware
devices
that
you
intend
to
turn
on
and
determine
the
proper
startup
sequence.
Use
the
following
power-on
sequence,
where
applicable:
Chapter
2.
Installing
the
EXP100
59
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