Restoring
power
after
an
emergency
shutdown
Complete
the
following
steps
to
restart
the
storage
subsystem
if
you
turned
off
the
power-supply
switches
during
an
emergency
shutdown,
or
if
a
power
failure
or
a
power
outage
occurred:
1.
After
the
emergency
situation
or
when
power
is
restored,
check
the
storage
subsystem
for
damage.
If
there
is
no
visible
damage,
continue
with
step
2;
otherwise,
have
the
system
serviced.
2.
After
you
have
checked
for
damage,
make
sure
that
the
power-supply
switches
are
off;
then,
connect
the
power
cords
to
the
storage
subsystem.
3.
Complete
step
2
on
page
37
to
determine
the
correct
power-on
sequence
for
the
system.
4.
Complete
steps
3
on
page
37
and
4
on
page
37
to
turn
on
power
to
the
devices
in
the
system
and
to
check
the
status
of
the
storage
subsystem.
Restoring
power
after
an
overtemperature
shutdown
Complete
the
following
steps
to
restart
the
storage
subsystem
after
an
unexpected
shutdown
due
to
of
an
overtemperature
condition:
1.
Make
sure
that
the
power-supply
switches
on
the
back
of
the
storage
subsystem
are
turned
off.
2.
Do
whatever
is
necessary
to
cool
the
unit
(replace
the
power-supply-with-fan
units,
use
external
fans
to
cool
the
room,
and
so
on).
3.
Check
all
components
and
cables
for
visible
damage.
Do
not
start
the
storage
subsystem
if
you
find
evidence
of
damage.
4.
Complete
step
2
on
page
37
to
determine
the
correct
power-on
sequence
for
the
system.
5.
When
the
internal
temperature
of
the
storage
subsystem
is
below
45°C
(113°F),
complete
steps
3
on
page
37
and
4
on
page
37
to
turn
on
power
to
the
devices
in
the
system
and
to
check
the
status
of
the
storage
subsystem.
Monitoring
status
through
software
Use
the
ServeRAID
Manager
program
to
monitor
the
status
of
the
storage
subsystem.
Run
the
program
constantly,
and
check
it
frequently.
The
ServeRAID
Manager
program
provides
the
best
way
to
diagnose
and
repair
storage-subsystem
failures.
The
program
can
help
you:
v
Determine
the
nature
of
the
failure
v
Locate
the
failed
component
v
Determine
the
recovery
procedures
to
repair
the
failure
Although
the
storage
subsystem
has
fault
LEDs,
the
LEDs
do
not
necessarily
indicate
which
component
has
failed
or
must
be
replaced,
or
which
type
of
recovery
procedure
that
you
must
perform.
In
some
cases
(such
as
loss
of
redundancy
in
various
components),
the
fault
LED
is
not
lit.
Only
the
ServeRAID
Manager
program
can
detect
the
failure.
40
IBM
TotalStorage
DS300
and
DS400:
Hardware
Installation
and
User’s
Guide
Summary of Contents for TotalStorage DS300
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