to
fully
charge,
even
after
a
power
loss
of
only
a
few
minutes.
When
properly
charged,
both
full-charge
indicator
lights
on
the
front
of
the
battery
are
lit.
9.
Check
the
battery
indicator
lights,
as
shown
in
Figure
38.
Note:
If
the
Full
Charge-A
and
the
Full
Charge-B
indicator
lights
are
blinking,
the
battery
is
in
the
process
of
charging.
10.
After
your
battery
has
completed
the
self
test,
reset
the
battery
installation
date
using
the
storage-management
software.
The
software
continues
to
issue
battery-related
errors
if
the
installation
date
is
not
reset.
Storage
server
fan
The
storage
server
fan
is
a
single,
removable
unit
that
contains
two
cooling
fans
and
temperature
monitoring
circuitry.
The
storage
server
fan
plugs
directly
into
a
slot
on
the
front
of
the
DS4500
Storage
Server,
to
the
left
of
the
controllers
(see
Figure
40
on
page
52).
Five
indicator
lights
provide
overall
system
status
information
(see
Figure
41
on
page
53).
The
dual
fans
in
the
storage
server
fan
unit
provide
a
redundant
cooling
system
to
both
controller
CRUs.
If
one
fan
fails,
the
other
continues
to
operate,
providing
sufficient
air
circulation
to
prevent
the
controllers
from
overheating
until
you
can
replace
the
entire
storage
server
fan.
To
prevent
cooling
problems,
the
DS4500
Storage
Server
must
have
proper
air
circulation
throughout
the
chassis.
Cooling
problems
include
any
malfunctions
or
obstructions
that
impede
air
flow
and
cause
one
or
more
components
in
the
DS4500
Storage
Server
to
overheat.
Make
sure
that
the
ambient
air
temperature
around
the
DS4500
Storage
Server
is
within
the
environmental
requirements.
To
boost
air
circulation,
the
DS4500
Storage
Server
chassis
has
air
vents
along
its
top
and
sides.
These
vents
serve
as
air
intake
and
exhaust
passages.
Always
keep
vents
clean
and
free
of
obstructions
(Refer
to
the
IBM
DS4500
Fibre
Channel
Storage
Server
Installation
and
Support
Guide
for
operating
specifications).
Figure
38.
Battery
CRU
indicator
lights
50
IBM
TotalStorage
DS4500
Fibre
Channel
Storage
Server:
User’s
Guide
Summary of Contents for TotalStorage DS4500
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