Working with hot-swap cooling fans, Working, With – IBM Partner Pavilion DS4100 User Manual
Page 120: Hot-swap, Cooling, Fans, Locations
8.
Use
the
DS4000
Storage
Manager
client
to
monitor
the
status
of
the
new
drive
and
the
progress
of
the
data
reconstruction.
Wait
for
data
reconstruction
to
finish
(the
Drive
activity
LED
stops
flashing).
Note:
The
Drive
activity
LED
will
continue
to
flash
after
reconstruction
is
finished
if
there
is
I/O
activity
to
that
drive.
In
that
case,
use
the
host
software
to
determine
if
the
data
reconstruction
is
finished.
9.
When
reconstruction
is
finished
on
the
new
drive,
repeat
step
through
step
for
each
additional
drive
that
you
want
to
install.
10.
Use
the
DS4000
Storage
Manager
client
to
configure
the
additional
space
on
the
new
drives.
Working
with
hot-swap
cooling
fans
The
storage
server
cooling
system
consists
of
two
fan
CRUs,
each
containing
two
fans.
The
fan
CRUs
circulate
air
inside
the
unit
by
pulling
in
air
through
the
vents
on
the
front
of
the
drive
CRUs
and
pushing
out
air
through
the
vents
in
the
back
of
each
fan
CRU.
See
If
two
fans
fail,
or
the
fans
cannot
maintain
an
internal
temperature
below
70°
C
(158°
F),
the
power
supplies
in
the
unit
will
automatically
shut
down
(an
over-temperature
condition).
If
this
occurs,
you
must
cool
the
unit
and
restart
it.
See
Attention:
The
fans
in
the
storage
server
draw
in
fresh
air
and
force
out
hot
air.
These
fans
are
hot-swappable
and
redundant;
however,
when
one
fan
fails,
you
must
replace
the
fan
CRU
within
48
hours
to
maintain
redundancy
and
optimum
cooling.
When
you
replace
the
failed
fan
CRU,
be
sure
to
install
the
second
fan
CRU
within
10
minutes
to
prevent
any
overheating
due
to
the
lack
of
the
additional
fan
CRU.
Fan
CRUs
The
two
fan
CRUs
are
hot-swappable
and
redundant.
Fault
LEDs
These
amber
LEDs
light
when
a
fan
failure
occurs.
Latches
and
handles
Use
the
latches
and
handles
to
remove
or
install
the
fan
CRUs.
Attention:
Do
not
run
the
storage
server
without
adequate
ventilation
and
cooling,
because
it
might
cause
damage
to
the
internal
components
and
circuitry.
Fan CRU
Fan CRU
Handle
Handle
Latch
Latch
Fault LED
Fault LED
f10ug024
Figure
64.
Fan
locations
88
IBM
TotalStorage
DS4100
Storage
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Installation,
User’s,
and
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Guide