Heat output, airflow, and cooling, Heat, Output – IBM Partner Pavilion DS4100 User Manual
Page 47: Airflow, Cooling, Totalstorage, Ds4100, Power, Requirements, Table
Table
10.
IBM
TotalStorage
DS4100
AC
power
requirements
Low
Range
High
Range
Nominal
Voltage
90
to
136
VAC
180
to
264
VAC
Frequency
50
to
60
Hz
50
to
60
Hz
Idle
Current
2.50
A
a
1.33
A
b
Maximum
Operating
Current
3.01
A
a
1.57
A
b
a.
Typical
voltage:
115
V
AC,
60
Hz
at
77%
power-supply
efficiency
and
0.96
power
factor
b.
Typical
voltage:
230
V
AC,
60
Hz
at
77%
power-supply
efficiency
and
0.96
power
factor
Heat
output,
airflow,
and
cooling
The
maximum
heat
output
of
the
DS4100
is
390
watts
(1235
BTU/hr).
Each
DS4100
rack-mounted
unit
requires
an
airflow
of
2.5
m
3
(87
ft
3
)
per
minute.
The
input
air
temperature
to
all
rack
cabinets
should
be
in
the
range
10°
C
-
35°
C
(50°
F
-
95°
F).
The
recommended
operating
temperature
is
22°
C
(72°
F).
When
rack
cabinets
that
contain
many
DS4100s
are
to
be
installed
together,
the
following
requirements
must
be
met
to
ensure
that
the
DS4100s
are
adequately
cooled:
v
Air
enters
at
the
front
of
the
rack
cabinet
and
leaves
at
the
back.
To
prevent
the
air
that
is
leaving
the
rack
cabinet
from
entering
the
intake
of
another
piece
of
equipment,
you
must
position
the
rack
cabinets
in
alternate
rows,
back-to-back
and
front-to-front.
This
arrangement
is
known
as
“cold
aisle/hot
aisle”
and
is
shown
in
v
Where
rack
cabinets
are
in
rows,
each
rack
cabinet
must
touch
the
rack
cabinet
that
is
next
to
it
to
reduce
the
amount
of
hot
air
that
can
flow
around
from
the
back
of
the
rack
into
the
intakes
of
the
storage
servers
that
are
in
that
rack
cabinet.
You
should
use
Suite
Attach
Kits
to
completely
seal
any
gaps
that
remain
between
the
rack
cabinets.
For
details
about
Suite
Attach
Kits,
contact
your
marketing
representative.
v
Where
rack
cabinets
are
in
rows
front-to-front
or
back-to-back,
a
gap
of
at
least
1220
mm
(48
in.)
must
separate
the
rows
across
the
cold
aisle.
v
To
ensure
correct
airflow
in
each
rack
cabinet,
the
rack
filler
plates
must
be
installed
in
unused
positions.
Also,
all
the
gaps
in
the
front
of
the
rack
cabinets
must
be
sealed,
including
the
gaps
between
the
storage
servers.
Chapter
1.
Introduction
15