v
Input
Voltage:
–
Low
range:
-
Minimum:
90
V
ac
-
Maximum:
127
V
ac
–
High
range:
-
Minimum:
198
V
ac
-
Maximum:
257
V
ac
–
Input
kilovolt-amperes
(kVA)
approximately:
-
Minimum
configuration:
0.06
kVA
-
Maximum
configuration:
0.36
kVA
Environment
v
Air
temperature:
–
Expansion
unit
on:
10°
to
35°
C
(50°
to
95°
F)
Altitude:
0
to
914
m
(3000
ft.)
–
Expansion
unit
on:
10°
to
32°
C
(50°
to
90°
F)
Altitude:
914
m
(3000
ft.)
to
2133
m
(7000
ft.)
v
Humidity:
–
8%
to
80%
Acoustical
noise
emissions
values
For
open
bay
(0
drives
installed)
and
typical
system
configurations
(8
hard
drives
installed).
–
Sound
Power
(idling):
-
6.3
bels
(open
bay)
-
6.5
bels
(typical)
–
Sound
Power
(operating):
-
6.3
bels
(open
bay)
-
6.6
bels
(typical)
–
Sound
Pressure
(idling):
-
47
dBA
(open
bay)
-
49
dBA
(typical)
–
Sound
Pressure
(operating):
-
47
dBA
(open
bay)
-
50
dBA
(typical)
These
levels
are
measured
in
controlled
acoustical
environments
according
to
ISO
7779
and
are
reported
in
accordance
with
ISO
9296.
The
declared
sound
power
levels
indicate
an
upper
limit,
below
which
a
large
portion
of
machines
operate.
Sound
pressure
levels
in
your
location
might
exceed
the
average
1-meter
values
stated
because
of
room
reflections
and
other
nearby
noise.
114
IBM
TotalStorage
DS4000:
Hardware
Maintenance
Manual
Summary of Contents for System Storage DS4000
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