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Table 4. MAX5 expansion module features and operating specifications (continued)
Acoustical noise emissions: For
maximum system configurations (32
DIMMs installed)
v Sound power (idling): 6.2 bels
v Sound power (operating): 6.2 bels
v Sound pressure (idling): 48 dBA
v Sound pressure (operating): 48
dBA
Size:
v Height: 4.4 cm (1.73 in.)
v Depth: 72.4 cm (28.5 in.)
v Width: 48.3 cm (19.0 in.)
v Weight: approximately 12.8 kg
(28.2 lb) for a standard unit; when
fully configured, 15.4 kg (33.9 lb)
Fans:
v Five hot-swap 40 mm fans
Environment:
v Air temperature:
– Enclosure on: 10° to 35°C (50° to
95°F); altitude: 0 to 914.4 m
(3000 ft). Decreased system
temperature by 0.75° for every
1000 ft. increase in altitude.
– Enclosure off: 5° to 45°C (41° to
113`°F)
– Shipment: -40°C to +60°C (-40°F
to 140°F
v Humidity:
– Enclosure on: 20% to 80%;
maximum dew point: 21°C
(70°F)
– Enclosure off: 8% to 80%;
maximum dew point: 27°C
(80°F)
– Shipment: 5% to 100%
v Particulate contamination:
Attention: Airborne particulates
and reactive gases acting alone or
in combination with other
environmental factors such as
humidity or temperature might
pose a risk to the server. For
information about the limits for
particulates and gases, see
“Particulate contamination” on
page 123.
Heat output
Approximate heat:
v Minimum configuration: 314 Btu
per hour (92 watts)
v Maximum configuration 2048 Btu
per hour (600 watts)
Electrical input:
v Sine-wave input (50 - 60 Hz)
required
v Input voltage low range:
– Minimum: 90 V ac
– Maximum: 136 V ac
v Input voltage high range:
– Minimum: 198 V ac
– Maximum: 264 V ac
v Approximate input
kilovolt-amperes (kVA):
– Minimum: 0.1 kVA
– Maximum: 0.6 kVA
Note:
1. Power consumption and heat
output vary depending on the
number and type of optional
features that are installed and the
power-management optional
features that are in use.
2. These levels were measured in
controlled acoustical
environments according to the
procedures specified by the
American National Standards
Institute (ANSI) S12.10 and ISO
7779 and are reported in
accordance with ISO 9296. Actual
sound-pressure levels in a given
location might exceed the average
stated values because of room
reflections and other nearby noise
sources. The declared
sound-power levels indicate an
upper limit, below which a large
number of computers will
operate.
What the memory expansion module offers
The memory expansion module provides several features for easy operation,
including the following features:
v Replaceable components
The major replaceable components in the memory expansion module are dual
inline memory modules (DIMMs), fans, and power supplies. See “Memory
expansion module components” on page 81 for the components that the
expansion module supports.
24 IBM System x3850 X5 and x3950 X5 Types 7145, 7146, 7143, and 7191: Installation and User's Guide