Acoustical noise
• Sound power levels, idle
– 4.0 bels, minimum
– 4.7 bels, typical
– 5.3 bels, maximum
• Sound power levels, operating
– 4.1 bels, minimum
– 4.7 bels, typical
– 5.3 bels, maximum
Notes:
• These sound power levels are measured in controlled acoustical environments according to procedures
specified by ISO 7779 and are reported in accordance with ISO 9296.
• The declared acoustic noise levels are based on specified configurations, which may change slightly
depending on configurations/conditions.
Environment
The server is supported in the following environment:
• Air temperature:
– Operating:
– ASHRAE class A2: 10–35°C (50–95°F); when the altitude exceeds 900 m (2953 ft), the maximum
ambient temperature value decreases by 1°C (1.8°F) with every 300 m (984 ft) of altitude increase.
– ASHRAE class A3: 5–40°C (41–104°F); when the altitude exceeds 900 m (2953 ft), the maximum
ambient temperature value decreases by 1°C (1.8°F) with every 175 m (574 ft) of altitude increase.
– ASHRAE class A4: 5–45°C (41–113°F); when the altitude exceeds 900 m (2953 ft), the maximum
ambient temperature value decreases by 1°C (1.8°F) with every 125 m (410 ft) of altitude increase.
– Server off: 5–45°C (41–113°F)
– Shipping or storage: -40–60°C (-40–140°F)
• Maximum altitude: 3050 m (10 000 ft)
• Relative humidity (non-condensing):
– Operating:
– ASHRAE class A2: 8%–80%; maximum dew point: 21°C (70°F)
– ASHRAE class A3: 8%–85%; maximum dew point: 24°C (75°F)
– ASHRAE class A4: 8%–90%; maximum dew point: 24°C (75°F)
– Shipping or storage: 8%–90%
• 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.
Note: Your server complies with ASHRAE class A2 specifications. The server performance might be
impacted when the operating temperature is outside the ASHRAE A2 specifications. Depending on the
hardware configuration, some server models comply with ASHRAE class A3 and class A4 specifications. To
comply with ASHRAE class A3 and class A4 specifications, the server models must meet the following
hardware configuration requirements at the same time:
Chapter 1. Introduction 11
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