Lenovo ThinkSystem SR650 Series Setup Manual page 16

Table 1. Server specifications (continued)
Specification
Acoustical noise emissions
Environment
12
ThinkSystem SR650 Setup Guide
Description
• Sound power levels, idle
– 4.9 bels, minimum
– 5.1 bels, typical
– 6.1 bels, maximum
• Sound power levels, operating
– 5.1 bels, minimum
– 5.1 bels, typical
– 6.2 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 configuration and conditions.
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:
• Two power supplies installed
• NVMe drives not installed