Lenovo x3550 M5 Installation And Service Manual page 23

– 900-watt high efficiency -48 V DC
– 1500-watt ac 80 PLUS Platinum
Note: Power supplies in the server must be with the same power rating or wattage.
Acoustical noise emissions:
• Sound power, idling: 6.5 bels maximum
• Sound power, operating: 6.5 bels maximum
Note: The PCIe options supported in this system vary greatly in function, power draw, and required
cooling. Any increase in cooling required by these options will result in increased fan speed and
produced sound power level. The actual sound pressure levels measured in your installation depend
upon a variety of factors, including the number of racks in the installation; the size, materials, and
configuration of the room; the noise levels from other equipment; the room ambient temperature and
pressure, and employees' location in relation to the equipment.
Heat output:
Approximate heat output:
• Minimum configuration: 460.62 Btu per hour (AC 135 watts)
• Maximum configuration: 3490 Btu per hour (AC 1023 watts)
Environment:
Server on:
• Temperature:
– 5°C to 40°C (41°F to 104°F)
– Altitude: 0 to 950 m (3,117 ft); decrease the maximum system temperature by 1°C for every
175-m increase in altitude.
• Humidity:
– Non-condensing: -12°C dew point (10.4°F)
– Relative humidity: 8% to 85%
• Maximum dew point: 24°C (75.2°F)
• Maximum altitude: 3,050 m (10,000 ft), 5°C to 28°C (41°F to 82°F)
• Maximum rate of temperature change:
– Tape drives: 5°C/hr (41°F/hr)
– Hard disk drives: 20°C/hr (68°F/hr)
Server off:
• Temperature: 5°C to 45°C (41°F to 113°F)
• Relative humidity: 8% to 85%
• Maximum dew point: 27°C (80.6°F)
Storage (non-operating):
• Temperature: 1°C to 60°C (33.8°F to 140°F)
• Maximum altitude: 3,050 m (10,000 ft)
• Relative humidity: 5% to 80%
• Maximum dew point: 29°C (84.2°F)
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Chapter 1 The Lenovo System x3550 M5 server
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