Dell PowerEdge R220 Technical Manual page 41

Fresh Air: temperature, humidity, altitude de-rating
Continuous 10°C to 35°C (50°F to 95°F) at 10% to 80% relative humidity with 29°C (84.2°F) maximum
operation dew point (maximum wet bulb temperature). De-rate maximum allowable dry bulb
temperature at 1°C per 300m above 950m (1°F per 547ft above 3117ft).
Expanded When operating in the expanded temperature range, system performance may be impacted,
operation and ambient temperature warnings may be reported in the System Event Log.
≤ 10% of annual operating hours: 5°C to 10°C and 35°C to 40°C (with no direct sunlight on
the equipment) at 5% to 85% relative humidity with 26°C dew point (maximum wet bulb
temperature). Outside the standard operating temperature (10°C to 35°C), the system can
operate down to 5°C or up to 40°C for a maximum of 10% of its annual operating hours. For
temperatures between 35°C and 40°C (95°F to 104°F), de-rate maximum allowable dry bulb
temperature by 1°C per 175m above 950m (1°F per 319ft above 3117ft).
≤ 1% of annual operating hours: –5°C to 5°C and 40°C to 45°C (with no direct sunlight on
the equipment) at 5% to 90% relative humidity with 26°C dew point (maximum wet bulb
temperature). Outside the standard operating temperature (10°C to 35°C), the system can
operate down to –5°C or up to 45°C for a maximum of 1% of its annual operating hours. For
temperatures between 40°C and 45°C (104°F to 113°F), de-rate maximum allowable dry bulb
temperature by 1°C per 125m above 950m (1°F per 228ft above 3117 ft).
Expanded operation restrictions:
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No cold startup below 5°C
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Maximum altitude for the operating temperature must be 3050m (10,000ft)
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Not supported:
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Temperature
Operating See Fresh Air for temperature information
Storage –40°C to 65°C (–40°F to 149°F) with a maximum temperature gradation of 20°C per hour
Relative humidity
Operating See Dell Fresh Air for relative humidity information
Storage 5% to 95% at a maximum wet bulb temperature of 33°C (91°F); atmosphere must be non-
condensing at all times
Maximum vibration
Operating 0.26 Grms at 5–350Hz for 15 min (in all operation orientations)
Storage 1.87 Grms at 10Hz to 500Hz for 15 minutes (all six sides tested)
Maximum shock
Operating One shock pulse in the positive z axis (one pulse on each side of the system) of 31 G for
2.6ms in the operational orientation.
Storage Six consecutively executed shock pulses in the positive and negative x, y and z axes (one
pulse on each side of the system) of 71 G for up to 2 ms.
Six consecutively executed shock pulses in the positive and negative x, y and z axes (one
pulse on each side of the system) of 32 G faired square wave pulse with velocity change at
270 inches/second (686 centimeters/second).
Dell PowerEdge R220 Technical Guide
Peripheral cards not qualified by Dell
Peripheral cards greater than 25W
PCIe SSD drives
GPU cards
Express flash
LRDIMM
Non-redundant PSU configurations
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