Dell PowerEdge R720 Technical Manual

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Dell PowerEdge R720 Technical Manual Manual pdf 57 page image

57 PowerEdge R720 and R720xd Technical GuideEnvironmental specificationsTable 31 details the environmental specifications for the R720 and R720xd. For additionalinformation about environmental measurements for specific system configurations, seeDell.com/environmental_datasheets.Table 31. Environmental specificationsFresh Air: temperature, humidity, altitude de-ratingContinuousoperation10°C to 35°C (50°F to 95°F) at 10% to 80% relative humidity with 26°C (78.8°F) maximumdew point (maximum wet bulb temperature). De-rate maximum allowable dry bulbtemperature at 1°C per 300m above 950m (1°F per 547 ft above 3117 ft).ExpandedoperationWhen operating in the expanded temperature range, system performance may be impacted,and ambient temperature warnings may be reported on the LCD and in the System EventLog.≤ 10% of annual operating hours: 5°C to 10°C and 35°C to 40°C (with no direct sunlight onthe equipment) at 5% to 85% relative humidity with 26°C dew point (maximum wet bulbtemperature). Outside the standard operating temperature (10°C to 35°C), the system canoperate down to 5°C or up to 40°C for a maximum of 10% of its annual operating hours. Fortemperatures between 35°C and 40°C (95°F to 104°F), de-rate maximum allowable dry bulbtemperature by 1°C per 175m above 950m (1°F per 319 ft above 3117 ft).≤ 1% of annual operating hours: –5°C to 5°C and 40°C to 45°C (with no direct sunlight onthe equipment) at 5% to 90% relative humidity with 26°C dew point (maximum wet bulbtemperature). Outside the standard operating temperature (10°C to 35°C), the system canoperate down to –5°C or up to 45°C for a maximum of 1% of its annual operating hours. Fortemperatures between 40°C and 45°C (104°F to 113°F), de-rate maximum allowable dry bulbtemperature by 1°C per 125m above 950m (1°F per 228 ft above 3117 ft).Expanded operation restrictions: No cold startup below 5°C Maximum altitude for the operating temperature must be 3050m (10,000ft) Redundant power supplies are required Not supported:- Express Flash PCIe SSD- GPU- LRDIMM- 130W 4-core processors- Non-redundant power supplies- Peripheral cards not qualified by Dell- Peripheral cards greater than 25W For the PowerEdge R720, a maximum 130W processor is supported in either the 8-drivebay or 16-drive bay chassis. The following additional restrictions apply to PowerEdge R720xd:- Maximum 95W processor is supported on 3.5-inch hard drive chassis- Maximum 115 W processor is supported on 2.5-inch hard drive chassis- Only SSDs are supported in the hard drive slots on the back of the 3.5-inch harddrive chassis.TemperatureOperating See Fresh Air for temperature informationStorage –40oC to 65oC (-40oF to 149oF) with a maximum temperature gradation of 20oC per hourRelative humidityOperating See Fresh Air for relative humidity information