Dell PowerEdge R420 Technical Manual

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Table 26 details the environmental specifications for the R420. For the most up-to-date information,see theDell PowerEdge R420 Systems Owner’s Manual and theDell PowerEdge R420 GettingStarted Guide on Support.Dell.com/Manuals. For additional information about environmentalmeasurements for specific system configurations, see www.dell.com/environmental_datasheets.TemperatureContinuousoperation10°C to 35°C at 10% to 80% relative humidity (RH), with 26°C max dew point. De-ratemaximum allowable dry bulb temperature at 1°C per 300m above 900m (1°F per 550 ft).Expandedoperation10% of annual operating hours: 5°C to 40°C, 5% to 85% RH with 26°C dew point. Fortemperatures between 35°C and 40°C, the de-rate maximum allowable dry bulbtemperature is 1°C/175 m above 950 m (1°F per 319 ft).1% of annual operating hours: –5°C to 45°C, 5% to 90% RH with 26°C dew point. Fortemperatures between 40°C and 45°C de-rate maximum allowable dry bulb temperatureis 1°C/125 m above 950 m (1°F per 228 ft).Restrictions: No cold startup below 5°C. Maximum altitude of 3050 m (10,000 ft). Redundant PSU configuration required.Storage –40oC to 65oC (-40oF to 149oF) with a maximum temperature gradation of 20oC per hourRelative humidityOperating 20% to 80% (noncondensing) at a maximum wet bulb temperature of 29°C (84.2°F)Storage 5% to 95% at a maximum wet bulb temperature of 38°C (100.4°F)Maximum vibrationOperating 0.26 Grms at 5-350Hz in all orientationsStorage 1.87 Grms at 10-500Hz for 15 min (all six sides tested)Maximum shockOperating Half sine shock in all operational orientations of 31G +/– 5% with a pulse duration of2.6 ms +/– 10%Storage Half sine shock on all six sides of 71G +/– 5% with a pulse duration of 2 ms +/–10%;square wave shock on all six sides of 27G with velocity change at 235 in/sec or greaterAltitudeOperating –15.2m to 3048m (–50 to 10,000 ft); for altitudes above 2950 ft, the maximum operatingtemperature is de-rated 1oF/550 ftStorage –15.2m to 10,668m (–50 to 35,000 ft)Airborne contaminant levelClass G2 or lower as defined by ISA-S71.04-1985