46 PowerEdge R520 Technical Guide Non-redundant power supplies not supported Non Dell-qualified peripheral cards and/or cards greater than 25W are not supportedTemperatureOperating See Dell Fresh Air for temperature informationStorage –40oC to 65oC (-40oF to 149oF) with a maximum temperature gradation of 20oC per hourRelative humidityOperating See Dell Fresh Air for relative humidity informationStorage 5% to 95% at a maximum wet bulb temperature of 33°C (91°F); atmosphere must be non-condensing at all timesMaximum vibrationOperating 0.26 Grms at 5Hz to 350Hz in all orientationsStorage 1.87 Grms at 10Hz to 500Hz for 15 minutes (all six sides tested)Maximum shockOperating Half sine shock in all operational orientations of 31G +/– 5% with a pulse duration of 2.6ms+/– 10%Storage Half sine shock on all six sides of 71G +/– 5% with a pulse duration of 2ms +/–10%; squarewave shock on all six sides of 27G with velocity change at 235 in/sec or greaterAltitudeOperating –15.2m to 3048m (–50 ft to 10,000 ft)Storage –15.2m to 12,000m (–50 ft to 39,370 ft)Airborne contaminant levelClass G1 or lower as defined by ISA-S71.04-1985Video specificationsThe Dell PowerEdge R520 iDRAC incorporates an integrated video subsystem. The graphicscontroller is the 2D Matrox® G200. The video frame buffer (16MB) is contained within the iDRACRAM (256MB) device.The R520 system supports the 2D graphics video modes listed in Table 26.Table 26. Supported video modesResolution Refresh Rate (Hz) Color Depth (bit)640 x 480 60, 70 8, 16, 32800 x 600 60, 75, 85 8, 16, 321024 x 768 60, 75, 85 8, 16, 321152 x 864 60, 75, 85 8, 16, 321280 x 1024 60, 75 8, 16, 32Rack rail specificationsTable 27 lists the spacing dimensions for the R520 sliding and static rails.