Dell R420xr specs

Environmental

Temperature (Continuous Operation)

Temperature Ranges (for altitude less than 950 m	10 °C to 45 °C (50 °F to 113 °F) with no direct
or 3117 ft)	sunlight on the equipment.
Humidity Percentage Range	10% to 80% Relative Humidity with 26 °C (78.8
	°F) maximum dew point.
Relative Humidity
Storage	5% to 95% RH with 33 °C (91 °F) maximum dew
	point. Atmosphere must be non-condensing at
	all times.
Vibration
Operating	MIL-STD-810G, Method 514.6, Figure 514.6D-9,
	0.00220783 g2/Hz at 10-500 Hz (overall 1.04
	Grms), 1 hour per axis
Non-operating	MIL-STD-810G, Method 514.6, Figure 514.6,
	Procedure I, Category 4, Figure 514.6C-1 (US
	highway truck vibration), Vertical: 5-500 Hz at
	1.04 Grms, Transverse: 5-500 Hz at 0.204 Grms,
	Longitudinal: 5-500 Hz at 0.740 Grms, 1 hour
	per axis
Shock
Operating	MIL-STD-810G, Method 516.6, Procedure I,
	20G for rotational hard drives and 40G for solid
	state drives, 11 ms, saw tooth, 3 shocks, +/- per
	axis

Non-operating

Maximum Altitude

Operating

Storage

Operating Altitude De-rating

Up to 35 °C (95 °F)

35 °C to 40 °C (95 °F to 104 °F)

40 °C to 45 °C (104 °F to 113 °F)

Particulate Contamination

MIL-STD-810G, Method 516.6, Procedure V, 40G, 11 ms, saw tooth, 3 shocks, +/- per axis

3,048 m (10,000 ft).

12,192 m (40,000 ft).

Maximum temperature is reduced by 1 °C/300 m (1 °F/547 ft) above 950 m (3,117 ft).

Maximum temperature is reduced by 1 °C/175 m (1 °F/319 ft) above 950 m (3,117 ft).

Maximum temperature is reduced by 1 °C/125 m (1 °F/228 ft) above 950 m (3,117 ft).