Dell PowerEdge M820 Technical Guide - Page 41
Continuous, operation, Expanded, Expanded operation restrictions, Operating, Storage
![]() |
View all Dell PowerEdge M820 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 41 highlights
For additional information about environmental measurements for specific system configurations, see Dell.com/environmental_datasheets. Table 24 details the environmental specifications for the M820. Fresh Air: temperature, humidity, altitude de-rating Continuous operation Expanded operation 10°C to 35°C (50°F to 95°F) at 10% to 80% relative humidity with 26°C (78.8°F) maximum dew point (maximum wet bulb temperature). De-rate maximum allowable dry bulb temperature at 1°C per 300m above 950m (1°F per 547 ft above 3117 ft). When 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 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 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 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 228 ft above 3117 ft). Expanded operation restrictions: No cold startup below 5°C Install only 87mm wide heat sinks Do not install more than 40 DIMMs Temperature Operating Storage See Fresh Air for temperature information -40oC to 65oC (-40oF to 149oF) with a maximum temperature gradation of 20oC per hour Relative humidity Operating Storage See Fresh Air for relative humidity information 5% to 95% at a maximum wet bulb temperature of 33°C (91°F); atmosphere must be condensing at all times Maximum vibration Operating Storage 0.26 Grms at 5Hz to 350Hz for 15 minutes 1.54 Grms at 10Hz to 250Hz for 15 minutes 41 PowerEdge M820 Technical Guide
![](/manual_guide/products/dell-poweredge-m820-technical-guide-9c86dd1/41.png)