Expanded operating temperature
Table 34. Expanded operating temperature specifications
Expanded operating temperature
Specifications
Continuous operation
5°C to 40°C at 5% to 85% RH with 29°C dew point.
NOTE:
Outside the standard operating temperature (10°C to
40°C), the system can operate continuously in temperatures as low
as 5°C and as high as 40°C.
For temperatures between 35°C and 40°C, de-rate maximum allowable
temperature by 1°C per 175 m above 950 m (1°F per 319 ft).
≤ 1% of annual operating hours
–5°C to 45°C at 5% to 90% RH with 29°C dew point.
NOTE:
Outside the standard operating temperature (10°C to
40°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, de-rate maximum allowable
temperature by 1°C per 125 m above 950 m (1°F per 228 ft).
NOTE:
When operating in the expanded temperature range, system performance may be impacted.
NOTE:
When operating in the expanded temperature range, ambient temperature warnings may be reported on the bezel's LCD
panel and in the System Event Log.
Expanded operating temperature restrictions
•
Do not perform a cold startup below 5°C.
•
The operating temperature specified is for a maximum altitude of 3050 m (10,000 ft).
•
Higher wattage processor [Thermal Design Power (TDP) >=165 W] are not supported.
•
Non-Dell qualified peripheral cards and/or peripheral cards greater than 30 W are not supported.
•
PCIe SSD is not supported.
•
NVDIMM is not supported.
Thermal
PowerEdge servers have an extensive collection of sensors that automatically track thermal activity, which helps regulate temperature
thereby reducing server noise and power consumption. The sensors in the MX840c interact with the chassis management services module
which regulates fan speed. All fans which cool the MX840c are contained in the MX7000 chassis.
Thermal management of PowerEdge MX840c delivers high performance for the right amount of cooling to components at the lowest fan
speeds across a wide range of ambient temperatures from 10°C to 35°C (50°F to 95°F) and to extended ambient temperature ranges
(see Environmental Specifications). The benefits to you are lower fan power consumption (lower server system power and data center
power consumption) and greater acoustical versatility.
Technical specifications
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