Owners Manual
Expanded operating temperature
Table 28. Expanded operating temperature specications
Expanded operating temperature Specications
Continuous operation 5°C–40°C at 5% to 85% RH with 29°C dew point.
NOTE: Outside the standard operating temperature (10°C–35°C),
the system can operate continuously in temperatures as low as 5°C
and as high as 40°C.
For temperatures between 35°C–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–45°C at 5% to 90% RH with 29°C dew point.
NOTE: Outside the standard operating temperature (10°C–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, 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 LCD panel
and in the System Event Log.
Expanded operating temperature restrictions
• Do not perform a cold startup below 5°C.
• The operating temperature specied is for a maximum altitude of 3050 m (10,000 ft).
• 150 W/8 C, 165 W/12 C and higher wattage processor(TDP>165 W) are not supported.
• Redundant power supply unit is required.
• Non-Dell qualied peripheral cards and/or peripheral cards greater than 25 W are not supported.
• PCIe SSD is not supported.
• 3DX Point DIMMs and NVDIMMs-N are not supported.
• Rear installed drives are not supported
• Tape backup unit is not supported.
Thermal restrictions
The following table lists the congurations required for ecient cooling.
Table 29. Thermal restrictions
conguration
Conguration Number of
processors
Heatsink Processor/
DIMM blank
DIMM blanks Maximum number
of DIMM blanks
Fan
XC640 Series (2.5 inch
hard drives x 10)
1 Two 1U 2-pipe heat
sink for
Not required Required 22 blanks Eight high
performance fans
28 Technical specications