Dell EMC PowerEdge T640, Installation And Service Manual

Page: 35 / 169

Operating temperature de-rating Specifications
40°C to 45°C (104°F to 113°F) Maximum temperature is reduced by 1°C/125 m (1°F/228 ft) above 950 m
(3,117 ft).
Standard operating temperature
Table 22. Standard operating temperature specifications
Standard operating temperature Specifications
Continuous operation (for altitude less than 950 m or 3117
ft) 10°C to 35°C (50°F to 95°F) with no direct sunlight on the equipment.
Expanded operating temperature
Table 23. 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
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 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
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 maybe reported in the System Event
Log.
Expanded operating temperature restrictions and Fresh Air restrictions
• Six hot swappable fans (standard fans) are required.
• Two PSUs in redundancy mode are required, but PSU failure is not supported.
• 3.5-inch x 18 hard drives is not supported.
• NVMe or PCIe SSD is not supported.
• GPGPU is not supported.
• Processor > 165 W is not supported.
• Internal TBU (tape backup drive) is not supported.
Technical specifications 35