Environmental Specifications; Table 31. Environmental Specifications - Dell PowerEdge R720 Technical Manual

Environmental specifications

Table 31 details the environmental specifications for the R720 and R720xd. For additional
information about environmental measurements for specific system configurations, see
Dell.com/environmental_datasheets.
Fresh Air: temperature, humidity, altitude de-rating
Continuous
10°C to 35°C (50°F to 95°F) at 10% to 80% relative humidity with 26°C (78.8°F) maximum
operation 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).
Expanded
When operating in the expanded temperature range, system performance may be impacted,
operation
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
•
Maximum altitude for the operating temperature must be 3050m (10,000ft)
•
Redundant power supplies are required
•
Not supported:
-
-
-
-
-
-
-
•
For the PowerEdge R720, a maximum 130W processor is supported in either the 8- drive
bay or 16- drive bay chassis.
•
The following additional restrictions apply to PowerEdge R720xd:
-
-
-
Temperature
Operating See Fresh Air for temperature information
o
Storage
– 40 C to 65
Relative humidity
Operating
See Fresh Air for relative humidity information
Storage 5% to 95% at a maximum wet bulb temperature of 33°C (91°F); atmosphere must be
condensing at all times
PowerEdge R720 and R720xd Technical Guide
55
Table 31. Environmental specifications
Express Flash PCIe SSD
GPU
LRDIMM
130W 4- core processors
Non- redundant power supplies
Peripheral cards not qualified by Dell
Peripheral cards greater than 25W
Maximum 95W processor is supported on 3.5- inch hard drive chassis
Maximum 115 W processor is supported on 2.5- inch hard drive chassis
Only SSDs are supported in the hard drive slots on the back of the 3.5- inch hard
drive chassis.
o o o
C (- 40 F to 149 F) with a maximum temperature gradation of 20
o
C per hour