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Table 23. Continuous Operation Specifications for ASHRAE A4
Temperature
Allowable operation
Temperature range for altitudes <= 900 m (<=
2953 ft)
Humidity percent range (non-condensing at all
times)
Operational altitude de-rating
Table 24. Common Environmental Specifications
Allowable operation
Maximum temperature gradient (applies to both
operation and non-operation)
Non-operational temperature limits
Non-operational humidity limits
Maximum non-operational altitude
Maximum operational altitude
Table 25. Maximum vibration specifications
Maximum vibration
Operating
Storage
Table 26. Maximum shock pulse specifications
Maximum shock pulse
Operating
Storage
Particulate and gaseous contamination specifications
The following table defines the limitations that help avoid any equipment damage or failure from particulate and gaseous
contamination. If the levels of particulate or gaseous pollution exceed the specified limitations and result in equipment damage
or failure, you may need to rectify the environmental conditions. Remediation of environmental conditions is the responsibility of
the customer.
Table 27. Particulate contamination specifications
Particulate contamination
Air filtration
Specifications
5 to 45°C (41 to 113°F) with no direct sunlight on the equipment
8% RH with -12°C minimum dew point to 90% RH with 24°C (75.2°F)
maximum dew point
Maximum temperature is reduced by 1°C/125 m (1.8°F/410 Ft) above 900
m (2953 Ft)
20°C in an hour* (36°F in an hour) and 5°C in 15 minutes (9°F in 15
minutes), 5°C in an hour* (9°F in an hour) for tape hardware
NOTE:
* - Per ASHRAE thermal guidelines for tape hardware, these are
not instantaneous rates of temperature change.
-40 to 65°C (-40 to 149°F)
5% to 95% RH with 27°C (80.6°F) maximum dew point
12,000 meters (39,370 feet)
3,050 meters (10,006 feet)
Specifications
0.21 G
at 5 Hz to 500 Hz for 10 minutes (all operation orientations)
rms
1.88 G
at 10 Hz to 500 Hz for 15 minutes (all six sides tested)
rms
Specifications
Six consecutively executed shock pulses in the positive and negative x, y,
and z axis of 6 G for up to 11 ms
Six consecutively executed shock pulses in the positive and negative x, y,
and z axis (one pulse on each side of the system) of 71 G for up to 2 ms
Specifications
Data center air filtration as defined by ISO Class 8 per ISO 14644-1
with a 95% upper confidence limit
NOTE:
This condition applies to data center environments only. Air
filtration requirements do not apply to IT equipment designed to be
used outside a data center, in environments such as an office or
factory floor.
Technical specifications
31
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