Superdome Servers - I/O Expansion Cabinet Guide, Fifth Edition

Appendix A
System Specifications
Environmental Requirements
199
Environmental Requirements
This section provides the environmental, power dissipation, noise emission, and air flow specifications for the
IOX cabinet.
Temperature and Humidity Specifications
Ambient intake air temperature is often different from ambient room temperature; measure the operating
temperature and humidity directly in front of the cabinet cooling air intakes rather than check only ambient
room conditions. Table A-7 lists the computer room temperature and humidity specifications for the IOX.
NOTE Operating ranges refer to the ambient air temperature and humidity measured at the cabinet
cooling air intake vents.
Cabinet Power Dissipation
Table A-8 lists the power dissipations of the components of the IOX cabinet.
The entry for each component lists the individual power dissipation for that component that can be installed
in each cabinet.
The air conditioning data is derived from the following equations:
• Watts x (0.860) = kcal/hour
• Watts x (3.414) = Btu/hour
Table A-7 Temperature and Humidity Specification
Temperature and Humidity Specifications
a
a. These are recommended values. For operation outside these ranges, contact your
Hewlett-Packard sales representative.
Parameter Recommended Operating Range
Recommended Maximum Rate of Change
(per hour)
Temperature
b
b. At altitudes up to 3,000 meters.
68° to 86° F
(20° to 30° C)
9° F repetitive,
36° F nonrepetitive
(5° C repetitive,
20° C nonrepetitive)
Humidity 15% - 80%
with no condensation
6%