HP Integrity rx8620 Server User Service Guide

CommentsVAWattsPower Required (50 - 60 Hz)
See #1 below54005292Maximum Theoretical Power
30A @ 180 VAC, see
note #2
5400---Marked Electrical Power
See note #338003724Typical Maximum Power
• “Maximum theoretical power” is used to describe input power at the AC input. It is expressed
in Watts and Volt-Amps to take into account power factor correction. The calculated sum
is the maximum worst case power consumption for every subsystem in the server. This
number will not be exceeded by a properly functioning server for any combination of
hardware and software.
• “Marked electrical power” is the input power measured at the ac input expressed in
Volt-Amps. The marked electrical power is the rating given on the chassis label and represents
the input power required for facility AC power planning and wiring requirements. This
number represents the expected maximum power consumption for the server based on the
power rating of the bulk power supplies. This number can safely be used to size ac circuits
and breakers for the system.
• “Typical maximum power” is the input power measured at the AC input expressed in Watts
and Volt-Amps, and the measured maximum worst case power consumption. This number
represents the largest power consumption for the server under laboratory conditions, using
aggressive software applications designed specifically to work the system at maximum loads
and power consumption.
Environmental Specifications
This section provides the environmental, power dissipation, noise emission, and air flow
specifications for the server.
Temperature and Humidity
The cabinet is actively cooled using forced convection in a Class C1-modified environment. The
recommended humidity level for Class C1 is 40 to 55% relative humidity (RH).
Operating Environment
The system is designed to run continuously and meet reliability goals in an ambient temperature
of 5° C–35° C at sea level. The maximum allowable temperature is derated 1° C per 1,000 feet of
elevation above 5,000 feet above sea level up to 30° C at 10,000 feet. For optimum reliability and
performance, the recommended operating range is 20° C to 25° C. This meets or exceeds the
requirements for Class 2 in the corporate and ASHRAE standard. See Table C-4 on page 210.
Environmental Temperature Sensor
To ensure that the system is operating within the published limits, the ambient operating
temperature is measured using a sensor placed on the server backplane. Data from the sensor is
used to control the fan speed and also to initiate system overtemp shutdown.
Non-Operating Environment
The system is designed to withstand ambient temperatures between -40° C to 70° C under
non-operating conditions.
Cooling
Internal Chassis Cooling
The cabinet incorporates front-to-back airflow across the system backplane. Nine 120-mm fans
mounted externally on the front chassis wall behind the cosmetic front bezel push air into the
Environmental Specifications 189