User Service Guide, Fifth Edition - HP Integrity rx8640 SEU

Table 2-5 System Power Requirements
CommentsVAWattsPower Required (50 - 60 Hz)
See Note 1940921Maximum Theoretical Power
30A @ 180 VAC, See Note 21300– – –Marked Electrical Power
See Note 3613601Typical Maximum Power
Note 1: Maximum Theoretical Power: or “Maximum Configuration” (Input power at the ac input
expressed in Watts and Volt-Amps to take into account Power factor correction.) The calculated
sum of the maximum worst case power consumption for every subsystem in the server. This
number will never be exceeded by a functioning server for any combination of hardware and
software under any conditions.
Note 2: Marked Electrical Power: (Input power 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
under all conditions.
Note 3: Typical Maximum Power: or User Expected Maximum Power, (Input power at the ac
input expressed in Watts and Volt-Amps.)The measured maximum worst case power
consumption. This number represents the larges power consumption that HP engineers were
able to produce for the server with any combination of hardware under laboratory conditions
using aggressive software applications designed specifically to work the system at maximum
load. This number can safely be used to compute thermal loads and power consumption for the
system under all conditions.
Environmental Specifications
This section provides the environmental, power dissipation, noise emission, and air flow
specifications for the SEU.
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–32°C at sea level. The maximum allowable temperature is derated 1° C per 1000 feet of
elevation above 3,000 feet above sea level up to 25° C at 10,000 feet. For optimum reliability and
performance, the recommended operating range is from 20° C to 25° C. This meets or exceeds
the requirements for Class 2 in the corporate and ASHRAE standard. See Table 2-6 (page 29) for
an example of the ASHRAE thermal report.
Table 2-6 Example ASHRAE Thermal Report
Condition
Voltage 208
Volts
Over System
Dimensions(W x D x H)
WeightAirflow,
maximum at
32° C
Airflow,
nominal
Typical Heat
Release
mmIncheskglb(m3/hr)cfmWattsDescription
Environmental Specifications 29