NonStop NS14000 Planning Guide (H06.10+)

Cooling Airflow Direction
Each enclosure includes its own forced-air cooling fans or blowers. Air flow for each enclosure
enters from the front of the modular cabinet and exhausts at the rear.
Typical Acoustic Noise Emissions
70 dB(A) (sound pressure level at operator position)
Tested Electrostatic Immunity
• Contact discharge: 8 KV
• Air discharge: 20 KV
Calculating Specifications for Enclosure Combinations
“Figure 3-1. Example Duplex Configuration” (page 33) shows components installed in 42U
modular cabinets. Cabinet weight includes the PDUs and their associated wiring and receptacles.
Power and thermal calculations assume that each enclosure in the cabinet is fully populated; for
example, a NonStop Blade Element with four processors. The power and heat load is less when
enclosures are not fully populated, such as a NonStop Blade Element with fewer processors or
less memory, a Fibre Channel disk module with fewer disk drives, or an LSU enclosure with
fewer LSUs.
AC current calculations assume that one PDU delivers all power. In normal operation, the power
is split equally between the two PDUs in the cabinet. However, calculate the power load to
assume delivery from only one PDU to allow the system to continue to operate if one of the two
AC power sources or PDUs fails.
NOTE: If your system includes the optional rackmounted HP R5500 XR UPS, the modular
cabinet will have one PDU located on the rear left side and four extension bars on the rear right
side. To provide redundancy, components are plugged into the left-side PDU and the extension
bars. Each extension bar is plugged into the UPS.
“Figure 3-1. Example Duplex Configuration” (page 33) has eight logical processors with two
VIO enclosures, and eight Fibre Channel disk modules installed in two 42U modular cabinets.
The weight, power, and thermal calculations for the components in each cabinet are shown in
“Example Load Calculations for Cabinet One” (page 33). For a total thermal load for a system
with multiple cabinets, add the heat outputs for all the cabinets in the system.
32 System Installation Specifications