NonStop NS-Series Servers Site Preparation (H06.03+)

Facility Guidelines
HP Integrity NonStop NS-Series Site Preparation Guide—527836-005
2-4
Weight
Because of high heat densities and hot spots, an accurate assessment of air flow
around and through the server equipment and specialized cooling design is essential
for reliable server operation.
Cooling airflow through each enclosure in the Integrity NonStop NS-series server is
front-to-back. Consult with your HP cooling consultant or your heating, ventilation, and
air conditioning (HVAC) engineer. For HP cooling consultation services, refer to Data
Center Thermal Analysis on page B-2.
Because each modular cabinet houses a unique combination of enclosures, use the
Heat Dissipation Specifications and Worksheet on page 3-10 to calculate the total heat
dissipation for the hardware installed in each cabinet. For air temperature levels at the
site, refer to Operating Temperature, Humidity, and Altitude on page 3-10.
Weight
Modular cabinets for Integrity NonStop NS-series servers have a foot print and height
comparable to NonStop S-series servers with stacked enclosures. But each populated
modular cabinet in Integrity NonStop NS-series servers can be more than twice as
heavy as a NonStop S-series server stack. Because each modular cabinet houses a
unique combination of enclosures, total weight must be calculated based on what is in
the specific cabinet, as described in Dimensions and Weights on page 3-7.
Flooring
Integrity NonStop NS-series servers can be installed either on the site’s floor with the
cables entering from above the equipment or on raised flooring with power and I/O
cables entering from underneath. Because cooling airflow through each enclosure in
the modular cabinets is front-to-back, raised flooring is not required for system cooling.
The site floor structure and any raised flooring (if used) must be able to support the
total weight of the installed computer system as well as the weight of the individual
modular cabinets and their enclosures as they are moved into position. To determine
the total weight of each modular cabinet with its installed enclosures, refer to Modular
Cabinet and Enclosure Weights With Worksheet on page 3-9.
For your site’s floor system, consult with your HP site preparation specialist or an
appropriate floor system engineer. If raised flooring is to be used, the design of the
NonStop NS-series server modular cabinet is optimized for placement on 24-inch floor
panels.
Note. Failure of site cooling with the server continuing to run can cause rapid heat buildup and
excessive temperatures within the hardware. Excessive internal temperatures can result in full
or partial system shutdown. Ensure that the site’s cooling system remains fully operational
when the server is running.