NonStop NS-Series Planning Guide (H06.04+)

Installation Facility Guidelines
HP Integrity NonStop NS-Series Planning Guide—529567-005
2-5
Flooring
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
Integrity NonStop NS-series server modular cabinet is optimized for placement on 24-
inch floor panels.
Dust and Pollution Control
NonStop servers do not have air filters. Any computer equipment can be adversely
affected by dust and microscopic particles in the site environment. Airborne dust can
blanket electronic components on printed circuit boards inhibiting cooling airflow and
causing premature failure from excess heat, humidity, or both. Metallically conductive
particles can short circuit electronic components. Tape drives and some other
mechanical devices can experience failures resulting from airborne abrasive particles.
For recommendations to keep the site as dust and pollution free as possible, consult
with your heating, ventilation, and air conditioning (HVAC) engineer or your HP site
preparation specialist.
Zinc Particulates
Over time, fine whiskers of pure metal can form on electroplated zinc, cadmium, or tin
surfaces such as aged raised flooring panels and supports. If these whiskers are
disturbed, they can break off and become airborne, possibly causing computer failures
or operational interruptions. This metallic particulate contamination is a relatively rare
but possible threat. Kits are available to test for metallic particulate contamination, or
you can request that your site preparation specialist or HVAC engineer test the site for
contamination before installing any electronic equipment.
Receiving and Unpacking Space
Identify areas that are large enough to receive and to unpack the system from its
shipping cartons and pallets. Be sure to allow adequate space to remove the system
equipment from the shipping pallets using supplied ramps. Also be sure adequate