NonStop NS2400 Series Planning Guide

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.
Communications Interference
HP system compliance tests are conducted with HP supported peripheral devices and shielded
cables, such as those received with the system. The system meets interference requirements of all
countries in which it is sold. These requirements provide reasonable protection against interference
with radio and television communications.
Installing and using the system in strict accordance with HP instructions minimizes the chances that
the system will cause radio or television interference. However, HP does not guarantee that the
system will not interfere with radio and television reception.
Take these precautions:
• Use only shielded cables.
• Install and route the cables per the instructions provided.
• Ensure that all cable connector screws are firmly tightened.
• Use only HP supported peripheral devices.
• Ensure that all panels and cover plates are in place and secure before system operation.
126 Site Preparation Guidelines for NonStop NS2400T and NS2400ST Systems