HP Integrity BL870c Server-Blade - Manual (Page 13)

the lighting fixtures and electrical outlets affects servicing operations, consider an equipment layout
that takes advantage of existing lighting and electrical outlets.
Also consider the location and orientation of current or future air conditioning ducts and airflow
direction and eliminate any obstructions to equipment intake or exhaust air flow.
Space planning should also include the possible addition of equipment or other changes in space
requirements. Depending on the current or future equipment installed at your site, layout plans can
also include provisions for:
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Channels or fixtures used for routing data cables and power cables
•
Access to air conditioning ducts, filters, lighting, and electrical power hardware
•
Communications cables, patch panels, and switch equipment
•
Power conditioning equipment
•
Storage area or cabinets for supplies, media, and spare parts
Dust and Pollution Control
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 free of dust and pollution 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.
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.
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Ensure that all panels and cover plates are in place and secure before system operation.
Dust and Pollution Control 13