HP StorageWorks XP128 Installation Manual page 55

Preparing for installation
Follow these precautions to minimize possible ESD-induced failures in
your computer room:
• Install conductive flooring (conductive adhesive must be used when
laying tiles).
• Use conductive wax if waxed floors are installed.
• Ensure that both equipment and flooring are properly grounded and
are at the same ground potential.
• Use conductive tables and chairs.
• Store spare electric parts in antistatic containers.
• Maintain recommended humidity level and airflow rates.
Low humidity levels are often the result of the facility heating system and
occur during the cold season. Most heating systems provide air with a low
humidity level, unless the system has a built-in humidifier.
Dust and pollution control
For trouble free operation, disk drives require a dust-free environment, The
HP Disk Array XP128 disk drives are protected from dust particles by
mechanical air filters designed to trap large dust particles. Smaller particles
can pass through some filters, and, over a period of time, can cause
problems in mechanical parts. Small dust particles can be prevented from
entering the computer room by maintaining its air conditioning system at a
high static air pressure level.
Metallic particulate contamination
Metallic particulates can be especially harmful around electronic
equipment. This type of contamination may enter the data center
environment from a variety of source, including but not limited to raised
floor tiles, worn air conditioning parts, heating ducts, rotor brushes in
vacuum cleaners, or printer component wear. Because metallic particulates
conduct electricity, they have an increased potential for creating short
circuits in electronic equipment.This problem is aggravated by the
increasingly dense circuitry of electronic equipment.
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