IBM DCS3860, Инструкция по установке, использованию и обслуживанию

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Table 30. Limits for particulates and gases
Contaminant Limits
Particulate
v
The room air must be continuously filtered with 40% atmospheric
dust spot efficiency (MERV 9) according to ASHRAE Standard 52.2
1
.
v
Air that enters a data center must be filtered to 99.97% efficiency or
greater, using high-efficiency particulate air (HEPA) filters that meet
MIL-STD-282.
v The deliquescent relative humidity of the particulate contamination
must be more than 60%
2
.
v The room must be free of conductive contamination such as zinc
whiskers.
Gaseous
v
Copper: Class G1 as per ANSI/ISA 71.04-1985
3
v
Silver: Corrosion rate of less than 300 Å in 30 days
1
ASHRAE 52.2-2008 - Method of Testing General Ventilation Air-Cleaning Devices for Removal
Efficiency by Particle Size . Atlanta: American Society of Heating, Refrigerating and
Air-Conditioning Engineers, Inc.
2
The deliquescent relative humidity of particulate contamination is the relative humidity at
which the dust absorbs enough water to become wet and promote ionic conduction.
3
ANSI/ISA-71.04-1985. Environmental conditions for process measurement and control systems:
Airborne contaminants . Instrument Society of America, Research Triangle Park, North
Carolina, U.S.A.
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Noise
Government regulations (such as those prescribed by OSHA or European
Community Directives) may govern noise level exposure in the workplace and
may apply to you and your server installation. The actual sound pressure levels in
your installation depend upon a variety of factors, including the number of racks
in the installation; the size, materials, and configuration of the room; the noise
levels from other equipment; the room ambient temperature, and employees’
location in relation to the equipment. Further, compliance with such government
regulations also depends upon a variety of additional factors, including the
duration of employees’ exposure and whether employees wear hearing protection.
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IBM System Storage DCS3860 Storage System: Installation, User's, and Maintenance Guide