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Particulate and gaseous contamination specifications
The following table defines the limitations that help avoid any equipment damage or failure from particulate and gaseous contamination. If
the levels of particulate or gaseous pollution exceed the specified limitations and result in equipment damage or failure, you may need to
rectify the environmental conditions. Remediation of environmental conditions is the responsibility of the customer.
Table 42. Particulate contamination specifications
Particulate contamination
Air filtration
Conductive dust
Corrosive dust
Table 43. Gaseous contamination specifications
Gaseous contamination
Copper coupon corrosion rate
Silver coupon corrosion rate
NOTE:
Maximum corrosive contaminant levels measured at ≤50% relative humidity.
Specifications
Data center air filtration as defined by ISO Class 8 per ISO 14644-1 with a
95% upper confidence limit.
NOTE:
This condition applies to data center environments only.
Air filtration requirements do not apply to IT equipment designed
to be used outside a data center, in environments such as an
office or factory floor.
NOTE:
Air entering the data center must have the MERV11 or
MERV13 filtration.
Air must be free of conductive dust, zinc whiskers, or other conductive
particles.
NOTE:
This condition applies to data center and non-data center
environments.
•
Air must be free of corrosive dust.
•
Residual dust present in the air must have a deliquescent point less than
60% relative humidity.
NOTE:
This condition applies to data center and non-data center
environments.
Specifications
<300 Å/month per Class G1 as defined by ANSI/ISA71.04-1985.
<200 Å/month as defined by AHSRAE TC9.9.
Technical specifications
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