User Manual

Constellation.2 SAS Product Manual, Rev. K 42
6.5.5 Acoustics
Sound power during idle mode shall be 2.2 bels typical when measured to ISO 7779 specification.
There will not be any discrete tones more than 10 dB above the masking noise on typical drives when measured
according to Seagate specification 30553-001. There will not be any tones more than 24 dB above the masking noise
on any drive.
6.5.6 Air cleanliness
The drive is designed to operate in a typical office environment with minimal environmental control.
6.5.7 Corrosive environment
Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years exposure to light
industrial environments containing sulfurous gases, chlorine and nitric oxide, classes G and H per ASTM B845. How-
ever, this accelerated testing cannot duplicate every potential application environment.
Users should use caution exposing any electronic components to uncontrolled chemical pollutants and corrosive
chemicals as electronic drive component reliability can be affected by the installation environment. The silver, copper,
nickel and gold films used in Seagate products are especially sensitive to the presence of sulfide, chloride, and nitrate
contaminants. Sulfur is found to be the most damaging. In addition, electronic components should never be exposed
to condensing water on the surface of the printed circuit board assembly (PCBA) or exposed to an ambient relative
humidity greater than 95%. Materials used in cabinet fabrication, such as vulcanized rubber, that can outgas corrosive
compounds should be minimized or eliminated. The useful life of any electronic equipment may be extended by
replacing materials near circuitry with sulfide-free alternatives.
6.5.8 Electromagnetic susceptibility
See Section 2.1.1.1.