What is ETSI?
Full free air cooling can not be used with arbitrary equipment. The systems in the racks must be designed to operate at higher temperatures and Relative Humidity ranges than normally prescribed for data centers. We use systems that are compliant to the ETSI EN 300 019-1-3 V2.2.2 (2004-07) class 3.1 : Environmental Engineering (EE) Environmental conditions and environmental tests for telecommunications equipment; Part 1-3: Classification of environmental conditions; Stationary use at weatherprotected locations. http://pda.etsi.org/pda/queryform.asp. Class 3.1 requires that the environment stays within 10-35 degrees for 90% of the time. During 10% of the time, 5-40 degrees are allowed, and during 1% of the time -5 to 45 degrees are tolerated.
