Data Center Temperature: ASHRAE's Perspective

A interesting article from Data Centre Posts "Data Center Temperature: ASHRAE's Perspective"


On the Moisture Lower Limit
.....A lower limit of 5.5 C (41.9 F) was chosen which corresponded to the lowest absolute moisture level of the 2004 recommended limits.....

On the Moisture Upper Limit 
.....It was found that extended periods above 60% can result in failures. As a result, a relative humidity upper limit of 60% was chosen.....