“‘Jay, there’s a cloud in the data centre,’
‘What do you mean, outside?’
… It was raining in the data center.”
The ‘extreme changes’ described in the report above were caused by an accidental feedback loop of high temperature and low humidity air from the hot rows entering a water-based evaporative cooling system.
“For a few minutes, you could stand in Facebook’s data center and hear the pop and fizzle of Facebook’s ultra-lean servers