Flashback about a decade, to when this retail chain’s data center needs a sprinkler head changed for its fire-suppression system — which turns out to be a little more complicated than expected, according to a pilot fish there.

“Back in the 1990s, we moved into a new headquarters with a state-of-the-art computer room,” says fish. “Halon was on the way out, so they installed a ‘dry’ sprinkler system — the pipes were pressurized with air, and would only fill with water when an actual fire occurred. This would prevent damaging nuisance leaks.

“And when there was leaking air and loss of air pressure in the system, we knew we needed a new sprinkler head.”

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