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ING Bank's main data center was shut down by a loud noise

Engadget Engadget 12/09/2016 Sean Buckley
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Members of ING Bank found themselves unable to use their debit cards this weekend due to a completely unexpected technical failure: it was just too dang loud. More specifically, a loud noise caused by a fire extinguisher test knocked out a few dozen hard-drives at the bank's main data center in Bucharest Romania. It's an uncommon, but not unknown phenomenon -- sound causes vibration, and hard-drives hate being jostled.

The bank was testing an electronics-safe fire suppression system in the main data center, but a pressure discrepancy caused the system to emit a loud noise while expelling inert gas. According to the bank, the sound was measured a over 130dB -- apparently loud enough to knock the HDD's physical components out of alignment.

That makes sense, but why hasn't something like this happened before? In a paper about hard-drive fragility and fire suppression systems, IBM researchers blame the march of progress: "Early disc storage had much greater spacing between data tracks because it held less data," The paper reads. "Which is a likely reason why this issue was not apparent until recently." Modern hard drives are less tolerant, and will fail if its read/write arm nudges 1/1,000,000 of an inch off of its data track. Good to know for folks building data centers with potentially loud fire suppression systems -- but maybe this is just yet another sign that solid state storage is the future.

Motherboard, Data Center Journal

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