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"Amazon’s EC2 cloud computing service suffered its fourth power outage in a week on Tuesday, with some customers in its US East Region losing service for about an hour. The incident was triggered when a vehicle crashed into a utility pole near one of the company’s data centers, and a transfer switch failed to properly manage the shift from utility power to the facility’s generators."
Car Crash Triggers Amazon Power Outage « Data Center Knowledge. You know, unless you actually test your failover equipment regularly, you have no idea if it works. That’s why, back when I used to run a hosting business, nothing made me happier than rebooting servers, pulling ethernet cables from firewalls, or turning off UPSes, and watching as services continued uninterrupted. The fact that Amazon’s response to this event was to fix the switch, rather than fix the procedures that let the faulty switch go unnoticed, is troubling.
