The whole region is down, you just calculated the chance of at least one machine... | Hacker News

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		nasmorn on Oct 22, 2012 \| parent \| context \| favorite \| on: Amazon EC2 currently down. Affecting Heroku, Reddi... The whole region is down, you just calculated the chance of at least one machine having an error.

jey on Oct 22, 2012 [–]

No, I calculated the error rate for the region. If us-east-1 has 5 times the machines (or availability zones, or routers, or EBS backplanes, or other thing-that-can-fail) as us-west-1, we would expect to see us-east-1 have each type of error occur about 5 times as often as us-west-1.

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