I hear this misunderstanding a lot as well, generally in relation to AWS S3 SLAs...

bogomipz on Oct 22, 2016 | parent | context | favorite | on: Internet Attack Spreads, Disrupting Major Websites

I hear this misunderstanding a lot as well, generally in relation to AWS S3 SLAs. 11 9's of "uptime" would mean service could be be down for 3 milliseconds a year. 4 9s is very respectable.