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Service Availability Math in 9’s

Miscellaneous

Service Availability Math in 9’s

Usually some engineers get confused when it comes the service availability when it comes to number of 9’s.

Uptime            Downtime (Yearly)
99.00000%      3d 15h 39m
99.90000%      8h 45m 56s
99.99000%      52m 35s
99.99900%      5m 15s
99.99990%      31s
99.99999%      3s

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