Five nines
From Wikipedia, the free encyclopedia
Five nines, commonly taken to mean "99.999%", may refer to:
- High availability of services, when the downtime is less than 5.26 minutes per year
- Purity (disambiguation) of a product
- German 5.9 inch artillery shells (World War 1)
[edit] See also
- Nines (engineering)
- High availability#Percentage calculation which has a table that shows the conversion from "nines" to the amount of time a system would be unavailable in a year
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