By my math, six 9's is 30 seconds, not 30 minutes? (1 - 0.999999) * (60 * 24 * 365) EDIT: This chart agrees: https://en.wikipedia.org/wiki/High_availability#P

By my math, six 9's is 30 seconds, not 30 minutes? (1 - 0.999999) * (60 * 24 * 365) EDIT: This chart agrees: https://en.wikipedia.org/wiki/High_availability#Percentage_calculation https://en.wikipedia.org/wiki/High_availability#Percentage_c...