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  2. High availability - Wikipedia

    en.wikipedia.org/wiki/High_availability

    52.60 minutes 13.15 minutes 4.38 minutes 1.01 minutes 8.64 seconds 99.995% ("four nines five") 26.30 minutes 6.57 minutes 2.19 minutes 30.24 seconds 4.32 seconds 99.999% ("five nines") 5.26 minutes 1.31 minutes 26.30 seconds 6.05 seconds 864.00 milliseconds: 99.9999% ("six nines") 31.56 seconds 7.89 seconds 2.63 seconds 604.80 milliseconds

  3. Website monitoring - Wikipedia

    en.wikipedia.org/wiki/Website_monitoring

    Monitoring can cover many things that an application needs to function, like network connectivity, Domain Name System records, database connectivity, bandwidth, and computer resources like free RAM, CPU load, disk space, events, etc. Commonly measured metrics are response time and availability (or uptime), but consistency and reliability ...

  4. Continuous availability - Wikipedia

    en.wikipedia.org/wiki/Continuous_Availability

    Continuous availability is an approach to computer system and application design that protects users against downtime, whatever the cause and ensures that users remain connected to their documents, data files and business applications.

  5. Our DNA is 99.9 percent the same as the person sitting next ...

    www.aol.com/article/2016/05/06/our-dna-is-99-9...

    Our bodies have 3 billion genetic building blocks, or base pairs, that make us who we are. And of those 3 billion base pairs, only a tiny amount are unique to us, making us about 99.9% genetically ...

  6. Nines (notation) - Wikipedia

    en.wikipedia.org/wiki/Nines_(notation)

    In this context, a "one nine" (90%) uptime indicates a system that is available 90% of the time or, as is more commonly described, unavailable 10% of the time – about 72 hours per month. [8] A "five nines" (99.999%) uptime describes a system that is unavailable for at most 26 seconds per month. [8]

  7. Uptime - Wikipedia

    en.wikipedia.org/wiki/Uptime

    Uptime is a measure of system reliability, expressed as the period of time a machine, typically a computer, has been continuously working and available. Uptime is the opposite of downtime . Htop adds an exclamation mark when uptime is longer than 100 days.

  8. 68–95–99.7 rule - Wikipedia

    en.wikipedia.org/wiki/68–95–99.7_rule

    For an approximately normal data set, the values within one standard deviation of the mean account for about 68% of the set; while within two standard deviations account for about 95%; and within three standard deviations account for about 99.7%.

  9. 97.5th percentile point - Wikipedia

    en.wikipedia.org/wiki/97.5th_percentile_point

    95% of the area under the normal distribution lies within 1.96 standard deviations away from the mean.. In probability and statistics, the 97.5th percentile point of the standard normal distribution is a number commonly used for statistical calculations.