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High availability (HA) is a characteristic of a system that aims to ensure an agreed level of operational performance, usually uptime, for a higher than normal period. [1] ...
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.
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.
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%.
This was much cheaper than competitors Dropbox and OneDrive offered at the time. [ 59 ] In 2018, the paid plans were re-branded as " Google One " to emphasize their application beyond Google Drive, along with the addition of a $2.99/month plan for 200 GB, and increasing the $9.99 plan to 2 TB at no additional charge.
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.
The slogan "We are the 99%" became a unifying slogan of the Occupy movement in August 2011 [2] after a Tumblr blog, "wearethe99percent.tumblr.com," was launched in late August 2011 by a 28-year-old New York activist going by the name of "Chris" together with Priscilla Grim.