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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 ] There is now more dependence on these systems as a result of modernization.
Availability is usually expressed as a percentage of uptime in a given year: Availability Downtime per year 99.9% 8.76 hours 99.99% 1 hour 99.999% 5 minutes
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.
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.
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.
"99.9% Sure (I've Never Been Here Before)" is a song by American country music recording musician Brian McComas. It was written by Billy Austin and Greg Barnhill and produced by Leigh Reynolds, and was included on his self-titled debut studio album (2003).
[98] [99] The Google Drive app on Android allows users to take a photo of a document, sign, or other text and use optical character recognition to convert to text that can be edited. [100] In October 2014, the Android app was updated with a Material Design user interface, improved search, the ability to add a custom message while sharing a file ...
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.