Search results
Results from the WOW.Com Content Network
In general, the number of nines is not often used by a network engineer when modeling and measuring availability because it is hard to apply in formula. More often, the unavailability expressed as a probability (like 0.00001), or a downtime per year is quoted. Availability specified as a number of nines is often seen in marketing documents.
Five-9's (99.999%) means less than 5 minutes when the system is not operating correctly over the span of one year. Availability is only meaningful for supportable systems. As an example, availability of 99.9% means nothing after the only known source stops manufacturing a critical replacement part.
Every 1.38 million years (twice in history of humankind) μ ± 6.5σ: 0.999 999 999 919 680: 8.032 × 10 −11 = 0.080 32 ppb = 80.32 ppt: 1 in 12 450 197 393: Every 34 million years (twice since the extinction of dinosaurs) μ ± 7σ: 0.999 999 999 997 440: 2.560 × 10 −12 = 2.560 ppt: 1 in 390 682 215 445: Every 1.07 billion years (four ...
The purity of a gas is generally expressed as a grade prefixed with the letter N (rather than postfixed), indicating the "number of nines" in the percentage or decimal fraction. For example, a N2.0 gas is 99% (two nines) pure and 1% impurities by volume; a N6.0 gas is 99.9999% (six nines) pure, with 1 part per million (1 ppm or 1 vpm, volume ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 8 February 2025. This article needs to be updated. Please help update this article to reflect recent events or newly available information. (March 2022) World map of countries shaded according to the literacy rate for all people aged 15 and over This is a list of countries by literacy rate. The global ...
US and Canada: 7 times a year. [3] Other countries: 5 times a year. [4] Regions: Worldwide [5] [6] Languages: English: Annual number of test takers: Over 1.37 million high school graduates in the class of 2024 [7] Prerequisites: No official prerequisite. Intended for high school students. Fluency in English assumed. Fee: Without writing: US$63. ...
The number , whose typical value is close to but not greater than 1, is sometimes given in the form (or as a percentage % ()), where is a small positive number, often 0.05. By definition, the bounds () and () are to be constructed in such a way that as long as is collected randomly, i.e. the model assumption about its probability distribution ...
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. [3] [4]