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2. Five nines - Wikipedia

   en.wikipedia.org/wiki/Five_nines

   High availability of services, when a service is available for 99.999% of the time, or around 5 minutes of downtime per year Nine (purity) , a 99.999% pure substance German 15 cm (5.9 in) artillery shells used in World War I

3. High availability - Wikipedia

   en.wikipedia.org/wiki/High_availability

   More simply, going from 99.9% availability to 99.95% availability is a factor of 2 (0.1% to 0.05% unavailability), but going from 99.95% to 99.99% availability is a factor of 5 (0.05% to 0.01% unavailability), over twice as much. [note 3] A formulation of the class of 9s based on a system's unavailability would be

4. Availability (system) - Wikipedia

   en.wikipedia.org/wiki/Availability_(system)

   Availability includes non-operational periods associated with reliability, maintenance, and logistics. This is measured in terms of nines. 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.

5. Form W-9 - Wikipedia

   en.wikipedia.org/wiki/Form_W-9

   Form W-9 is most commonly used in a business–contractor arrangement. [4] Businesses can use Form W-9 to request information from contractors they hire. When a business pays a contractor over $600 during a tax year, the business is required to file Form 1099-MISC, a variant of Form 1099. To fill out Form 1099-MISC, the business may need to ...

6. High availability software - Wikipedia

   en.wikipedia.org/wiki/High_availability_software

   Availability of parallel and redundant components = 1 - (1 - X)^ N 10 hosts, each having 50% availability. But if they are used in parallel and fail independently, they can provide high availability. So for example if each of your hosts has only 50% availability, by using 10 of hosts in parallel, you can achieve 99.9023% availability.

7. Availability - Wikipedia

   en.wikipedia.org/wiki/Availability

   Availability, achieved (Aa) [6] The probability that an item will operate satisfactorily at a given point in time when used under stated conditions in an ideal support environment (i.e., that personnel, tools, spares, etc. are instantaneously available). It excludes logistics time and waiting or administrative downtime.

8. Illinois Register - Wikipedia

   en.wikipedia.org/wiki/Illinois_Register

   References to the Illinois Register contain the volume number (each volume is one calendar year) and the page number, which is continuously numbered over the course of a volume. For example, 42 Ill. Reg. 10808 refers to page 10808 of the 42nd volume (calendar year 2018).

9. Central Illinois Public Service Company - Wikipedia

   en.wikipedia.org/wiki/Central_Illinois_Public...

   The Central Illinois Public Service Company was an electric streetcar holding company and power utility first organized in 1902. Under its later quarter billion dollar holding company, CIPSCO Inc. (formerly NYSE: CIP), it merged in 1997 with the larger neighboring Union Electric Company of Missouri (formerly NYSE: UEP) to form Ameren Corporation (NYSE: AEE) based in St. Louis, Missouri. [1]