reliability availability

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• Reliability, Availability and Serviceability — are computer hardware engineering terms. It originated from IBM to advertise the robustness of their mainframe computers. The concept is often known by the acronym RAS . Mainframe computers have a multitude of features that help them stay up… …   Wikipedia

• Reliability theory — developed apart from the mainstream of probability and statistics. It was originally a tool to help nineteenth century maritime insurance and life insurance companies compute profitable rates to charge their customers. Even today, the terms… …   Wikipedia

• Availability — For the thermodynamic function availability , in the sense of available useful work, see exergy. For availability as a form of cognitive bias, see availability heuristic. In telecommunications and reliability theory, the term availability has the …   Wikipedia

• Availability —   Describes the reliability of power plants. It refers to the number of hours that a power plant is available to produce power divided by the total hours in a set time period, usually a year …   Energy terms

• Fides (reliability) — Fides (latin: trust ) is a guide allowing estimated reliability calculation for electronic components and systems. The reliability prediction is generally expressed in FIT (number of failures for 109 hours) or MTBF (Mean Time Between Failure or… …   Wikipedia

• High availability — is a system design approach and associated service implementation that ensures a prearranged level of operational performance will be met during a contractual measurement period. Users want their systems, for example wrist watches, hospitals,… …   Wikipedia

• High-availability cluster — High availability clusters (also known as HA clusters or failover clusters) are groups of computers that support server applications that can be reliably utilized with a minimum of down time. They operate by harnessing redundant computers in… …   Wikipedia

• 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. Continuous availability describes… …   Wikipedia

• Human reliability — is related to the field of human factors engineering, and refers to the reliability of humans in fields such as manufacturing, transportation, the military, or medicine. Human performance can be affected by many factors such as age, circadian… …   Wikipedia

• Circuit reliability — (also time availability) (CiR) is the percentage of time an electronic circuit was available for use in a specified period of scheduled availability. Circuit reliability is given by where T o is the circuit total outage time, Ts is the circuit… …   Wikipedia

• Ongoing reliability test — The ongoing reliability test (ORT) is a hardware test process usually used in manufacturing to ensure that quality of the products is still of the same specifications as the day it first went to production or general availability. The products… …   Wikipedia