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Server Architectures by René J. Chevance

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Chapter 9. The Terminology of High-Availability Systems

The Terminology of High-Availability Systems

Increasingly, activities—business and government, among others—rely on data-processing resources to fulfill their missions. The availability of these resources (that is, their ability to deliver the specified services) and the degree of confidence users can place in the availability of these services, therefore, become requirements for and essential properties of these systems.

The following few definitions help to crystallize the important concept of system reliability:

  • Reliability allows a user to have a justified confidence in the services delivered by the system

  • Reliability is the time-bound property and characteristics of an entity which give ...

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