An algorithm to partition the operational availability parts of an optimal provisioning strategy

The implementation of an appropriate and cost-effective sparing provisioning strategy depends on the choice of an adequate mathematical model. The model chosen should provide optimal cost-effective provisioning as well as other applicable factors and should emphasize the following aspects for a total system evaluation: (i) identification of system parameters, and (ii) interactions of system parameters for optimal evaluation. The different parts that make up the system operational availability (A/sub O/) must be identified. If an algorithm could be developed to represent the different parts of A/sub O/, the individual contributions of these could be identified and used to determine an optimal provisioning strategy or other factors that influence the overall operational availability. From the basic RMA (reliability, maintainability, availability) concepts, analytical derivations, and empirical example, an algorithm can be used to express the operational availability as a function of all its parts. The mathematical model developed to partition ail of the individual availabilities of the system A/sub O/ is a simple and direct way to use the calculated values of the individual availabilities. By partitioning system operational availability into all its parts, it can be easily evaluated, trade studies can be made, and it can be optimized for a cost-effective provisioning strategy. This paper presents an algorithm that makes it possible to partition easily, directly, and concisely by using the already calculated individual availabilities.