Issues in Predicting the Reliability of Components
Availability is one of the most frequently specified quality
attributes for computerized systems and the computation of
availability requires knowledge about the reliability of the system.
Although much research has been devoted to software system
reliability, much work remains to be done in identifying ways to
predict reliability of assemblies of components. We are designing
an experiment for use as a foundation for creating a reliability
prediction-enabled component technology (PECT), which is to be
used to produce systems that are predictably reliable by
construction; in the course of that work we have recognized the
need to evolve combinatorial reliability models for use in
computing reliability of assemblies based on the reliabilities of
constituent components. In this paper, we describe and discuss
aspects of current models that need to be adapted and how they
affect the design of our experiment.