In this paper we develop a variant of a previously proposed method the regenerative randomization method for the transient analysis of dependability performability models. The variant is obtained by developing a closed-form expression for the solution of the truncated transformed model obtained in regenerative randomization and using a Laplace transform inversion algorithm. Using models of moderate size of a 5-level RAID architecture we compare the new variant with the original randomization method, with randomization with steady-state detection for irreducible models, and with the standard randomization method for transient models models with absorbing states. The new variant seems to be competitive for models of moderate size.
Juan A. Carrasco