RAID systems are fundamental components of modern storage infrastructures. It is therefore important to model their performance effectively. This paper describes a simulation model which predicts the cumulative distribution function of I/O request response time in a RAID~0 system consisting of homogeneous zoned disk drives. The model is constructed in a bottom-up manner, starting by abstracting a single disk drive as an M/G/1 queue. This is then extended to model a RAID~0 system using a split-merge queueing network. Simulation results of I/O request response time for RAID~0 systems with various numbers of disks are computed and compared against device measurements.
Information from pubs.doc.ic.ac.uk/esm2008-ipods.