Survivability in Metro WDM storage area networks

This paper proposes and evaluates network survivability of optical paths in metro wavelength division multiplexing (WDM) based storage area networks (SANs). The paper begins with a background and motivation. Subsequently, the network architectures along with their medium access control (MAC) protocols are described. In this work, one link failure (a single cable cut) in metro WDM based SANs in a ring network architecture is considered. Performance evaluation for network survivability in metro WDM SAN is carried out by means of computer simulation. Network throughput and packet delay are investigated. The network performance is evaluated for asymmetric (unbalanced) traffic scenarios under Poisson and self-similar traffic.