Date Added: Feb 2010
This paper introduces a novel data mirroring technique for Storage Area Networks (SANs) in a metropolitan Wavelength Division Multiplexing (WDM) ring scenario. Sectioning links are introduced to the ring to help deal with the hot node (SAN node on ring) scenarios created by the SANs and their mirrors. Two network architectures are studied: The first architecture accommodates conventional access nodes and a single SAN and its mirror, the latter connected through a sectioning link. The other architecture accommodates conventional access nodes and two pairs of SANs and their mirrors with a sectioning link connecting each pair.