Wide area traffic: the failure of Poisson modeling
IEEE/ACM Transactions on Networking (TON)
End-to-end delay analysis of videoconferencing over packet-switched networks
IEEE/ACM Transactions on Networking (TON)
All-optical WDM multi-rings with differentiated QoS
IEEE Communications Magazine
Performance study of iSCSI-based storage subsystems
IEEE Communications Magazine
Storage area network extension solutions and their performance assessment
IEEE Communications Magazine
Reliability and availability assessment of storage area network extension solutions
IEEE Communications Magazine
Packet-level traffic measurements from the Sprint IP backbone
IEEE Network: The Magazine of Global Internetworking
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Storage area networks (SANs) are a promising technology to efficiently manage the ever-increasing amount of business data. Extending SANs over large distances becomes essential to facilitate data protection and sharing storage resources over large geographic distances. A WDM metropolitan ring network is examined as a suitable extension for SANs where it is shown that sectioning the ring can help deal with traffic asymmetry and hot node (SAN node on ring) scenarios. Several network architectures are studied: One of the architectures accommodates a single SAN and its mirror connected through a sectioning link. Another architecture accommodates two pairs of SANs and their mirrors with sectioning links connecting each pair. Issues investigated include impact of the number of co-existing IP (non SAN) nodes; traffic models: Poisson and self-similar; slotted regime: fixed-size (FS), variable-size (VS) and supersize (SS) slot schemes; MAC protocol design; handling traffic asymmetry and performance measures.