According to Huawei’s storage networking guides, Fibre Channel (FC) supports three primary physical topologies to facilitate communication between servers (initiators) and storage arrays (targets).
Point-to-point (Option C): This is the simplest topology where two nodes are directly connected. It provides dedicated bandwidth but lacks scalability.
Arbitrated loop (FC-AL) (Option D): In this setup, devices are connected in a loop shared by all nodes. While more scalable than point-to-point, only one pair of nodes can communicate at a time, leading to performance bottlenecks as more devices are added.
Fabric (FC-SW) (Option A): This is the most common enterprise topology, utilizing FC switches. It allows many-to-many communication, providing high scalability, redundancy, and independent bandwidth for each connection.
" Bus " (Option B) is a topology associated with older Ethernet or SCSI standards and is not a recognized topology in Fibre Channel networking. Huawei OceanStor Dorado and Hybrid systems primarily utilize the Fabric topology for large-scale data center deployments to ensure maximum availability and performance through redundant switch fabrics.
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