Which is the scale-out networking protocol adopted by the OceanStor Dorado?

Question

Options

• ARoCE
• BPCIe
• CFC
• DIB

• A
  73% (38)
• B
  8% (4)
• C
  15% (8)
• D
  4% (2)

Explanation

RoCE (RDMA over Converged Ethernet) is correct because OceanStor Dorado uses it as its scale-out interconnect protocol, enabling low-latency, high-bandwidth RDMA communication over standard Ethernet between storage nodes as the cluster expands. PCIe is an internal bus standard that connects components inside a server (such as NVMe drives to a controller) and has no role in inter-node networking. FC (Fibre Channel) is a host-to-storage access protocol used in SANs for connecting servers to storage, not for communication between storage nodes in a scale-out cluster. IB (InfiniBand) is a high-performance interconnect common in HPC environments but is not the protocol Huawei selected for OceanStor Dorado's scale-out architecture.

Memory tip: Link "Dorado" with "RoCE" by thinking of the storage system scaling out across an ocean of Ethernet - RoCE rides Ethernet waves to connect nodes, while the others are either internal buses (PCIe), host-access protocols (FC), or belong to a different vendor ecosystem (IB).

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