When OceanStor Dorado HyperMetro active-active adopts ALL-IP network deployment, what protocols are used for host access and data?

Question

Options

• AFC+FC
• BisCSI + DTOE
• CNoF+RDMA
• DiSCSI + TCP

• A
  8% (2)
• B
  4% (1)
• C
  72% (18)
• D
  16% (4)

Explanation

In Huawei's OceanStor Dorado HyperMetro ALL-IP deployment, NoF (NVMe over Fabrics) handles host access while RDMA (Remote Direct Memory Access) handles inter-site data synchronization - both are IP/Ethernet-native protocols, making option C the correct fit for an ALL-IP architecture. Option A (FC+FC) is wrong because Fibre Channel is a SAN protocol, not IP-based, and violates the ALL-IP constraint entirely. Option B is wrong because DTOE is not a recognized standard protocol in Huawei HyperMetro contexts - it's a fabricated distractor. Option D (iSCSI+TCP) is wrong because while iSCSI is IP-based, it uses TCP and lacks the low-latency, high-throughput characteristics that RDMA provides for synchronous mirroring between active-active sites; Dorado's NVMe-based architecture specifically benefits from RDMA's kernel-bypass efficiency.

Memory tip: Think "New Flash needs Rapid Data Movement" - NVMe all-flash arrays (Dorado) use NoF for hosts and RDMA for speed across sites. If you see ALL-IP + active-active + all-flash, always lean toward NVMe-family protocols (NoF+RDMA) over legacy iSCSI/FC options.

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