Which s the protocol used for networking between OceanStor Dorado smart disk enclosures and controller enclosures?

Question

Options

• ASAS
• BPCle
• C100GE RoCE
• DFC

• A
  6% (3)
• B
  12% (6)
• C
  80% (40)
• D
  2% (1)

Explanation

100GE RoCE (Remote Direct Memory Access over Converged Ethernet) is the internal back-end protocol Huawei selected for OceanStor Dorado's smart disk enclosures because these enclosures contain their own processing intelligence and require an extremely high-bandwidth, low-latency interconnect to match the performance of NVMe-based all-flash storage. SAS is incorrect because, while it is the traditional back-end protocol for connecting disk enclosures to controllers in older storage systems, Dorado's architecture moved away from SAS to meet next-generation performance demands. PCIe is incorrect because it is a board-level bus interface used inside a single controller for directly attached components, not a networking protocol between separate enclosures. FC is incorrect because Fibre Channel serves as a front-end host connectivity protocol between servers and the storage array, not as the internal link between enclosures.

Memory tip: Think of Dorado as a "smart" system end to end -- its disk enclosures are intelligent and network-like, so they use a network protocol (RoCE over 100GE Ethernet) rather than a storage bus (SAS) or a host protocol (FC).

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