Option D is incorrect . The HCIA-Cloud Service V3.5 comparison positions SFS Capacity-Oriented as the large-capacity, high-bandwidth, cost-sensitive file-storage option. Huawei describes its principal advantages as large capacity, high bandwidth, and low cost , making it particularly appropriate for media processing, large-scale file sharing, HPC, and backup workloads.
The performance characteristics also support A and B. Huawei's documented SFS Capacity-Oriented implementation provides substantially greater maximum aggregate bandwidth than the previous-generation SFS Turbo Standard class. However, its access latency is approximately 3–20 ms , whereas SFS Turbo Standard provides lower latency, historically around 2–5 ms . SFS Turbo is therefore more appropriate where low-latency access and workloads involving large numbers of small files are important.
Capacity-Oriented storage can scale to petabyte-scale capacities and is specifically optimized economically for large-volume storage. Consequently, for equivalent expenditure, it can provide significantly greater capacity than performance-oriented SFS Turbo configurations.
Option D reverses this economic relationship. SFS Capacity-Oriented is not positioned as the more expensive alternative for equal capacity; low cost at large scale is one of its defining characteristics .
Reference topics: SFS File System Types; SFS Capacity-Oriented; SFS Turbo Standard; File Storage Performance and Cost.
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