SmartDedupe and SmartCompression are data reduction technologies in Huawei all-flash storage systems, such as OceanStor Dorado. The *HCIP-Storage V5.5 Training Material (Module 2: Flash Storage Technologies)* provides details:
- Option A: True. The material states: “Post-process compression involves writing data to storage media first, then reading it back for compression during idle periods.”
- Option B: True. The material confirms: “Inline deduplication divides data into blocks and calculates fingerprints to identify duplicates before writing.”
- Option C: False. The material clarifies: “Similarity-based deduplication, whether inline or background, requires dividing data into blocks to calculate fingerprints for similarity detection. Direct calculation without block division is not supported.” This makes the statement incorrect.
- Option D: True. The material notes: “Backup storage supports deduplication and compression for file systems to optimize space usage.”
Thus, option C is false.
[Reference: , HCIP-Storage V5.5 Training Material, Module 2: Flash Storage Technologies, Section 2.9: SmartDedupe and SmartCompression Technologies*, Huawei Technologies Co., Ltd., , ---, ]
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