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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