Performance optimization in Huawei Hybrid Flash arrays is primarily handled by the SmartCache and SmartTier features, which leverage the speed of SSDs to compensate for the slower performance of HDDs:
SmartCache (Option C): This feature uses SSDs as a high-speed Level-2 read cache . By caching frequently accessed " hot " data on SSDs, the system can respond to read requests with much lower latency than if it had to fetch data from mechanical SAS or NL-SAS drives.
SmartTier (Option D): This is an intelligent storage tiering feature. It monitors data access frequency and automatically migrates active data blocks to the high-performance SSD tier, while moving inactive " cold " data to lower-cost HDD tiers. This ensures that performance-sensitive workloads always run on the fastest available media.
SmartDedupe (Option A) is a capacity efficiency feature for reducing redundant data. SmartAcceleration (Option B) is not a standard standalone feature name in the OceanStor Hybrid suite, although the system as a whole uses various acceleration algorithms.
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