About Huawei Oceanstor V3 storage dynamic hierarchical storage technology, Which of the following description is not correct?

About Huawei Oceanstor V3 storage dynamic hierarchical storage technology, Which of the following description is not correct?
A . smart Tier calculate and analyze data activity , to determine the active level of data
B . smart Tier according to the different activity level of data, automatically and dynamically move data to a different performance storage medium
C . smart tier data movement based on the configuration of data migration strategy
D . smart tier features of data statistics, analysis and data migration will affect the business continuity and data availability

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Answer: D