Which of the following descriptions are correct about analyzing and adjusting the CIFS transfer size of the Oceanstor 9000 system? (Multiple choice)

• A.CIFS transfer block size refers to the size of the data block carried in a single service request between the IP client and Oceanstor 9000 in CIFS file sharing
• B.Analyze the file size ratio that needs to be stored in Oceanstor 9000 to obtain the storage file model, and then select an appropriate size value
• C.To adjust the transmission block size, you need to adjust the client and Oceanstor9000 at the same time. If they are inconsistent, the minimum of the values set by both parties shall prevail.
• D.Since the parameter value in Oceanstor 9000 has been set to the minimum value by default, it is only necessary to adjust the parameter value of the client to the target value

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Huawei OceanStor 9000 uses the erasure code technology to protect data. A site has seven nodes, and the customer requires the disk utilization rate to reach 70%.
Which redundancy levels can be used to meet the requirement? (Multiple Choice)

• A.6+1
• B.12+2:1
• C.6+4
• D.4+2

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In the Huawei Active-active Disaster Recovery Solution, which of the following are required components? (Multiple choice)

• A.UltraPath
• B.HyperMiror
• C.HyperMetro
• D.Quorum server

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Which of the following about the WushanFS global cache technology employed by Huawei OceanStor 9000 is false?

• A.Global cache helps improve the sharing of memory resources among nodes.
• B.Data cached on a node cannot be hit by the read/write service of another node.
• C.WushanFS global cache enables the memory spaces on all storage servers to logically form a unified memory resource pool.
• D.The WushanFS uses a distributed lock mechanism to implement global management of cached data. The same service data is cached only on one node. Another node that needs to access the service data can apply for a lock to obtain the cached data.

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After Huawei Distributed Storage turns on the object deduplication function, the system will automatically find duplicate objects globally, and only keep one copy of the same object while deleting redundant duplicate data. The original duplicate data will be replaced with a reference to the reserved single copy.

• A.True
• B.False

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