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

• A.Data cached on a node cannot be hit by the read/write service of another node.
• B.Global cache helps improve the sharing of memory resources among nodes.
• 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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Which of the following descriptions about InfiniBand technology is wrong?

• A.InfiniBand technology has the advantages of high bandwidth, low latency, and good system scalability
• B.InfiniBand technology will be widely promoted in Internet network connection
• C.The switch is the basic component in the InfiniBand structure
• D.InfiniBand technology is often applied to the connection between the servers

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In a remote replication, the size of the secondary LUN on the disaster recovery storage system is larger than or equal to that of the primary LUN on the production storage system.

• A.TRUE
• B.FALSE

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Which of the following statements about LAN-free and Server-free backup networking is true?

• A.During data backup, Server-free generates a copy that will be mounted to the backup server.
• B.The LAN-free data backup path is as follows: production storage > backup server > backup media.
• C.Server-free backup networking can directly back up data to backup storage.
• D.LAN-free backup networking does not affect production hosts.

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SmartMigration can relocate all services from the source LUN to the target LUN only when services on the host are stopped.

• A.FALSE
• B.TRUE

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