Which of the following statements about the SmartQuota feature of Huawei OceanStor all-flash storage are correct? (Multiple choice)

• A.Update resource usage and quota check during I/O
• B.Dtree directory additionally records resource usage and quota limit metadata information
• C.Support resource management and control on the Dtree directory
• D.When creating a quota for an object, at least one of the four capacity soft quotas, capacity hard quotas, file soft quotas, and file hard quotas needs to be configured

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HyperCDP can generate more intensive recovery points for the data on the storage device. HyperCDP copy is a full copy backup of the source data at a certain point in time.

• A.False
• B.True

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The fully balanced (Active-Active) multi-choice architecture of Huawei's all-flash storage guarantees the trading business of a securities company during high concurrency. Regarding this architecture, which of the following statements are correct? (Multiple choice)

• A.Data balance is scattered to all SSDs, realizing disk load balance
• B.IO is evenly distributed to all controllers, realizing front-end load balancing
• C.Distribute IO evenly to all ports on the front end to achieve access load balancing
• D.All controllers participate in business processing, LUNs have no ownership, and controller load balancing is realized

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In the following description of the asynchronous remote replication of the OceanStor V3 storage array, which one is wrong?

• A.When adding a secondary LUN for asynchronous remote replication, the system automatically creates and activates a snapshot of the primary and secondary LUN.
• B.In the asynchronous remote replication process, after the write I/O of the primary LUN is successful, the primary array returns the write I/O success to the host.
• C.After creating an asynchronous remote replication relationship, you need to do an initial synchronization.

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Which of the following is not the advantage brought by global cache?

• A.To improve the overall system performance.
• B.To improve system security and reliability.
• C.To improve the data hit ratio.
• D.To improve cache space utilization.

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