In the OceanStor V3 storage system, the types of hard disks in the same hard disk domain must be the same

• A.True
• B.False

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Statement 1: There is an interconnection line between the controllers of the storage system. If one of the controllers is broken, the working controller belonging to the LUN managed by it will be switched to a working controller.
Statement 2: The working controller and the owning controller of a LUN must be unified into one controller.

• A.Statement 1 is correct, Statement 2 is wrong.
• B.Statement 1 is wrong, Statement 2 is wrong.
• C.Statement 1 is correct, Statement 2 is correct.
• D.Statement 1 is wrong, Statement 2 is correct.

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Extent is the logical storage space divided on the basis of CKG. It is the smallest unit of hot data statistics. The extent size in the same storage pool can be different.

• A.False
• B.True

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Regarding the characteristics of the four disaster recovery modes of active-active, hot standby, warm standby, and cold standby, which of the following statement is wrong?

• A.The RTO time of the data center adopting the cold standby mode is long and unpredictable.
• B.Hot standby mode requires the highest software cost.
• C.When the service is unavailable due to a data center failure, the hot standby and active-active modes can automatically switch services with software, while the warm standby mode requires manual intervention, and the cold standby mode requires strong manual intervention.
• D.The data center with the active-active mode has the shortest RTO time.

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Which of the following are the key features of cloud computing? (Multiple choice)

• A.Users can self-service on demand
• B.Can quickly and flexibly provide users with capabilities, such as computing capabilities, storage capabilities, etc.
• C.The resource pool used by the user has nothing to do with the exact geographic location of the resource pool
• D.Charge according to the actual usage of users

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