In the active and standby disaster recovery solution, what applications can be protected by RD at present? (Multiple choice)

• A.VMware
• B.SQL Server
• C.Oracle
• D.FusionSphere

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A Cache partition and the LUN must always belong to?

• A.The same storage device.
• B.All of the above.
• C.The same controller.
• D.The same engine.

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The clustered NAS system adopts cluster volume management technology on the basis of full interconnection of data channels and communication channels to provide global storage management. Any node in the cluster can access the same-storage space with the same volume device name to ensure the consistency of block device access.

• A.True
• B.False

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Before performing re-striping, Oceanstor 9000 will determine whether the occupied space of the node pool in the target hierarchy is higher than the read-only water level. If it is lower than the read-only water level, re-striping can be performed, otherwise no striping will be performed.

• A.True
• B.False

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In the feature of Huawei Oceanstor 9000 InfoReplicator.
Pair is a data replication relationship that describes the source and destination of data replication. What are the following statements are incorrect about the state transition of the pair? (Multiple choice)

• A.In the case of Pair failure, its status includes recovery, invalidation, synchronization, split
• B.When the abnormal link recovers and the recovery strategy is manual, the status of the Pair will be migrated to "synchronizing"
• C.When the InfoReplicator configuration is destroyed, the status of Pair becomes "Invalid"

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