A colleague is working on an active-active disaster recovery solution. Through testing the bandwidth of the arbitration server to the storage system at both ends is 4Mbit/s, the delay RTT is less than or equal to 40ms, and the packet loss rate is less than or equal to 1%. What will happen to this solution?

• A.Not feasible, because the packet loss rate of active-active disaster recovery must be less than or equal to 0.1%.
• B.Not feasible, because the active-active disaster recovery bandwidth must not be less than 10Mbit/s.
• C.It is not feasible because the RTT of the active-active disaster recovery delay is less than or equal to 120ms
• D.Feasible, because it meets the conditions of the active-active disaster recovery plan.

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The NAS system focuses on which of the following types of data storage and management management?

• A.Continuous data block
• B.File data
• C.Small messages
• D.Chunk data

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In terms of configuring active/passive disaster recovery, which condition the LUNs on the primary and secondary storage systems must meet?

• A.The secondary storage system must be equipped with the same types of disks as the primary storage system, and a secondary LUN must have a larger size than or the same size as the primary LUN.
• B.A secondary LUN must have a larger size than or the same size as the primary LUN.
• C.A secondary LUN must have the same size and RAID level as the primary LUN.
• D.The secondary LUN only needs to have the same size as the primary LUN.

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Which of the following descriptions of cloud storage systems are correct? (Multiple choice)

• A.The OceanStor9000 storage system will also become a part of the cloud storage system in the future
• B.The scalability of the OceanStor9000 storage system is better than that of the cloud storage system
• C.Huawei's cloud storage system can only provide storage services to Huawei's cloud platform and users on it
• D.Huawei's cloud storage system can provide storage services to users of the VMwaxe cloud platform

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Regarding target deduplication, which of the following description is incorrect?

• A.The data block is transferred from the source end to the target end, and the deduplication operation is performed on the target end.
• B.Target end deduplication is equivalent to post-processing deduplication (Post-procesig).
• C.Cannot save transmission bandwidth.
• D.Does not occupy the resources of the source.

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