When configuring the Simpana backup software, the configurable deduplication strategy does not include?

• A.Client deduplication
• B.Global deduplication
• C.Parallel deduplication
• D.Source deduplication

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Both HDD and SSD hard disks show huge performance differences under different IO patterns. The Append Only Plog technology in Huawei's distributed storage can provide the best down-disk performance model for different hard disk types.

• A.False
• B.True

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When using Huawei Distributed Storage Block Service, which of the following description of the asynchronous remote replication feature disaster tolerance cluster are correct? (Multiple choice)

• A.A single disaster tolerance cluster cannot meet the subsequent rapidly growing disaster tolerance business needs
• B.Disaster recovery clusters have good elastic scalability
• C.Users can deploy disaster recovery clusters on demand, which are logical objects that provide replication services
• D.Disaster recovery clusters can be deployed on storage nodes or on independent servers

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Regarding the multi-NameNode concurrency characteristics of Huawei's distributed storage products, which of the following statements are correct? (Multiple choice)

• A.Multi-directory metadata operations, multi-node full concurrency
• B.Multiple Active NameNodes provide metadata services, and the data among multiple nodes is consistent in real time
• C.The number of files supported by multiple Active NameNodes is no longer restricted by the memory of a single node
• D.Avoid metadata service interruption caused by traditional HDFS NameNode switching

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Regarding the switch used in the Huawei Oceanstor 9000 system, which of the following options are correct?

• A.CE6810 switch provides 10GE/GE access
• B.The switches used in configuration with Oceanstor 9000 storage system include CE6810, S5752/S5352 and IS5023.
• C.S5700/S5352C switche provides GE access
• D.IS5023 switch provides IB access

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