When it is necessary to uninstall the multi-path software of Huawei UItraPath host, which one of the following operations is correct?

• A.After stopping the host service read and write, immediately execute the UItraPath uninstall command
• B.In the iscsi business environment, first delete the disk mapping on the host, then disconnect all connections to the host iscsi initiator, and finally execute the UltraPath uninstall command
• C.In the FC service environment, after disconnecting all FC host physical ports, execute the UltraPath uninstall command

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Huawei's hyper-converged storage adopts a distributed hash algorithm, and the parallel HASH calculation and local memory metadata, which can expand at any level without performance bottlenecks

• A.False
• B.True

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When an OceanStor is powered by the BBU's it means that only the controller is powered.

• A.TRUE
• B.FALSE

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The Oceanstor 9000 big data storage system includes multiple subsystems. Which one is used for file storage?

• A.WushanFS
• B.FusionInsightHadoop
• C.WushanSQL
• D.Management subsystem

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Which performance indicators are covered by the routine inspection of an OceanStor 9000 system? (Multiple Choice)

• A.Node throughput
• B.CPU usage
• C.Disk usage.
• D.Memory usage

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