Which of the following ideas and methods are correct for troubleshooting the QceanStor9000 DeviceManager server? (Multiple choice)

• A.Check that the CM process is normal, and then contact Huawei technical support engineers.
• B.Check if the DeviceManager process is abnormal, restart the DeviceManager process.
• C.Check if the DeviceManager process is normal, then check the CM process.

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How does HDFS Plugin store the Hadoop service data directly into the OceanStor 9000?

• A.HDFS Plugin is deployed on Hadoop nodes and is used to convert the HDFS protocol-based access requests to CIFS protocol-based access requests.
• B.HDFS Plugin is deployed on Hadoop nodes and the Hadoop client and is used to convert the HDFS protocol-based access requests to CIFS protocol-based access requests.
• C.HDFS Plugin is deployed on the Hadoop client and is used to convert the HDFS protocol-based access requests to NFS protocol-based access requests,
• D.HDFS Plugin is deployed on Hadoop nodes and the Hadoop client and is used to convert the HDFS protocol-based access requests to NFS protocol-based access requests,

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In the outline design stage, it is necessary to output HLD (High Level Design).

• A.True
• B.False

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Is the Active-Passive DR Solution feasible for the scenario where the existing OceanStor S2200T V2 and third-party storage system are deployed in the two data centers separately?

• A.No. An Active-Passive DR Solution requires at least one set of OceanStor 2600 V3 or higher-level storage.
• B.No. An Active-Passive DR Solution requires at least one set of OceanStor 5300 V3 or higher-level storage.
• C.No. An Active-Passive DR Solution requires at least one set of OceanStor S2600T V2 or higher-level storage.
• D.Yes. All conditions required for the solution are met.

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In OceanStor DFS, the MDS cluster arranges metadata of a file system in subtrees, and stores the subtrees on different nodes.

• A.FALSE
• B.TRUE

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