Which of the following statements about deploying Huawei active-active data centers are true? (Multiple Choice)

• A.Quorum software can be installed on a physical server or a virtual machine. The quorum server is connected to the two storage arrays in the active-active data centers over an IP network.
• B.The transmission layer uses Huawei OptiX OSN series DWDM devices. Two wavelength division devices are deployed at each site.
• C.On the network layer, at least two independent GSLBs must be deployed at each site for load balancing between the two sites.
• D.The storage layer does not support the following practice: One OceanStor V3 storage system takes over LUNS from a third-party storage system. Then, a third-party LUN and a LUN on another OceanStor V3 storage system form active-active LUNs.

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A C72 node is a 4 U large-capacity archive storage node. It can be fully populated with 72 SAS disks to adapt to the scenarios that have demanding requirements for both performance and capacity

• A.FALSE
• B.TRUE

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Huawei's hyper-converged storage uses a distributed storage logic architecture. Which of the following is the function of the OSD module?

• A.Provide hard disk management
• B.Provide management of storage cluster status
• C.CHASH partition
• D.Provide standard SCSI/iSCSI services for VMs and databases

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Which of the following is not the OceanStor 9000's characteristics?

• A.The OceanStor 9000 adopts distributed metadata management and supports linear expansion from three to 4000 nodes.
• B.The OceanStor 9000 adopts OceanStor DFS, Huawei-developed distributed file system, to store massive unstructured data and supports global namespace.
• C.The OceanStor 9000 supports interconnection with Fusioninsight Hadoop or Cloudera Hadoop which are developed from the open-source Hadoop components, helping users easily build an enterprise big data analysis platform.
• D.The OceanStor 9000 provides object storage service compatible with Amazon Simple Storage Service (S3) APIs and OpenStack Swift APIs.

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n the Huawei Oceanstor 9000 software architecture, the distributed object storage layer is built on the basis of the distributed file storage layer.

• A.False
• B.True

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