An enterprise purchased a distributed storage system, which contains 50 nodes. Engineer C plans and designs the installation and deployment of the storage system before deployment. According to the recommended reference configuration, when planning the network configuration, it is necessary to plan the use of aggregation switches.

• A.True
• B.False

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Which of the following descriptions about InfiniBand technology is wrong?

• A.InfiniBand technology has the advantages of high bandwidth, low latency, and good system scalability
• B.The switch is the basic component in the InfiniBand structure
• C.InfiniBand technology is often applied to the connection between the servers
• D.InfiniBand technology will be widely promoted in Internet network connection

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The offline upgrade process of the Huawei Oceanstor 9000 software version will interrupt the business operation, and the business interruption time depends on the upgrade execution time.

• A.True
• B.False

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Regarding the application of the InfoStamper feature, which of the following options are correct? (Multiple choice)

• A.After the remote replication task is started, snapshots are created regularly at the set time interval, and then the data at the time of the snapshot is synchronized to the slave end, each time only the incremental data between the current snapshot and the previous snapshot needs to be copied
• B.The anti-virus server reads files through snapshots, checks and kills viruses, and isolates them
• C.When the file data in the source directory is accidentally deleted, overwritten, or damaged by non-physical media such as virus intrusion, it can be restored through the files in the snapshot directory before the time of the failure.
• D.Snapshot avoids data loss caused by 2 failures, and supports fault-tolerant processing of comprehensive failure sub-health disks

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OceanStor9000 Wushan distributed file system supports online node expansion, storage capacity and computing power increase linearly, and finally provides users with linearly increasing bandwidth and concurrent data.

• A.True
• B.False

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