Which of the following descriptions are correct about IP scale-out expansion? (Multiple Choice)

• A.IB protocol can be used
• B.PCIe protocol can be used
• C.TCP/IP protocol can be used
• D.iwaRP protocol can be used

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Description 1: The data recovery of the snapshot depends on the source data.
If the source data is physically damaged, it cannot be recovered.
In this case, the clone can still recover the source data.
Description 2: After the source data is damaged, LUN copy must make a complete copy of the backup data to restore the source data.
The clone only needs to restore the damaged data, which greatly shortens the recovery time.
-Snapshot: The data recovery of a snapshot depends on the source data. If the source data is physically damaged, it cannot be recovered. In this case, the clone can still recover the source data.
-LUN copy: After the source data is damaged, LUN copy must make a complete copy of the backup data to restore the source data. The clone only needs to restore the damaged data (incremental copy), which greatly reduces the recovery time.
-Remote replication: Remote replication can only protect data between storage devices. The hardware cost is high, and the remote link bandwidth is usually low, and the data recovery time is long. The cloning can realize data protection in the storage device, which can effectively save expenses and shorten the data recovery time.

• A.Description 1 is wrong, description 2 is wrong
• B.Description 1 is wrong, description 2 is correct
• C.Description 1 is correct, description 2 is wrong
• D.Description 1 is correct, description 2 is correct

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pcie can provide the business interface between the control box and the data switch for exchanging control flow and data flow information between the control boxes.

• A.True
• B.False

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Which of the following is the correct configuration process for the Huawei OceanStor V3 storage system?

• A.Create LUN->Add Mapping->Create Storage Pool
• B.Create storage pool -> add mapping -> create LUN
• C.Create LUN->Create Storage Pool->Add Mapping
• D.Create storage pool -> create LUN -> add mapping

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Which of the following descriptions about Huawei RAID 2.0+ technology is correct? (Multiple choice)

• A.The hard disk types of each storage layer in the hard disk domain are the same
• B.Grain is the smallest granularity of data migration and the basic unit that constitutes Thin LUN
• C.The user can set the "RAID strategy" for each storage tier in the storage pool.
• D.The hard disk space is divided into fixed-size blocks

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