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

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

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There is a problem with the source LUN of remote replication, and the target LUN will take its place.

• A.FALSE
• B.TRUE

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Regarding the description of the hard disk domain in Huawei RAID 2.0+ technology, which of the following statement is incorrect?

• A.In a disk domain, disks of the same type must be of the same size and rotational speed
• B.A hard disk can only belong to one hard disk domain
• C.A hard disk domain is a group of hard disks
• D.OceanStor V3 storage system can create one or more disk domains

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Which of the following descriptions about RAID and LUN is wrong?

• A.A LUN can be created on a RAID
• B.Multiple LUN can be created on a RAID
• C.A RAID group is like a physical volume containing many disks
• D.A LUN can belong to multiple RAID groups

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Huawei ocenstor can only be expanded through PCI and Scale-out.

• A.False
• B.True

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