Which of the following descriptions are correct about the hard disk interface? (Multiple Choice)

• A.The hard disk interface is to connect the hard disk to the host system
• B.The hard disk interface is the hard disk cache and memory for data exchange
• C.The speed of the hard disk interface affects the data exchange between the CPU and the memory
• D.The speed of the hard disk interface affects the performance of the storage

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The initial capacity allocation strategy of the Huawei OceanStor V3 storage system defaults to automatic allocation.

• A.True
• B.False

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Which of the following descriptions of RAID striping related concepts are correct? (Multiple Choice)

• A.Striping technology divides a continuous piece of data into many small parts and stores them on different disks.
• B.After striping, the speed that the RAID group can provide is faster than that of a single disk
• C.Striping is a technology that automatically balances the I/O load to multiple physical hard drives
• D.Single or multiple consecutive sectors in a single hard disk form a strip, which is the element that makes up the strip

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Which of the following descriptions about SCSI is wrong?

• A.Support communication between different devices.
• B.The latest is that the protocol transmission speed can reach 1GB/S
• C.SCSI, the interface of a small computer, is a protocol system.
• D.Experienced the changes of SCSI-1, SCSI-2, SCSI-3 and other versions.

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Which of the following RAID technologies need to calculate parity data when writing data? (Multiple Choice)

• A.RAID 50
• B.RAID 3
• C.RAID 6
• D.RAID 0

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