Which of the following statements about SDS software-defined storage in traditional storage in terms of storage management is correct?

• A.The LUN configuration of SDS is complicated, and it is difficult to modify the configuration.
• B.SDS mainly refers to SAN storage products with complicated management.
• C.The management unit of SDS is changed from the original traditional storage RAID group and LUN group to application virtual machine.
• D.The external management interface of traditional storage is more automated and standardization.

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In the process of TaiShan service system tuning, it is first necessary to understand the system performance metrics. In the process of network tuning. Which of the following performance indicators are more important?

• A.CPU usage
• B.Use swap space
• C.IO average waiting time
• D.Packet loss rate

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A system constructed by one or several general computing units plus one or several dedicated computing units is a heterogeneous computing system, and the calculation method for a heterogeneous computing system to perform general tasks is heterogeneous computing.

• A.True
• B.False

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A company purchased a batch of TaiShan servers to storage to the original distributed Ceph for expansion. Among them, Ceph uses the CRUSH algorithm to achieve fast and accurate data storage under large-scale clusters, and at the same time, it can achieve the smallest data migration in the event of hardware failure or expansion of hardware equipment. For CRUSE main factors affecting the algorithm are? (Multiple choice)

• A.The number of OSDs in the current system
• B.Storage file size
• C.OSD status in the current system
• D.Storage policy configuration

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Which of the following is not classified according to the network card structure type?

• A.IB network card
• B.Flexible card
• C.Integrated network card
• D.MEZZ card

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