Regarding Huawei's hybrid flash storage Oceanstor v3 SmartQos I/O priority scheduling, which statement is correct? (Multiple choice)

The correct answer is A. The I/O priority is based on the priority of the LUN where the IO is located. The priority of the LUN B. When the hard disk usage rate is too high, in order to ensure the reliability of the hard disk, the C. The resources for I/O priority scheduling include front-end host concurrent resources, back-end. See the full explanation below for the reasoning.

Question

Options

AThe I/O priority is based on the priority of the LUN where the IO is located. The priority of the LUN
BWhen the hard disk usage rate is too high, in order to ensure the reliability of the hard disk, the
CThe resources for I/O priority scheduling include front-end host concurrent resources, back-end

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