Which of the following statement about the key indicators that affect hard disk performance is correct? (Multiple choice)

Which of the following statement about the key indicators that affect hard disk performance is correct? (Multiple choice)
A . Applications with frequent random reads and writes, such as OLTP services, IOPS is a key measurement indicator. Another important indicator is data throughput, which refers to the amount of data that can be successfully transmitted per unit time
B . The data transfer rate of the hard disk refers to the speed at which the hard disk reads and writes data, and the unit is megabytes per second (MB/s)
C . The factors that affect the capacity of the hard disk are the capacity of a single disc and the number of discs
D . The average access time of the mechanical hard disk refers to the average addressing time of the disk

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Answer: ABC