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
Answer: ABC