What are the technical indicators of hard drives?

The technical indicators of the hard disk are: 1. Single disk capacity; 2. The speed of the hard disk, the higher the speed, the faster the reading speed; 3. The speed ability of the hard disk to read and write data; 4. The data transfer rate, which refers to The speed at which the computer reads data from the cache through the hard disk interface and delivers it to the corresponding device.

#The operating environment of this article: windows10 system, thinkpad t480 computer.

The first important performance indicator is the single disk capacity. Since computer hard drives are composed of one or several discs, the higher the capacity of a single disc, it means that the manufacturer's disc production is highly integrated, which also reflects the manufacturer's high ability to produce hard drives.

The second performance indicator is the rotation speed of the hard disk. The higher the rotation speed of the hard disk, the faster the reading speed.

The third indicator is the time it takes for the hard disk to move on the disk, read and write the magnetic head, and find the specified location. What he is describing is the speed at which a disk can read and write data.

When the head moves to the track where the data is located, wait for the specified data to rotate under the head. This time is called the average latency. The shorter the average latency, the shorter the time it takes for the hard disk to read data.

The average access time refers to the time required for the magnetic head to reach the target track position from the starting position and find the specified data from the target track. Similarly, the shorter the average access time, the faster the hard drive will be.

The last one is the data transfer rate. The data transfer rate refers to the speed at which the computer reads data from the cache and delivers it to the corresponding device through the hard disk interface.

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