Speaking of mechanical hard disks, everyone loves and hates them
"Love it", that is used in servers, or NAS and other mass storage devices, mechanical hard disk has a high cost performance; "hate it" because its read and write speed is compared with the solid state drive, that is not satisfactory.
Recently, some people said that if you want the mechanical hard disk to read and write faster, you can achieve it by pressing this physical method, is it true or false?
First of all, we need to start from understanding the mechanical hard disk itself, which is mainly composed of 5 parts, namely:
1. Platter: used to store data. The faster the platter is turned, the faster the hard disk reads and writes data, but due to the mechanical structure, the speed is bottlenecked.
2. Magnetic head: read and write data on the platter. You know, the hard disk is through the head on the narrow platter track to read and write data, if the head is misaligned, it will lead to the inability to read and write the data correctly.
3. Magnetic head arm: control the magnetic head to move on the platter. If the head cannot read and write the data correctly, it is most likely related to the vibration of the head arm, and as long as the slight vibration will cause the position of the head to change.
4. Circuit board: control the work of each component of the hard disk.
5. Interface: transmit data and power supply.
Wait a minute.
From the above, it is known that the reading and writing of mechanical hard disks is mainly related to platters, magnetic heads and magnetic head arms, so why can press to improve the reading and writing speed of mechanical hard disks?
Someone once installed a mechanical hard disk on a plastic bracket and a comparison experiment on granite, and it was found that the vibration amplitude installed on the elastic material, that is, the plastic bracket was greater than that on the hard material, and the vibration of the hard disk will inevitably affect the read and write speed. This test result is more recommended to fix the mechanical hard disk in the chassis.
In addition, the vibration amplitude of the mechanical hard disk is also related to air pressure and noise. In simple terms, under high pressure, the rotation of the platter cannot produce enough airflow to support the head, which is very easy to cause bad sectors; and the noise will increase the vibration of the hard disk, thus affecting the read and write speed.
In this case, we can call it the hard disk installation is not reliable, then the ability to press the hard disk with the ability to play a fixed role, reduce the hard disk jitter, thereby speeding up the hard disk read and write speed. It sounds unbelievable, but the test results are
If you don't believe me? You may wish to use the portable hard disk mostly on the desktop, in the reading and writing of the hard disk pressure, may make it more motivated, hurry up to verify it!