The speed of home ordinary hard disk is generally 5400rpm, 7200rpm several, high-speed hard drive is now the desktop user's first choice; and for laptop users is 5400rpm-based, although there have been companies released a 7200rpm notebook hard drive, but in the market Also rare; server users have the highest performance requirements for hard drives, and the SCSI hard drives used in servers typically use 10,000 rpm, or even 15,000 rpm, and have a lot more performance than home appliances.
The negative impact of higher speed can shorten the average seek time and actual read/write time of the hard disk, but with the continuous increase of the hard disk speed, it also brings about negative effects such as higher temperature, increased wear of the motor spindle, and increased working noise. The notebook hard disk speed is lower than the desktop hard disk, to some extent is affected by this factor. The internal space of the notebook is small, and the size of the notebook hard disk (2.5 inch) is also designed to be smaller than the desktop hard disk (3.5 inch). The temperature caused by the increase in the rotational speed raises higher requirements for the thermal performance of the notebook itself; the noise becomes louder. , And must take the necessary noise reduction measures, which all put forward more requirements for laptop hard drive manufacturing technology. At the same time, the increase of the rotational speed, while the other remains unchanged, means that the power consumption of the motor will increase, the more electricity will be consumed per unit time, and the working time of the battery will be shortened, thus the portability of the notebook will be affected. So notebook hard drives generally use a relatively low speed 5400rpm hard drive.
The new technology rotation speed is changed with the increase of the hard disk motor. Fluid dynamic bearing motors have now completely replaced the traditional ball bearing motors. The fluid bearing motor is usually used in the precision machinery industry. It uses a mucous membrane oil bearing to replace the balls with an oil film. In this way, the direct friction of the metal surface can be avoided, and the noise and temperature can be minimized. At the same time, the oil film can effectively absorb the vibration and improve the anti-vibration capability; it can also reduce the wear and increase the service life.
The negative impact of higher speed can shorten the average seek time and actual read/write time of the hard disk, but with the continuous increase of the hard disk speed, it also brings about negative effects such as higher temperature, increased wear of the motor spindle, and increased working noise. The notebook hard disk speed is lower than the desktop hard disk, to some extent is affected by this factor. The internal space of the notebook is small, and the size of the notebook hard disk (2.5 inch) is also designed to be smaller than the desktop hard disk (3.5 inch). The temperature caused by the increase in the rotational speed raises higher requirements for the thermal performance of the notebook itself; the noise becomes louder. , And must take the necessary noise reduction measures, which all put forward more requirements for laptop hard drive manufacturing technology. At the same time, the increase of the rotational speed, while the other remains unchanged, means that the power consumption of the motor will increase, the more electricity will be consumed per unit time, and the working time of the battery will be shortened, thus the portability of the notebook will be affected. So notebook hard drives generally use a relatively low speed 5400rpm hard drive.
The new technology rotation speed is changed with the increase of the hard disk motor. Fluid dynamic bearing motors have now completely replaced the traditional ball bearing motors. The fluid bearing motor is usually used in the precision machinery industry. It uses a mucous membrane oil bearing to replace the balls with an oil film. In this way, the direct friction of the metal surface can be avoided, and the noise and temperature can be minimized. At the same time, the oil film can effectively absorb the vibration and improve the anti-vibration capability; it can also reduce the wear and increase the service life.
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