Hard disk speed

Speed (Rot ati onl Speed), the rotational speed of the hard disk spindle motor, i.e. the maximum number of revolutions of the disk in the hard disk can be completed within one minute. The speed is one of the important parameters that indicate the grade of the hard disk. It is one of the key factors that determine the internal transfer rate of the hard disk. It directly affects the speed of the hard disk. The faster the hard disk rotates, the faster the hard disk seeks files and the faster the hard disk transfer speed. Hard disk speed is expressed in revolutions per minute. The unit is expressed as RPM. RPM is an acronym for Revolutions Perminute and is RPM. The larger the RPM value, the faster the internal transfer rate, the shorter the access time, and the better the overall performance of the hard disk.

The spindle motor of the hard disk drives the disk to rotate at a high speed and generates buoyancy so that the head floats above the disk. To bring the sector of the data to be accessed under the head, the faster the speed, the shorter the waiting time. Therefore, the rotation speed largely determines the speed of the hard disk.

The speed of home ordinary hard disk is generally 5400rpm, 7200rpm two, 7200rpm high-speed hard drive is now the desktop user's first choice; and for notebook users is 4200rpm, 5400rpm based, although there have been companies released a 7200rpm notebook hard drive, but In the market is still relatively rare; server users have the highest performance requirements on the hard disk, the server uses the SCSI hard drive speed is basically used 10000rpm, and even 15000rpm, the performance of more than a lot of home products.