This hard disk reads a little more than 1000 and writes a little more than 500, which is very slow compared with the solid-state hard disk of nvme protocol.

The larger the RPM value, the faster the internal transmission rate and 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 high speed, which generates buoyancy and makes the magnetic head float above the disk.

To bring the data sector to be accessed under the magnetic head, the faster the rotation speed, the shorter the waiting time. So the rotational speed largely determines the speed of the hard disk.

Extended data

The number of magnetic heads is how many magnetic heads are in the hard disk, that is, how many disks are there? Maximum 255 (stored with 8 binary bits);

The number of cylinders indicates how many tracks there are on each disk of the hard disk, and the maximum is 1023 (stored by 10 binary bit);

Sectors indicate how many sectors there are on each track. Maximum 63 (stored with 6 binary bits);

Each sector is generally 5 12 bytes, which is unnecessary in theory, but it seems to have no other value.

Therefore, the maximum disk capacity is:

255 *1023 * 63 * 5121048576 = 7.837 GB (1m =1048576 bytes) or units commonly used by hard disk manufacturers:

255 *1023 * 63 * 512100000 = 8.414 GB (1m =1000000 bytes).

Baidu Encyclopedia-Hard Disk Performance Index