The serial number and model of a hard disk are different, which is fundamentally different.

The explanation is as follows

1. First of all, the hard disk model is a number given by the hard disk manufacturer to a certain specification and certain technologies;

2. As far as the current mainstream hard disk manufacturers Seagate and Western Digital are concerned, they usually start with brand abbreviations, such as wd of Western Digital and ST of Seagate;

3. The capacity information of the hard disk is usually indicated in the hard disk model. For example, the Seagate hard disk in the above figure has a capacity of 3TB and the Western Digital hard disk has a capacity of 1TB;

4. The model of the hard disk is exactly the same as the product of the same model;

5. the serial number of the hard disk is sn, which is the specific number assigned to the product, that is to say, even the products of the same model and batch have different serial numbers. Manufacturers have a special database to query, so as to determine the sales channels, production time, product warranty and other important information.

Extended information:

Hard disk maintenance

1. Avoid power failure when reading and writing

The rotation speed of hard disk is mostly 54 rpm and 72 rpm, and SCSI hard disk is even 1 rpm to 15 rpm. When reading and writing, the whole disk is in a high-speed rotation state. If the power supply is suddenly cut off, the head and the disk will be violently rubbed.

Therefore, when turning off the computer, be sure to pay attention to whether the hard disk indicator light on the chassis panel is not flashing, that is, you can turn off the computer according to normal procedures only after the hard disk has finished reading and writing. Never cut off the power supply when the hard disk indicator is flashing. If it is a mobile hard disk, it is best to delete the hardware safely first, and then unplug it successfully.

2. Keep a good environment

Hard disks have high requirements on the environment. Sometimes serious dust collection or excessive air humidity will cause short circuit of electronic components or oxidation of interfaces, which will lead to instability or even damage of hard disk performance.

3. Protect against vibration

Hard disk is a very precise storage device. When reading and writing, the floating height of the magnetic head on the surface of the disk is only a few microns; Even when it is not working, the magnetic head is in contact with the disk. When the hard disk is working, it is easy to cause the head to collide with the data area, which will damage or scratch the disk and lose the file data stored in the hard disk.

Therefore, never move the computer or the hard disk when working or before the spindle motor stops after shutdown, so as not to scratch the magnetic layer on the surface of the disk when the head collides with the disk. In addition, extra care should be taken during the installation and disassembly of the hard disk to prevent excessive shaking or violent collision with the iron plate of the chassis.

4. Reduce frequent operations

If you run a program for a long time (such as large-scale software or playing games), or use BT to download software for a long time, you should pay attention at this time, so that the magnetic head will read and write the same hard disk location (that is, the sector where the program is located) frequently for a long time, resulting in bad tracks on the hard disk.

In addition, if an operating system is used for a long time, the hard disk sector (immovable) where the system files are located will be in a long-term reading state, thus accelerating the damage speed of this sector. Of course, it is best to install two or more operating systems alternately to avoid long-term reading and writing operations on a sector of the hard disk

Reference: Baidu Encyclopedia-Hard Disk Serial Number Identification

Reference: Baidu Encyclopedia-Hard Disk.