Hard disk inside
When a person first collects a computer, he sometimes does not even know what he is made of. After working for several months on it, the user begins to think about what is still in this box. The first thing he learns about is the processor. Three times – the motherboard, the third – the hard drive, which actually will be discussed.
Winchester works on the principle of magnetically recording and reading information from a rotating disk. By the way, if you disassemble the hard drive and hang the disk itself on the wall, you get a very good small mirror. This reflective side is called the work surface.
When you record information, it is converted into electrical signals. They are also read by the head from the disk itself. When reading everything happens exactly the opposite. The electrical signals that are under the head are converted into digital information.
A typical modern hard disk drive consists of a block (package) of disks, a spindle drive of a disk rotating drive, a write / read head unit, a head preamplifier and a controller (a printed circuit board with electronic control circuits).
When you turn off the computer, the head, which previously “worn” on the disks, stops and moves to a certain place – it is called parking. If we talk about the first models of hard drives, then they used additional features to translate the head to the parking lot. Now, as soon as the disk slows down its course, the head automatically goes into the zone allotted to it.
To disassemble the hard drive you need to make a little effort. Especially if you do it for the first time. A couple of incorrect movements and your hard drive can be thrown into the trash. When you open the hard drive cover, the most memorable will be a rather colorful spindle engine and the disks themselves. There is nothing more to look at in the hard drive.
The hard disk itself is enclosed in a box, which is called the HDA. It provides for the flow of air outside and vice versa, and there is also a filter that retains small particles so that they do not damage the disks on which information is recorded.
Modern hard drives are very widely used system SMART (Self-Monitoring Analysis and Reporting Technology). Why is this system good? She pre-analyzes the health of the hard drive and in the future gives the user information about his condition. So you can avoid the instantaneous combustion of the hard drive. He will warn you in advance about his emergency condition so that he can save the information you need.
That’s all what is the hard drive. Not so much detail, but how many functions it performs. And this material you are reading from someone’s hard drive.