The parts used for PCs are a good way to save for assembly or upgrade a new car, but there is no guarantee or opportunity to return money, some components are better not to participate in the secondary market. Information port Howtogek.com speakWhy not spend money on used hard drives.
Many PC details can be purchased safely by use. In fact, from the parts purchased from your hands, you can assemble the entire computer if you do not resist the iron of the previous generation. Despite their age, many components still have worthy performance. And all due to the fact that most of the electrical parts survived in the early stages of operation and without production defects could not break by themselves. Unless fans may refuse, but this is an easy problem at home.
But the drives are a completely different conversation. Unlike video cards, processors or motherboards, equipment to store information we use today, we wear one way or another. And the longer they are used, the more they are often broken, and sometimes without any symptoms.
Because what used the hard drive is a risk purchase transaction
There are two potential factors that can kill the hard drive: mechanical and electrical decomposition.
Disks stores binary information on a rotating disk – in this sense, they can be compared to vinyl records. The only difference is that the data on the disks exists in digital form and is read by a special end, moving along the surface of the disc. It rotates very quickly, at a speed of 5,000 to 10,000 rpm, depending on the disc model. The faster the rotation, the higher the reading speed and information recording.
Of course, like all mechanical devices, the hard drive sooner or later may wear out. For example, over time, the reader may be broken or the rotating engine will become unable to use. If at least one of these details refused, the last disc is the end. A characteristic sound that often warns about ambulance-the sad clicks of the dead arising from a reader. Listening to this sound, it is better to immediately receive the creation of backup copies of important documents.
In addition, the combination of fragile details makes the hard drive vulnerable to physical damage. They cannot be released on hard surfaces. If the disk suddenly grinds the dynamic at the time of the movement of the reader, it can scratch the surface of the disc, which will lead to loss of data and permanent damage to injured disk industry.
Because what used SSD is a risk purchase transaction
SSD, unlike traditional hard drives, has no movement details – but this does not mean that they are not threatened to wear out.
SSD includes billions of small electrical cells storing information. Reading data in cells does not cause damage to them, but the data recording gradually exhausted their working resources. At some points, the last cells lose the ability to record data and mass of the drive.