For example, the hard drive physically moves the heads during loading and spends some time searching for the right sectors.ДЄnd SSD-memory instantly reads information from a certain block, where it is located. The secret of the speed of the drive in the principle of its device and operation. The system, programs and games load faster from flash memory. If the system loads on the hard disk for 2-3 minutes, then on the SSD - less than 30 seconds. SSD - actually, a three-dimensional flash drive with a huge speed of file read / write and random access. Its plates spin at 5400 (or 7200) revolutions per minute, and the head that reads the data floats above the surface. The hard drive, when running, resembles a gramophone. So which device and for which tasks is better to choose? Let's understand together. Floppy disks, CDs, disk drives remained in the past. NAND flash memory, due to its characteristics, has already supplanted other types of media. It has a fundamentally new organization, and it looks like a set of flash memory chips under the control of a built-in controller.

The solid state drive invaded the mass consumer market in 2009. But the physics have not changed: they still have the same set of disk plates with a ferromagnetic layer and an electromechanical drive with a block of reading heads. Modern hard disk drives - HDDs, hard drives, HDDs - are much smaller in size and their capacity has increased a million times.

At that time, one such gadget could replace 63,000 punched cards, and users gained access to the data in a split second. In the middle of the last century, the world saw the first device - IBM 350 with a capacity of 3.5 MB and weighing 1.5 kg.

Solid state drive drawbacks