Computers, Equipment
What is a hybrid hard drive
Now only a person far from computer technology does not know what a hybrid hard drive is. The fashion for combining several fundamentally different technologies in a single device is not new.
A pensioner ... or more alive than all living?
Currently, in the field of computing, the main device for long-term storage of information is a hard disk or hard drive (English HDD - hard drive disk). Its design and operating principle are quite simple: in a small metal case there are several disks of non-conductive electric current material. On all sides the surface of each of them is covered with a sprayed magnetic layer. The discs are threaded on a common spindle axis, rotated by the electric motor at a constant speed (in some models, it can change in steps, depending on the intensity of use). A special mechanism moves the frame with the recording / reading heads above each side.
A dark horse
However, with the creation of solid-state memory, alternative solutions appeared in the market, in which there are no rotating parts, and recording is performed by changing the position of the floating gate in the transistor. Such drives are called SSD (from the English Solid-State Drive). Many believe that information carriers based on solid-state memory cells, whose performance significantly exceeds the speed of the HDD, will gradually replace the classic hard drives. It's too early to talk about a global transition (despite the fact that there are hybrid HDDs). And that's why:
- The cost of one gigabyte of disk space for SSDs is several times higher than this parameter for HDD (the coefficient can be obtained by dividing the price for capacity);
- with reliability not all so unambiguously, Each solid-state drive is characterized by a permissible number of write / read cycles;
- the technology is too new, constantly being improved, so yesterday the purchased device may become hopelessly old today (take at least support of the TRIM team).
Hybrid Hard Drive
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