The NAND chips are installed in parallel to increase drive performance. Storage is provided by NAND modules linked together by a controller. They, therefore, have a processor and a small temporary memory that acts as a cache. First of all, they require a chip very similar to SoCs. HDD vs SSD vs M.2 NVMe How does an SSD work?Īn SSD has several components that enable it to receive, store and send information. Similarly, their capacity, historically ranked below that of HDDs, also increased considerably.
In the following years, specialized companies refined SSDs to the point where they became the fastest storage option. For example, in 1999 the company BiTMICRO launched 18GB drives with 3.5-inch size. Over time, the first models of SSDs based on this technology appeared. Fujio Masuoka, then a Toshiba employee, brought a flash-based SSD to market. Although it may seem to be a recent technology, the truth is that the original concept was first used in the 1950s. It is a much faster alternative to traditional hard drives and was originally used to house operating system files.
What is an SSD (Solid State Drive)?Īn SSD is a permanent storage device that uses solid state electronics. On the other hand, you should know that the heads do not touch the platters while they are spinning, although it is true that the distance between the two elements has been reduced over time. To give them magnetism, they are coated with a thin layer of magnetic material with a thickness not exceeding 20 nm. Rather, an aluminum alloy or glass is used. Interestingly, the platters are not made of a magnetic material.
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