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A solid-state drive (SSD) (also known as a solid-state disk though it contains no actual disk, nor a drive motor to spin a disk) is a strong state storage device that uses coordinated circuit gatherings as memory to store information tenaciously. SSD technology principally utilizes electronic interfaces good with conventional piece info/yield (I/O) hard plate drives, which allow straightforward substitutions in like manner applications. Moreover, new I/O interfaces, as SATA Express, have been intended to address particular prerequisites of the SSD technology.
SSDs have no moving (mechanical) parts. This recognizes them from conventional electromechanical attractive plates, for example, hard circle drives (HDDs) or floppy plates, which contain turning plates and versatile read/compose heads. Contrasted and electromechanical circles, SSDs are normally more impervious to physical stun, run noiselessly, have lower access time, and less idleness. Be that as it may, while the cost of SSDs has kept on declining after some time, purchaser grade SSDs are still approximately six to seven times more lavish per unit of storage than shopper grade HDDs.
Starting 2014, most SSDs utilization NAND-based flash memory, which holds information without force. For applications obliging fast get to, however not so much information determination after force misfortune, SSDs may be developed from random-access memory (RAM). Such devices may utilize separate force sources, for example, batteries, to keep up information after force misfortune.
Hybrid drives or solid-state hybrid drives (SSHDs) join the components of SSDs and HDDs in the same unit, containing a substantial hard circle drive and a SSD reserve to enhance frequently accessed data.