what is a ssd

A solid-state drive (SSD) is a type of storage device used in computers that stores data using flash-based memory, which is much faster than traditional hard disk drives (HDDs) . SSDs store data permanently inside an integrated circuit, typically using flash memory, and do not have the moving parts found inside mechanical hard-disk drives (HDDs) . Instead, they use interconnected flash memory chips made out of silicon to read and write data. SSDs are typically more resistant to physical shock, run silently, and have higher input/output rates and lower latency than HDDs. They are also smaller and lighter than HDDs, giving computer manufacturers more design flexibility. SSDs are commonly used to replace or augment HDDs in computers and perform the same basic functions as a hard drive, but with significantly faster performance. Types of SSDs include solid-state drives, which are basic SSDs that deliver the least performance, and more advanced SSDs that connect via Serial Advanced Technology Attachment (SATA) or serial-attached SCSI (SAS) and provide a cost-effective first step into the solid-state world.