ssd means solid state drive.
SSD consists of a control unit and a storage unit (FLASH chip, DRAM chip).
SSDs are identical to ordinary hard disks in terms of specification and definition of interfaces, functionality and usage, and are basically identical to ordinary hard disks in terms of product form factor and dimensions (the emerging U.2, M.2 and other forms of SSDs are completely different in size and form factor from SATA mechanical hard disks).
Widely used in military, automotive, industrial control, video surveillance, network monitoring, network terminals, power, medical, aviation, navigation equipment and many other fields.
Advantages:
1, fast read and write speed: using flash memory as a storage medium, read speed is faster compared to mechanical hard disk. Solid state drives do not use magnetic heads, seek time is almost 0. Continuous write speed is very impressive, most of the SSD manufacturers will claim that their SSD continuous read and write speed of more than 500MB/s, in recent years, the NVMe SSD can reach 2000MB/s or so, or even 4000MB/s or more.
2. Shock and vibration resistance: Traditional hard drives are disk-based, with data stored in disk sectors. The solid state hard drive is made using flash memory particles (i.e., mp3, U disk and other storage media), so the SSD solid state hard drive does not have any mechanical parts inside, so that even in high-speed movement or even accompanied by the tilt of the flip will not affect the normal use of the case, and in the event of a collision and shock can be the possibility of data loss is reduced to a minimum. Compared to traditional hard drives, SSDs have an absolute advantage.
3, low power consumption: the power consumption of solid state drives is lower than that of traditional hard drives.
4, no noise: solid state drives do not have mechanical motors and fans, working noise value of 0 decibels. Flash-based SSDs consume less energy and generate less heat during operation (but high-end or high-capacity products consume more energy). There are no mechanical moving parts inside, so there will be no mechanical failure, and there is no fear of collision, shock, or vibration. Because SSDs use flash memory chips without mechanical parts, they are characterized by low heat generation and fast heat dissipation.