Do SSDs need to be defragmented?

The answer to this question is complicated. Solid-state disks (SSDS) store data in different ways from traditional disks. For example, SSDs use a “loss balancing” mechanism to prevent rapid aging caused by frequent reads of a storage unit, which averages the number of reads and writes to each block. Current operating systems are not prepared for this either. The main principle of disk defragments is to put data that needs to be read frequently in a place that can be accessed at high speed, while data that needs to be accessed rarely is stacked in the corner. Solid-state drives, by their very nature, can find any piece of data very quickly. Current disk-titration tools do little to optimize SSD file systems. Therefore, it is recommended that SSD users disable automatic disk defragmentation and do not manually defragment.