At present, all solid-state disk storage space consists of many memory cells; each memory cell is formed by 4KB capacity "Page" and 512KB capacity "Block". When the memory cell is empty, new data can be quickly and directly written to them. And when that contains part of the data, even if the old data only takes up 1 Page, also need to rewrite the entire Block.

At this time, solid-state hard drives have to read the entire data of Block, to determine whether the contents of the Page is still valid, and then merges with the new data and then write the whole Block. Clearly, this process is much more complex and time-consuming than the direct way. As the process exists in the solid-state hard drive data storage process, and has nothing to do with the operating system, therefore it can only rely on the automatic optimization within the SSD firmware mechanisms to solve the problem, which is called "solid-state hard drive defragmentation."

The size of the read and write block of the new SSD reached 64KB, so it can achieve a level of considerable performance. After long-term use, a large number of fragments appeared, and caused a significant decline in performance, only when reading and writing files that larger than 1MB can maintain the original level of performance. At this time, as long as the hard disk is idled after 5 minutes, Vertex automatic finishing functions can play a role, so that the performance of hard drive restore to the original level, and after a long time in idle mode it can be used as a new one.