With a solid state drive however, it is recommended that you should not defragment the drive as it can cause unnecessary wear and tear which will reduce its life span. Nevertheless, because of the efficient way in which SSD technology functions, defragmentation to improve performance is not actually required.
SSDs are able to read blocks of data that are spread out over the drive just as fast as they can read those blocks that are adjacent to one another. Furthermore, they keep track of the order the files are written using a technique called 'wear-levelling. This purposely writes data to the drive in such a way that its cells wear out evenly; which means that the drive does not degrade prematurely.
Therefore, there is no reason to defragment a solid state hard drive to try and enhance its performance or its life span. The technology that solid state drives utilise means they are perfectly capable of looking after themselves!