Why is Disk Defragmenter illuminated on SSD?

pu1. Disk defragmentation is to attach the location of the file closely so that the header of hdd moves less when it moves, but ssd is a memory method, so there is no head, so that process is not necessary

2017-12-20

OK

pu2. SSD is unnecessary, but it's better not to use it because it has a limit to write and erase. But in the case of disk defragmentation, it makes SSD obsolete because it reads and writes huge files

2017-12-20

OK