While hard disk technology nowadays has advanced by leaps and bounds and developed a lot in terms of capacity, too many files in the hard disk, although there is still space, you will find that the performance does drop when there are fewer files relative to each other.

If you really don't need the files, most of them can be deleted directly instead of being left in the recycle bin. If you do this over a long period of time, the hard disk's tracks will become more and more fragmented, and more fragmentation will naturally affect hard disk performance.

Long-term use of the hard disk, the hard disk should not be treated as a treasure chest, what is useful and useless are stuffed into it. You should not hesitate to delete anything that doesn't work. And to regularly defragment, of course, defragmentation can not be too frequent, too late. If you have more file operations and large capacity, it is recommended to organize once every six months.