Why do solid-state drives not require disk defragmentation?

For older players, the word "Disk Defragmenter" must be a stranger. As a built-in windows for the hard disk and other storage devices to defragment the tool, to some extent, reduce the hard disk miscellaneous files piled up, speeding up the speed of disk operation, thereby enhancing the overall speed of the computer. This promotion for some poor performance, the use of mechanical hard disk of the old host, is still particularly valuable.

However, to the solid state hard drive happy enclosure, the mechanical memory weak decline in the moment, disk defragmentation has faded out of our view, more and more people say that the SSD does not need to defragment the disk.

So why do solid-state drives not require disk defragmentation? Before we solve this problem, let's take a look at exactly what disk defragmentation is.

Disk defragmentation as the name implies, is through the system software or professional disk defragmentation software to the computer disk in the long-term use of debris and messy files to reorganize, can improve the overall performance and speed of the computer.

We know that disk fragmentation occurs over time as files are dispersed to different parts of the entire disk, rather than being kept continuously in a contiguous cluster of disks.

From the principle of disk fragmentation, we see that the secret to disk defragmentation's ability to improve personal computer performance is to accelerate the speed of the computer by defragmenting the disk files, making the fragmented files integrated, and speeding up the disk seek time.

　　Charge-seeking is almost zero-time consuming

We know that the solid-state hard disk storage unit, is based on the flash memory particles of the electronic storage, so in the search time is theoretically immutable, affecting its performance depends on the performance of the main control chip and flash particle technology. That's why many players suggest that in the age of solid-state drives, there is no need for the first major cause of disk defragmentation.

　　The value of reading and writing of solid-state hard disk

Second, because disk defragmentation works by reopening the files stored on disk in a certain order, it is tantamount to suicide for a solid-state drive that treats the number of times it lives. The flash memory characteristics of solid-state drives determine that the number of times they are erased is limited, and once the limit is exceeded, the disk will not be able to write to the scrap disk. As a result, disk defragmentation in the age of solid-state drives is a near-suicidal act, the second biggest reason players do not recommend disk defragmentation.

　　The functional advantages of solid-state HDD self-belt trim

The third, is the solid state hard disk with the trim function, opened to fully play the solid state hard disk's overall reading and writing performance, in a sense, actually has acted as a disk defragmentation work.

To synthesize the above reasons, whether from the principle or the practical effect, disk defragmentation in fact, the existence value of the solid-state hard disk era is really very small, although from the beginning of win8 Microsoft has been on the characteristics of solid-state hard disk reorganization of the related functions of innovation, but in the current solid-state hard disk flash characteristics, Its function is also very small.