Can Win7 use disk defragmentation in SSD solid state drives?

Disk Defragmentation is a disk cleaning optimization tool that comes with Windows. When no other optimization software is installed on the computer, you can use disk cleaning directly to solve the redundant files in the hard disk, ensure the life of the hard disk, and improve the computer. Operating efficiency. But in the Win7 system, many small partners want to know how to clean the SSD solid state hard disk? Here is a small series to tell you the answer, no! As for the reason, let Xiaobian one by one.

Win7 Disk Defragmentation

When the SSD is smashing, the mechanical storage is weak, and the defragmentation of the disk fades out of our view. More and more people say that the solid state Hard disk does not need disk defragmentation

So why does SSD not need defragmentation?

Before solving this problem, let's see what defragmentation is.

Disk defragmentation, as the name suggests, is the use of system software or professional disk defragmentation software to reorganize the fragmentation and messy files generated by the computer disk during long-term use, which can improve the overall performance and speed of the computer.

Because files are scattered across different parts of the disk, rather than being continuously stored in contiguous clusters of disks, disk fragmentation occurs over time.

The reason why SSD does not need defragmentation

From the principle of disk fragmentation, it can be seen that the secret of defragmentation of PCs is to defragment disk fragments. Combine the fragment files into one, speeding up the seek time of the disk, thus accelerating the speed of the computer as a whole.

The charge seek time is almost zero

The storage unit of the solid state drive is based on the electronic storage of the flash memory particles, so the theoretical seek time is eternal, affecting Its performance depends on the performance of the master chip and the process of flash granules. This is why many players have suggested the first major reason for not needing defragmentation in the SSD era.

The number of SSD read and write times is precious

Second, the working mechanism of defragmentation is to re-read and store the files stored on the disk in a certain order. For a solid-state hard drive that treats the number of erasures as life, it is tantamount to self-destruction. The flash storage characteristics of SSDs determine that the number of erasures is limited. Once the quota is exceeded, the disk cannot be written as a disc. Therefore, defragmentation in the SSD era is a near-suicide behavior, which is the second biggest reason why players do not recommend defragmentation.

The advantages of STL with TRIM

The third is the TRIM function that comes with the SSD. When it is turned on, it can fully exert the overall read and write performance of the SSD. In a sense Said, in fact, has served as a defragmentation work.

Combining the above reasons, whether in principle or in reality, the value of disk defragmentation in the SSD era is really small, although from Win8 Microsoft has been targeting SSD features. The innovation of the related defragmentation function, but in terms of the flash memory characteristics of the current solid state drive, its role is also minimal.

In response to the above arguments, some netizens gave the following insights:

As early as Win8, disk components have not been called "disk defrag" & rdquo; “Optimize drive”, with both defragmentation HDD and solid-state pruning SSD, does not perform a lot of file movement and merging operations on SSD.

That is to say, even if you defragment SSD in Win8/Win10, the system will only make trim operation, which has been clearly pointed out in foreign professional forums such as superuser and Win10 forum. They even suggested that Win10 is more compatible with SSD than HDD. For some operations that damage the hard disk, it is more vulnerable to HDD than SSD.

In Win10, the biggest damage to the performance of the hard disk is not the file size of one read and write, but the number. Whether it is HDD SSD or U disk, if the number of files smaller than 20kb in an ntfs partition exceeds 100,000 (100,000), the 100,000 files will not be written together with files larger than 20k, and will be directly written. Master file table, join index, journal, and so on. Due to the limitations of ntfs, the extremely large number of small and small files read and write operations are extremely burdensome for the performance of mechanical and solid state drives. Most large-scale software (especially games with dozens of gigabytes) now packs fragmented resource files into one or several large files, minimizing the number of files and reducing the expansion of the main file table and usn journal. Even if you do this every time you run out of memory and CPU to perform the unpacking process, it is worthwhile relative to the performance bottleneck of the hard disk and the impact on life. The real killer of a hard disk is not the read and write operation itself, but a large amount of reading and writing of files smaller than 20 bytes.

In summary, the SSd SSD under Win7 system is best not to use disk defragmentation, because it is not necessary.