Windows7 system SSD optimization is more powerful

Just see this title, many users will have a question: What is the SSD, what is the difference between it and the ordinary hard disk? In fact, simply use solid-state electronic storage chip The hard disk made by the array, the interface specification and definition, function and usage of the solid state hard disk are the same as those of the ordinary hard disk, and the shape and size of the product are also consistent with the ordinary hard disk. Since the advent of Windows 7, SSDs have begun to heat up. Microsoft has also placed SSDs in key positions. Now we will introduce the new system to optimize the SSDs.

First, the performance of SSDs is degraded. Request operations with Trim

Flash blocks, pages, and cells must be erased before they can write new data, so the newly purchased SSDs perform well, but the time is up. When you grow up, you can feel a decline in performance. Intel has tried to solve it by upgrading the firmware.

Microsoft said that they have observed this phenomenon, but it is not as serious as everyone thinks. In fact, apart from the benchmark test, the user basically does not feel different in daily operations.

Of course, vendors are still obligated to maximize performance. The hardware manufacturer first completely erases the SSD before it leaves the factory (similar to the low-level formatting of the hard disk), and the second is to prepare a special space for dense burst writes. The enterprise hard drive will even reserve up to 50% for this purpose. Space to maintain a high sustained write speed for a long time.

Microsoft also uses a "Trim" mechanism in conjunction with SSD vendors. In Windows 7, if the SSD report supports the Trim attribute in the ATA Protocol Data Set Management (DSM) command, the NTFS file system will ask the ATA driver to issue a new Trim operation command to the SSD when the user deletes the file, telling it Related pages can be safely erased. After the SSD gets this indication, it will not rush to perform the erase operation, but wait for the right opportunity, that is, when there is a write operation again, because the relevant page can be reused at this time, there is no need to perform the wipe. Except for the operation.

For example, if a 128KB file contains a 128KB file, if the file is deleted and the Trim operation is performed, the SSD can avoid the bytes in this block. The other bytes required for subsequent writes to the block are mixed, which greatly reduces the "wear and tear" of the SSD.

In Windows 7, Trim requests are not limited to delete operations, but are fully integrated with partition and volume level commands, file system commands, and system restore functions.

Second, Windows 7 optimization and default behavior brief

On SSD, Windows 7 will disable disk defragmentation, because the SSD random read operation mechanism is very good, defragmenting files No more help.

Windows 7 also disables SuperFetch, ReadyBoost, and boot and program prefetch by default on SSDs. These features are designed for traditional hard drives.

Windows 7's built-in partition creation tool also takes into account the characteristics of SSDs. Of course, it's best to put the system partition on a solid state drive.

III. Frequently Asked Questions

1. Will Windows 7 support Trim?

Support. See above.

2. Will defragmentation be disabled by default on SSDs?

Windows 7 defragmentation will exclude SSD partitions, and if the hard disk partition random read performance exceeds 8MB/s, defragmentation will ignore it.

The 8MB/s metric is internally analyzed by Microsoft and will be added to the final version of the system. In fact, this rule is of little significance, because the SSDs are generally 11-130MB/s, and the 182 traditional hard disks tested only have more than 2MB/s, and all others are at 0.8-1.6MB/s. Previous12Next page Total 2 pages