If volume all by SSD (SSD), suggest you enable SSD TRIM, this feature can improve SSDS create a volume by the read/write performance, improve efficiency and prolong the service life of SSD,
Enable the SSD TRIM
1. The TOS desktop - control panel - storage management - volume;

2.. Choose an entirely composed of SSD volume, then in the "more" drop-down menu select SSD TRIM,

3. In the pop-up window, check the enable TRIM check box;

4. Set the system to perform the SSD TRIM cycle, such as time, click ok.

5. Set up successful,