Norton comes with the built-in Optimize Disk feature. Disk optimization defragments your hard disk, consolidates free space, and improves computer performance. Norton optimizes your disks automatically if they are more than 10 percent fragmented. Or you can run Optimize Disk at any time. Norton uses Windows’ defrag service to run the disk optimization.
Disk optimization is not compatible with solid-state drive (SSD) in Windows 7. In Windows 8 and later, Microsoft introduced the Defragment and Optimize Tool that carries out a general optimization to handle various kinds of hard drives, including SSDs.
In a SSD drive, the storage optimizer is responsible for carrying out disk optimization and disk cleanup during idle time.
On Windows 7, Disk Optimization(Defragmenting the SSD drive) might not make a big difference as compared to other disk types. However on Windows 8, a general optimization is carried out by the Defragment and Optimize Tool to handle various kinds of hard drives, including SSDs.
Microsoft has introduced the Defragment and Optimize Tool on Windows 8, which also includes the Storage Optimizer. In SSDs, the Storage Optimizer is responsible for carrying out disk optimization and disk cleanup during idle time on a periodical basis. This process is different from the traditional defragmentation procedure and is safe for SSDs.
On Windows 10, optimization can be initiated. A Trim command is initialized to allow the operating system to inform an SSD about which blocks of data are no longer considered in use and can be wiped out for writing the data. Trim has been available since Windows 7 but back then was pretty much invisible to the end user. On Windows 10, Trim has surfaced in the Tools menu in Drive properties in a feature called Optimize.