TRIM is a service that runs in your operating system and works with SSD hardware to track what blocks on the drive are unused, and then prepares them for writing. When put in use, TRIM can optimize SSD performance, especially on drives that are relatively full or used for storing and deleting large amounts of data. Until now TRIM support in OS X was reserved for Apple-supplied hard drives, but with the release of OS X 10.10.4, Apple has included a tool that allows for TRIM on third-party SSD devices. Continue reading →