Enabling the TRIM command was once thought important to maintain good write performance on SSDs. What has happened to it? Should we still be enabling it?
TRIM
Traced from recognition of the cable connection, through establishing PCI streams, to mounting the volume with APFS, and the bonus of a good trim at the end.
How APFS can trim free space in a read/write disk image and transform it into a sparse file, so it uses storage more efficiently.
Should you enable TRIM, and what is it? Do you need to turn wear levelling on, and what about fragmentation on SSDs? Some mysteries explained.
With narrowing of the cost difference between Fusion Drives and full-size SSDs, it’s worth considering likely differences in working life.
Two free tools to check how long your SSD, including those in Fusion Drives, is likely to last.
How long will the SSD in your Mac last before it fails? Some seem to be going to an early grave. Is yours?
Do I need any additional software to support it?
Most of the computer-like devices that you use now store their data on solid-state disk (SSD) rather than traditional hard disk (HD) components. Are they also the best way ahead for regular computers?
The Eclectic Light Company 