INTRODUCTION
SSDs write to pages in blocks but can only delete entire blocks. Garbage Collection moves active data to a new block, clearing the old one. TRIM minimizes unnecessary operations, reducing wear and improving SSD efficiency.
Trimming Away Unneeded Data
It can get tricky when deleting files from SSDs. What TRIM does is instantaneously mark the files that you delete to be removed during the next Garbage Collection run. These files might otherwise have been shuffled around the SSD causing unnecessary wear.
Fewer Cycles for a Longer Life
Strictly speaking TRIM is not a necessity, but it will always improve the Garbage Collection process. With the two technologies working together the lifespan of your storage device is drastically increased.
