![]() Then along came “TRIM” - a more comprehensive method that basically created the ability to manage data erasures and movement at the page level. New data would continually be written to memory at a faster pace than “garbage collection” was taking place and a very high “write amplification” would occur Without TRIM, this would technically cause a slow degradation of performance as the SSD would become fuller and fuller with data, and “garbage collection” would begin to struggle to keep up. Garbage collection frees up these blocks of memory for re-use and the only drawback to this is that GC can only erase complete blocks at one time, and cannot erase individual pages within that block. Cells make up pages and are contained within blocks. Two or more bits make up one piece of information which is contained within a cell. To examine Garbage Collection (GC), we need to understand that the smallest component of a NAND flash memory module is the bit. TRIM is the command given by your OS to the SSD to clean free blocks of an SSD and make them ready for future storage. It is like building a house where an old house used to stand. This is not possible with a SSD as the SSD can only write data to a clean block. When one deletes information from a hard drive, it isn’t actually deleted, but rather, the index to that information is removed which tells the hard drive it can write over the old data. A visit over to our SSD Forum Discussion ‘ TRIMCHECK: A freeware TRIM Tester‘ will give you a ringside seat to a discussion that has seen thousands visit our little corner of the world in the last week alone. When a group of these stubborn and persistent techies put their heads together to help move something forward, one can bet on its ultimate success. ![]() ![]() When it comes to developing technology and software, those traits are what can often make the difference between success and failure. The ‘Tech Crowd’ can sometimes be a stubborn and persistent bunch. What started out as a Forum thread identifying a free new software that allows the SSD user to determine if TRIM is working, has grown to a full fledged working group where new members and our ‘in house SSD expertise’ tackle a program that seems to be grabbing the interest of the SSD community. The question of whether TRIM is working, and working correctly, remains to be one of the most active SSD discussions to date. ![]()
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