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trparky
Apple... YUM
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reply to rusdi

Re: Buggy Intel SSD 520 Series SSD Firmware

I know about that, but appears that that may indicate that a TRIM only happens when you delete files. What about an overwrite of a file?



rusdi
American V
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said by trparky:

I know about that, but appears that that may indicate that a TRIM only happens when you delete files. What about an overwrite of a file?

Overwrite doesn't happen with NAND flash. it must be deleted and written in other blocks...

Here's a nice article that might help explain the difference between TRIM, and Garbage collection.
»thessdreview.com/daily-news/late···-primer/


DarkLogix
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Baytown, TX
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1 recommendation

reply to trparky

said by trparky:

I know about that, but appears that that may indicate that a TRIM only happens when you delete files. What about an overwrite of a file?

Due to wear leveling you don't ever overwrite

overwriting nand is very slow and time consuming so instead it writes to a new location and marks the old for GC to clean up
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