Hi,

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About one month ago, I got a new PC with only SSDs and I have been watching closely how much data has been written. Twice so far, I have noticed in SeaTools that when Windows performs its automatic drive optimization (I left it on the default “Weekly” setting), a lot of writes were added to the SSD : a few days after installing Windows, about 36 GB, and today, over 20 GB suddenly. I am sure that it’s not because of another program or Windows updates. I have been getting few writes in general in the past days and didn’t install any new program either. That’s the SSD Windows is installed on ; I have another one that only got much smaller TBW increases because of Windows’s optimization.

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My question is : is this normal, especially considering that my SSD only has 71.5 GiB of space used (2 TB total)? I know that Windows may sometimes have to defragment an SSD (https://www.hanselman.com/blog/the-real-and-complete-story-does-windows-defragment-your-ssd), but this is supposed to be once a month only.

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I couldn’t find anything else about this question on the web, besides people saying that re-trim shouldn’t do anything if TRIM could happen normally in the first place and that it shouldn’t cause additional wear on the drive, but maybe that’s wrong ?

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Could a reason this is happening be that after Windows re-trims it, the drive decides to move data around because of wear-levelling ?

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Thank you