this post was submitted on 18 Aug 2023
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My SanDisk 512GB 3D had a similar behaviour issue.
Read was okayish but writing was exorbitant slow for a SSD at 10MB/s sequential.
Backup Asap.
Interesting. I've only had one brand of SS/flash drive actually fail (ADATA UE700, and replacement). But most of mine seem to heat up very quickly, then soon throttle the speeds (probably to mitigate further heat or death). The T7 will be my first portable SSD for larger backups, and I hope it handles heat much better.
I am/was using mostly WD Passport HDDs for backups, which I disconnect and put in a safe. Shocked that this newest one has only 30 hours usage, very gentle handling (same as others), yet it's apparently failing. (So tired of worrying about tiny fragile spinning disks and mechanisms!) Will backup, and try deleting some files, hoping maybe it just hates being nearly full (about 70-80%). SMART data says it's healthy, but maybe would until it's too late.
My sandisk ssd also said it's "healthy". If it shows abnormal behavior for now reason it's getting faulty. Expected heat (like a good data transfer) is not abnormal but my problem happened with every data transfer.
Both CrystalDisk and the Sandisk tool said it was healthy. Took me 2 or 3h to fully transfer about 250gb from my ssd to my new one.