I don't know yet if only the early production dates are affected, or if this is a more widespread problem that only manifests after around half a year of use, but with almost all drives. I also worry about my two other 870 EVOs. Most users don't know of this issue yet and the drives have only been sold for a year. I wonder how many ticking timebombs are out there. Get any important data off of it and RMA it. Yup there we have it, it's a full-blown failure. You can then upload screenshots of the data, press CTRL-S to screenshot in there. In there under "Function" -> Advanced Feature -> Raw Values, select "10 " to have human-readable values. You can read out the self-monitoring SMART values of your drives with CrystalDiskInfo. Non-zero "Uncorrectable Error Count" and "ECC Error Rate", and especially if those two keep rising when you read/write files. But now this looks very different, i can't even copy some files anymore.Ĭheck your 870 EVO SSDs for these things:Įlevated "Reallocated Sector Count", "Used Reserve Block" and "Runtime Bad Block" count - first warning sign (my two other 870 EVOs have none). I know from other SSDs that there can be bad blocks even if they are new, so i didn't worry too much. I saw one or two files failing to be read from this SSD before, but i thought, maybe they were corrupted in some way and didn't pay it much mind, since the SMART still didn't look too terrible. It's hard to give the total stats of how many percent of files are affected, but it's a serious issue already even if it's less than 10% of the files affected. For some other files, the count seems to increase a little bit, but they still copy over, suggesting they are partly corrupted now. Some files i'm completely unable to copy, it just can't read a certain part of them from the SSD anymore. Each time i try to read a damaged file, it rises. I started a while ago with "Uncorrectable Error Count" and "ECC Error Rate" already at over 600, now i tried to copy my files to a HDD, and i'm at 2000 for each value and counting. Each time a file cannot be read, "Uncorrectable Error Count" and "ECC Error Rate" keep rising by a couple dozen or even couple hundred! Power on count is 273, "Reallocated Sector Count" is on 329, this last one is already a bit worrying. On my affected drive, CrystalDiskmark reports Health 99%, Wear Leveling Count 5, around 12 TB written. Explorer aborts with a failure message, other tools the same. Just today, i really started to notice the issue, some files just couldn't be properly read/copied off the drive, no matter what. 's just one example of such a thread, there's many more on different forums, just google for "870 evo failing" or the like. For example, i have three 870 EVO 4TB, only one is affected (so far), serial number S6BCNG0R207xxxx from February '21. This seems to primarily affect drives produced in January/February 2021. Certain 870 EVO 4TB and 2TB drives are affected by early failures where they develop uncorrectable errors and some data just cannot be read from them anymore.
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