smilenkovski Posted May 28, 2021 Share #1 Posted May 28, 2021 I'm receiving UNC error twice this month on one WD 6TB hdd. Reporting bad sectors. I've done extended smart test and drive reported healthy, no bad sectors. But today drive reported with abnormality by dsm. I'm on 918+, 6.2.3. SHR, on Asrock mb J5040, hdd is connected on MB SATA. Prices on hdd's are going up in my country and I'm not sure what to do. Quote Link to comment Share on other sites More sharing options...
flyride Posted May 28, 2021 Share #2 Posted May 28, 2021 (edited) DSM detected a read error. It retried and was able to read the data. The sector may be flagged for replacement if the drive decided that it was bad a.k.a. "Uncorrected Pending" But it cannot actually replace the sector until a write operation happens to the drive. Only then it will say it is a bad sector. However, if it writes it, and then reads it and it is okay, it may decide it's not worth flagging it as a bad sector (Uncorrected Pending then disappears). This is not uncommon. If the drive were under warranty you might be able to press WD to replace it. But out of warranty, it's just your comfort level. If you want more advice post the entire SMART screenshot for that drive. Edited May 28, 2021 by flyride Quote Link to comment Share on other sites More sharing options...
smilenkovski Posted May 28, 2021 Author Share #3 Posted May 28, 2021 Well flyride, thanx for response Quote Link to comment Share on other sites More sharing options...
smilenkovski Posted May 28, 2021 Author Share #4 Posted May 28, 2021 The drive long pass warranty, more than 256000 hours. Quote Link to comment Share on other sites More sharing options...
flyride Posted May 29, 2021 Share #5 Posted May 29, 2021 Looks good from here. DSM retried an error and there was no loss of data integrity. I'd keep using it if it were me. Quote Link to comment Share on other sites More sharing options...
smilenkovski Posted May 29, 2021 Author Share #6 Posted May 29, 2021 Thanks. Quote Link to comment Share on other sites More sharing options...
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