Hi all, hoping for some guidance before I proceed with a parity drive swap. (Two parity drives, wanting to proceed with replacement one at a time) I have had the same 5 sector errors weeks apart, The first time I noticed these errors I started a correcting parity check, Then I rechecked with corrections and all errors returned to zero. Now, I am wanting to replace my parity drives, before doing this, I ran a non-correcting parity check and noticed the same errors on the same sectors. How should I proceed? Is it safe to proceed with my parity drive swap with these 5 errors present? (Probably unrelated) All drives but one are 4TB - one drive is 2TB, This drive spins down after a while during parity check. The Issue: I have 5 persistent parity errors appearing on the exact same sectors across two parity checks, two weeks apart. Feb 13 parity check errors: - Then I corrected parity errors, reran parity check, parity returned no errors. Feb 13 23:56:39 LF1 kernel: md: recovery thread: PQ incorrect, sector=3519069768 Feb 13 23:56:39 LF1 kernel: md: recovery thread: PQ incorrect, sector=3519069776 Feb 13 23:56:39 LF1 kernel: md: recovery thread: PQ incorrect, sector=3519069784 Feb 13 23:56:39 LF1 kernel: md: recovery thread: PQ incorrect, sector=3519069792 Feb 13 23:56:39 LF1 kernel: md: recovery thread: PQ incorrect, sector=3519069800 Feb 28 parity check errors (Same errors as before) - Feb 28 18:53:44 LF1 kernel: md: recovery thread: PQ incorrect, sector=3519069768 Feb 28 18:53:44 LF1 kernel: md: recovery thread: P incorrect, sector=3519069776 Feb 28 18:53:44 LF1 kernel: md: recovery thread: P incorrect, sector=3519069784 Feb 28 18:53:44 LF1 kernel: md: recovery thread: P incorrect, sector=3519069792 Feb 28 18:53:44 LF1 kernel: md: recovery thread: PQ incorrect, sector=3519069800