I am a new user and since the beginning I have encountered repeated parity errors, five of them each time I run a parity check. I looked here in the forum and found others having similar issues, but could not identify anything applying to my configuration.

Assuming that one of my disks may have an issue, I replaced the drive that I identified as the likely culprit. 

This changed the result of the parity check, but it still gave five errors but now at different places on the drive.

I ran the check twice on each configuration (output included here).

I'm struggling to know what next to try.parity.rtfparity.rtfparity.rtf

Have you ever run a correcting parity check?   If not then you will keep getting the same errors until you do.

Thanks.

Yes, I selected correcting check.

I have done another run since my initial post and this clearly shows that the error was corrected yet returned for the next (final) run.

parity.rtf

What disk controller do you have?    I seem to remember something like this happening with Marvel based controllers.

Yes. I looked at this but I don't have a Marvel controller.

I'm going to try again hoping for something different:-)

Perhaps you should post your system's diagnostics zip file so we can see more about your setup in case that sparks an idea in someone's mind.

Thanks, but I think the angels are with me. I came upon a post discussing a similar (but not exact) problem somebody was having.

They developed the idea that forcing a write of some data to the suspect drive, the issue could be resolved.

The logic of this eludes me, but such a simple action was worth a try.

And voila, the parity was clear and my concerns gone. (I am however not too keen on deleting that data I wrote - just in case).

I appreciate your help and suggestions which I will bear in mind for the future.