Everything seems ok but its telling me that read errors been detected.

 

If the disk has not been disabled, then unRaid has successfully rewritten the contents of the offending sectors back to the hard drive. It would be a good idea to look at the S.M.A.R.T. Attributes for the drive in questionBegin Investigation Here "Parity Settings"

 

I have attached the SMART log for the parity drive and hoping everything is ok or it looks like I am going to be forking out for a new drive ASAP.

 

Could someone tell me if its look good or bad please

server-smart-20160626-1501.zip

The drive has NEVER had a SMART test done on it at all. You should at least do a short SMART test.

 

SideNote: It is best to do a full preclear on drives before trusting them with your data unless you don't care about your data at all.

 

Also, I think someone will ask that you post full diagnostics file, as the SMART report is only a tiny window into what was analyzed.

 

 

Its not a new drive so done pre clear a good few years ago. I will run smart check, thought one had been done.

 

Have attached full diag just in case too

server-diagnostics-20160626-1503.zip

Its not a new drive so done pre clear a good few years ago. I will run smart check, thought one had been done.

 

Have attached full diag just in case too

 

Well the drive says no SMART tests were ever run on it, so that's why I doubted a PreClear was done.

Must have been one heck of an oversight on my part if that's the case... Assuming its just too late to even run pre clear especially on parity?

 

I have added another 4TB WD Red today that's going through clearing. Is that different to pre-clearing if so then I know what has happened with the parity drive and all my other drives in that case

Must have been one heck of an oversight on my part if that's the case... Assuming its just too late to even run pre clear especially on parity?

 

I have added another 4TB WD Red today that's going through clearing. Is that different to pre-clearing if so then I know what has happened with the parity drive and all my other drives in that case

Yes, clearing does 0 tests or validations, while preclear is explicitly external tools/plug-ins that do extensive tests and validations.

Must have been one heck of an oversight on my part if that's the case... Assuming its just too late to even run pre clear especially on parity?

 

I have added another 4TB WD Red today that's going through clearing. Is that different to pre-clearing if so then I know what has happened with the parity drive and all my other drives in that case

Yes, clearing does 0 tests or validations, while preclear is explicitly external tools/plug-ins that do extensive tests and validations.

 

Stopped the clearing and installed pre clear plugin and added the script. Running this now on the new drive. However clearly I have never done this on my 5 other drives is it still possible or simply too late. Assuming would have to do 1 drive at a time and then rebuild it?