Thanks for help and explanation. Really appreciate it.
I will get the 2 REDs replaced. Is there any best practice for doing this? Should i replace the parity first and rebuild and then change the 2nd disk, or should I do it the opposite way?
Another question, the 4TB RED have warranty till 2019. Is this something that WD will replace or not? Anyone had any experience with this?
Thanks again for all help and feedback!