Upgrading to larger parity drive + swapping bad data drive

[ClutchAviator]

As the title says, I am just having bad luck lately with my UnRaid build. A few weeks ago, I decided to upgrade the motherboard firmware, which resulted in no post screen! I figured out what went wrong and decided to upgrade to 6.12. Two days later, one of the data drives decided to give up! So I told myself, what the heck, I’ll just get new drives and build it away!

 

Now the challenge is, I have 1x 16TB parity with 2x 16TB data drives, one of which is bad. I bought two 18TB drives, hoping to swap the bad one with a slightly larger capacity while also upgrading that 16TB parity drive to an 18TB one.

My question is, how do I go about doing it? I know how to add a larger parity drive, but I am not too sure about doing that while also swapping the bad data drive. Does anyone have a suggestion?

[itimpi]

You can use the parity swap procedure that is for this specific Use Case.

[ClutchAviator]

Thank you @itimpi, I'll follow the guide. However, I'd to replace my MOBO cause I was keep getting VFS kernel panic which I narrow it down to the faulty motherboard. 

That said, how do I go about accomplishing a) upgrading to the larger parity drive and b) replacing faulty data drive. I also replaced Unraid USB to a brand new Sandisk cruzer one just in case.