In the beginning, I precleared an 8tb drive that I was replacing in my main server, so that I could put it in my secondary server, to replace a 2tb drive I was getting errors on. After preclearing was done I turned the secondary server off and replaced the drive, 2tb for 8tb. I changed slot 1 to the new drive and started the array. Then it asked to format the drive, and this is where I figured I did something wrong. I think I said format during parity rebuild, then I got spooked, so I stoppe