A 2,5TB Disk of my array with 3TB parity had read errors, so I replaced it with a 4TB Disk. I thought I could use 3TB of this 4TB disk because of the smaller parity drive, but unRaid told me to do a swap-disable. After a bit of reading in the forums I did as told. unRaid copied the parity drive to the new disk, rebuilt the 2,5TB drive on the former parity disk and expanded the array.
Then I started the parity check. Every now and then I looked at the progressing parity check via webgui and everything looked fine. But now at nearly 90% complete, I looked again and I have thousands of sync errors, starting in sector 5860533064 and then all eight sectors. Is that because I didn't preclear the parity disk, so that the part of the disk > 3TB is not initialized? Should I do a second parity check with correcting parity and everything is back to normal?
Thanks for your help!
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