I think this is possible but there may be angles I'm not aware of so please let me know if I'm crazy(er):
I'm copying from an existing, working, parity-protected array to a new, completely empty array.
If I run with the parity drive I'm getting write speeds of 30-40MB/s.
Can I remove the parity drive and restart the array in an unprotected state? This will mean unraid won't have to sync two disks when I copy. I am aware this new system will not have parity protection until I rebuild the parity but I'm not really terribly concerned about that because the data origin has protection.
After I've done the copy (~30TB), can I re-assign the parity drive then rebuild? Would I miss anything other than parity protection on the new system by doing this?