Is this all I need to do because my new parity is larger than any other drive I have?
Just stop the array, unassign the parity drive and then remove the old parity drive and add the new one, and start the array. The process of building parity will immediately begin. (If something goes wrong, you still have the old parity drive that you can put back!)
I have two parity drives. I want to upgrade my parity drive size from 8TB to 16TB drives. I bought two new 16TB drives, which are being pre-cleared as we speak. I know that parity drives needs to be at least the same size as my largest disk (8TB) in my array but do the parity drives need to be the same size? If they can be different sizes, should I just replace one and do a rebuild or would you recommend replacing both at the same time and doing a rebuild? Any downsides or upsides to either approach.
Also.... is there a recent guide (7.0.0) for replacing parity drives?