Hello, I'm about to replace my 2 parity drives and I just want to double check that I'm doing the procedure correctly before I start.

I have 2 parity drives (16 TB each) that are currently working fine. I want to replace them with new (24 TB) parity drives - and then I want to use the 16 TB drives as data drives on my array.

The new 24 TB drives are currently installed and have been precleared - they are showing as unassigned disks and ready to go.

What is the best way to accomplish this?

Do I simply stop the array and assign the 24 TB drives as the parity disks? Then Unraid will move parity data over to the 24 TB drives. Then I stop the array again and assign the 16 TB drives as data disks?

Is this the proper procedure for doing what I'm trying to accomplish?

If someone with more experience than myself could chime in and let me know I would greatly appreciate it! Thank you!!

You just need to assign one or both parity drives in place of the other ones and start the array to begin parity sync, once that's done, you can add the old parity disk(s) as a data drive.

Doing one at a time will be safer, in case there's a disk failure; doing both together will be faster but array will be unprotected, so do it as you prefer, depending on backups, risk factors, etc.

Another option is doing both together in maintenance mode and keeping the old parity drives intact during the sync, any issues, you can go back to the old drives, but the array is offline in maintenance mode.