Catch-22 situation

I have new disks that are all larger than the current parity drives.

When a disk fails, the standard procedure is to replace the failed disk with a new one. However, the system refuses the replacement because the new disk is larger than the parity drive.

Question: why?

The system should allow installing the larger disk and use it up to the size supported by the current parity drives. It should then automatically expand to the disk’s full capacity once the parity drives are upgraded to larger ones.

Do I miss something, or this limitation can be overriden?

There's the parity swap procedure exactly for that case.

Thanks JorgeB