Look into Mergerfs+Snapraid. I’ve recently started using this setup for my media drives and it works great. Mergerfs allows you to treat any mixture of drives as one giant pool, while snapraid allows you to define parity drives for that pool. However snapraid requires each parity drive to be as big as your largest data drive. But this is a flexible and economical setup if you already have disks
Look into Mergerfs+Snapraid. I’ve recently started using this setup for my media drives and it works great. Mergerfs allows you to treat any mixture of drives as one giant pool, while snapraid allows you to define parity drives for that pool. However snapraid requires each parity drive to be as big as your largest data drive. But this is a flexible and economical setup if you already have disks