RAID0 could be striping which would require all devices to be the same size or it could be concatenation which leaves it to some other layer to balance load acr

RAID0 could be striping which would require all devices to be the same size or it could be concatenation which leaves it to some other layer to balance load across drives. What I suggested allows the use of the full capacity of the drives with weighted data placement based on available space on the drives. What I suggested is not really RAID0. raidz is not really RAID5. ZFS intentionally improves on these for performance and reliability reasons.