MinIO only charges for the actual amount of data stored in the system. This excludes any redundant data such as the erasure-code parity data. For example, If the erasure parity is set to 4 in MinIO, then 100TiB worth of objects will consume 134TiB of drive space including the parity data. You will be charged only for 100TiB data. This provides our customers with no disincentives with regard to higher parity choices.