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Erasure Coding
minio
MinIO protects data with per-object, inline erasure coding, which is
written in assembly code to deliver the highest performance possible.
MinIO uses Reed-Solomon code to stripe objects into n/2 data and n/2 parity blocks
-although these can be configured to any desired redundancy level.
This means that in a 12 drive setup, an object is sharded across as 6 data and 6 parity blocks. Even if you lose as many as 5 ((n/2)–1) drives, be it parity or data, you can still reconstruct the data reliably from the remaining drives. MinIO's implementation ensures that objects can be read or new objects are written even if multiple devices are lost or unavailable. Finally, MinIO's erasure code is at the object level and can heal one object at a time.