Preserving data risls conaistency safety c/c Outline Risks of data loss and corruption ② Data consistency ●Checksums ●Block checksums ③ Data safety ●Redundancy ●Parity ●Erasure coding Conclusion 3/43 S.Ponce-CERNPreserving data 3 / 43 S. Ponce - CERN risks consistency safety c/c Outline 1 Risks of data loss and corruption 2 Data consistency Checksums Block checksums 3 Data safety Redundancy Parity Erasure coding 4 Conclusion