Erasure Coding

Erasure Coding vs Replica

Erasure Coding vs Replica Ceph RadosGW (RGW), Ceph’s S3 Object Store, supports both Replica and Erasure Coding. Most all examples of using RGW show replicas because that’s the easiest to setup, manage and get your head around. Replicas simply means that a default of 3 means that RGW stores the original plus two more copies spread out within the cluster based on the Crush Map, Ceph’s way of calculating where to store objects.

Continue reading