The global log is replicated using a Raft-like consensus mechanism, so that all replicas have a copy of the log, and agree on its order. So even if one replica

The global log is replicated using a Raft-like consensus mechanism, so that all replicas have a copy of the log, and agree on its order. So even if one replica site is lost, the others have a full copy of the log, and can continue. You can learn more about Raft from this excellent visualization: http://thesecretlivesofdata.com/raft/ http://thesecretlivesofdata.com/raft/