Incremental backups instruct Apache Cassandra to create links to newly flushed memtables since the last snapshot was taken. This has the effect of keeping point-in-time snapshots up-to-date with the latest writes. Incremental backups are disabled by default, but can be enabled by editing the following line in the cassandra.yaml file of each node:
incremental_backups: true
As with snapshot files, it is a good idea to move incremental backups to another instance for storage.
