Back up and restore data using snapshots

A brief description of how Hyper-Converged Database (HCD) backs up data.

Steps for taking a global snapshot or per node.

Steps to delete snapshot files.

Steps to enable incremental snapshot backups. When incremental backups are enabled, HCD hard-links each memtable flushed to an SSTable to a backups directory under the keyspace data directory.

Methods for restoring from a snapshot.

Steps for restoring a snapshot by recovering the cluster into another newly created cluster.

Steps for recovering from a single disk failure in a disk array using JBOD (just a bunch of disks).