Why it matters

DR is compliance + business requirement. Understanding shapes backup strategy.

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The architecture

Snapshot: metadata pointing to HFiles at snapshot time.

Export: copy snapshot to another cluster.

Backup + DR optionsSnapshotpoint-in-time metadataExportcopy to another clusterReplicationasync DR clusterSnapshot + export gives point-in-time DR; replication gives near-real-time
DR patterns.
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How it works end to end

Snapshot mechanics: doesn't copy data; references existing HFiles.

Export: copies referenced HFiles to remote cluster.

Replication: async cross-cluster; near-real-time.

Testing: regularly restore from backup to verify.