TrueNAS has long supported disaster recovery (DR) scenarios. This blog attempts to address the various types of supported DR scenarios and their related workflows. TrueNAS is a storage platform with powerful ways to ensure data integrity and consistency between local and remote sites. ZFS replication is the fastest and best way to ensure the data transferred is intact. Rsync is useful for file sync but cannot be used for live data or block-level data that could change during transfer. Cloud sync supports user workloads that archive to or from mainstream cloud providers.