This document summarizes a presentation about the advantages of using ZFS for data replication compared to rsync. It provides several examples showing ZFS performing full dataset replications between 289x and 1,148x faster than rsync due to its use of copy-on-write snapshots and incremental block-level replication. It also briefly explains how copy-on-write snapshots and incremental replication work at a high-level in ZFS to provide such performance advantages over rsync. Additional context is provided about data services that offer ZFS-based replication for $60 or less per terabyte per month.