ZFS is a next-generation filesystem that supports a wide range of sophisticated storage technologies, including volume management, snapshots, checksumming, compression and deduplication, replication, and others. ZFS transmits a snapshot to the secondary box via ssh while also running the ZFS receives a command to obtain it and write to the file system. Despite this method being easy and clear-cut, it would have taken several weeks to execute. Even if the network connection between the servers is adequate, the performance will not reach the desired levels. Although the ZFS SEND/RECEIVE feature does not deal with individual files but rather with data blocks, it does not send and receive data simultaneously or at the same rate. That leads to the sender or the receiver delaying the process periodically for brief periods while waiting for a counterpart.

Data, as well as metadata, are replicated. Remote replication (or simply "replication") is a general-purpose functionality, which is best suited for the following scenarios: Data transmission, disk-to-disk backup, data migration, snapshot-based, block-level, asynchronous Secure, includes metadata In mirrored and RAID-Z configurations, ZFS offers two degrees of data redundancy. Because of the znapzend software and ZFS's effectiveness at transmitting snapshots, setting up replication utilizing the ZFS SEND/RECEIVE feature proved to be a quick and easy operation. That easily allows for backup RTO and RPO to be achieved in a matter of minutes, which is sufficient for the vast majority of uses in research clusters.