ZFS file system NAS servers

ZFS file system

— an advanced file system that uses a transactional copy-on-write model. Active data is never overwritten - ZFS places the new block in a different location on disk and updates the metadata, which allows you to write a link to the new block of information and save older versions of the data. The key features of ZFS are snapshots (immutable copies of the file system made on the fly), advanced compression algorithms, and a built-in deduplication function. ZFS is also one of the most advanced file systems in terms of security.