OpenZFS is an open-source storage platform. It includes the functionality of both traditional file systems and volume manager. It has many advanced features including:

• Protection against data corruption. Integrity checking for both data and metadata.
• Continuous integrity verification and automatic "self-healing" repair
• Data redundancy with mirroring, RAID-Z1/2/3 [and DRAID]
• Support for high storage capacities - up to 256 trillion yobibytes (2^128 bytes)
• Space-saving with transparent compression using LZ4, GZIP or ZSTD
• Hardware-accelerated native encryption
• Efficient storage with snapshots and copy-on-write clones
• Efficient local or remote replication - send only changed blocks with ZFS send and receive

Note: While the software is classified as free, it is actually donationware. Please consider making a donation to help support development.