OpenZFS is an open-source implementation of the ZFS and volume manager initially developed by Sun Microsystems for the Solaris operating system and now maintained by the OpenZFS Project. It supports features like data compression, data deduplication, copy-on-write clones, snapshots, and RAID-Z. It also supports the creation of virtual devices, which allows for the creation of s that span multiple disks. One of the unique features of OpenZFS is its self-healing capabilities. The file system can detect and correct errors on the fly, without the need for a dedicated file system checker. This feature makes it an excellent choice for mission-critical applications that require high availability. OpenZFS is widely used in enterprise and data center environments, as well as in consumer devices like network-attached storage (NAS) devices. It is available for many operating systems, including Linux, FreeBSD, macOS, and Windows (through third-party solutions). OpenZFS is licensed under the CDDL (Common Development and Distribution License), which allows for both open-source and commercial use. Founding members of OpenZFS include Matt Ahrens, one of the main architects of ZFS. , OpenZFS (on some platforms such as FreeBSD) is gradually being pivoted to be based upon ZFS on Linux, which has developed faster than other variants of OpenZFS and contains new features not yet ported to those other versions. The merged code-base will include a number of new features, performance enhancements, and is proposed to be known as OpenZFS 2.0. History and implementations of ZFS The ZFS file system was originally developed by Sun Microsystems for the Solaris operating system. The ZFS source code was released in 2005 under the Common Development and Distribution License (CDDL) as part of the OpenSolaris operating system, and it was later ported to other operating systems and environments. The following is a list of key events to the development of ZFS and its various implementations, leading to the creation of OpenZFS as an umbrella project: 2001: Closed-source development of ZFS started with two engineers at Sun Microsystems.