ZFS

Zettabyte File System (ZFS) combines a file system with a volume manager designed to allow a computer system to dynamically expand as storage needs grow. The file system allows an Operating System to address data stored across multiple hard-disk and solid-state arrays. Originally designed for the Solaris Operating System by Sun Microsystems (before Sun was acquired by Oracle in 2010), it was later forked into an open source version OpenZFS, allowing it to run on Linux, Mac, and FreeBSD. Important features include redundancy (data remains preserved even when a drive fails), checksums (to maintain data integrity), dynamic expansion (the ability to add new drives on demand), dynamic rebuild (reconfigures automatically when failed hard drives are replaced), and self-healing (eliminates the need the need to run maintanence commands).