How do I install the Z File System (ZFS) on Ubuntu Linux 16.04 LTS server and create RAID-1 (mirror)? The Z File System (ZFS) was originally designed at Sun Microsystem. It is an advanced file system and logical volume manager. It works on Solaris, FreeBSD, Linux and many other operating systems. The features of ZFS include protection against data corruption, compression, volume management, snapshots, data integrity, Software RAID, cache and much more.