ZFS, which signifies Z File System, is an innovative file system which provides better performance for Internet sites and online programs. One of its major advantages is the real-time checksum comparison - each and every file has a checksum, or a digital fingerprint, and ZFS compares the checksums of all files between the different hard disks functioning together within a RAID. If any file is broken for some reason on one of the hard disks, it is restored from another drive with the correct checksum. As a result, the integrity of any file located on a web server is guaranteed constantly. ZFS also works considerably quicker than other file systems, which allows backups to be produced considerably faster and without slowing down the overall performance of the entire hosting server. Also, ZFS doesn't have a restriction for the total number of files that could be stored on a server while all other file systems have some restriction that might cause issues at some point, particularly for script applications that have a huge number of files.
