A new kind of a file system which seems to have been written from scratch.It is a pooled storage model that and volumes are no longer needed. Thousands of file systems can draw from a common storage pool, each one consuming only as much space as it actually needs.Every block is checksummed an even silent data corruption cannot happen.If one copy is damaged, ZFS detects it and uses another copy to repair it.ZFS provides built-in compression. It reduces space usage by 2 times as compression is standard.
Room for Improvement:
While we did not experience any performance issues with ZFS , it seems it is quite possible to run into performance issues especially with NFS mounts.
Administration of ZFS is quite simple . No separate filesystem creation step is required. The mount of the filesystem is automatic and does not require vfstab maintenance. It takes away any limits posed on the file sizes that can handles on a file system.