ZFS Features

1. Supports storage space of upto 256 quadrillion zettabytes (Terabytes - Petabytes - Exabytes - Zettabytes(1024 Exabytes))
2. Supports RAID-0/1 & RAID-Z(which is nothing but RAID-5 with enhancements. Best part is you dont need 3 disks to achieve RAID-5 on ZFS, even with 2 virtual devices, ZFS provides and good amount of redundancy.)
3. Support File System Snapshots (read-only copies of file systems or volumes.)
4. Supports creation of volumes (which can contain disks, partitions, files)
5. Uses storage pools to manage storage - aggregates virtual devices
6. ZFS File system attached to storage pool can grow dynamically as storage is added. No need to reformat or backup your data before you add any extra storage.
7. File systems may span multiple physical disks without any extra software or even efforts.
8. ZFS is transactional so its all or nothing. If a write / read operation fails for some reason, the entire transaction is rolled back.
9. Pools & file systems are auto-mounted. No need to maintain /etc/vfstab (automatically handled through XML Files.)
10. Supports file system hierarchies: /storage1/{home(50GB),var(100GB),etc.}
11. Supports reservation of storage: /storage1/{home(50GB),var}
12. Solaris 10, provides a secure web-based ZFS management tool @ https://localhost:6789/zfs