ZFS

ZFS is a file system developed by Sun Microsystems. Some claims to fame are:
  • 128-bit File System
  • Pooled Storage Model
  • Copy-on-Write Transactions
  • RAID-Z
  • Disk Scrubbing
  • Pipelined I/O Engine
  • Constant-time Snapshots and Clones
  • Compression
  • Data Corruption Protection
  • Hot Spare
Some limitation of ZFS are:
  • Not a native cluster, distributed, or parallel file system
  • Doesn't support split mirror
  • Cannot install a boot ZFS root file system
  • Doesn't support user or group quotas