The Zettabyte File System

ZFS Admin

Overview of the Zettabyte File System (ZFS)

  • ZFS first appeared in 2005 ported with OpenSolaris; Linux implementation appeared in 2010.
  • Physical disks are aggregated and/or organized as "zpools" that can be configured and exported as mount points.
  • Similar to "volumes" in traditional filesystems.


  • High reliability owing to a configurable software RAID.
  • Large Capacity: can support up to 1M Petabytes (or 1B T)
  • Fast Reads due to COW (Copy on Write)


  • Non-parallel: Writes relatively slow
  • Does not support all Linux system calls,
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