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I did not understand what is ZFS - could anyone be so kind to explain?

• voxadam 3y ago
  ZFS is an advanced file system with integrated multi-device volume management. It was originally designed and implemented by Sun Microsystems for their Unix operating system Solaris. The copyright for the original codebase is now owned by Oracle and has since been closed up and made proprietary software. Prior to Oracle's acquisition of Sun, ZFS was made open source under the CDDL as part of OpenSolaris, that code was forked and it gave rise to OpenZFS which is used by many Linux and BSD users. https://en.wikipedia.org/wiki/ZFS https://en.wikipedia.org/wiki/ZFS https://openzfs.org https://openzfs.org
• chasil 3y ago
  Here are a couple of introductions. https://news.ycombinator.com/item?id=25157491 https://news.ycombinator.com/item?id=25157491 https://www.linuxjournal.com/content/zfs-linux https://www.linuxjournal.com/content/zfs-linux
• ilyt 3y ago
  It's like someone glued together LVM and RAID but on file level instead of block level. So you can make some fancy things like (relatively) cost-free snapshots, and some extra data safety with per-file checksumming. It also uses WAL (similarly to databases) which allows (similiar to databases) replication to remote system.
  • edmundsauto 3y ago
    Got it, that makes sense! Not OP but a followup - what does "replication" mean in this context? Is it mirroring your ZFS volumes in another device?
    • ilyt 3y ago
      Pretty much, although it's one-directional transfer of a volume or snapshot of one, not bi-directional one