With the news today UK GDP has apparently been measurably decreased by the well publicised JLR hack of their computer system, here is a simple air-gapped archiving / backup system which can easily be implemented on multi-TB sized systems. We have great tools available – we just need to use them!

  • Data consistency ensured by O/S level snapshots
  • One way data movement through zfs send or btrfs send
  • Reasonable demand on the physically movable media through incremental send
  • Space efficiency on the archiving side through de-duplicated, compressed, archiving system
  • Disposable SD cards can be used for true “data diode” operation
  • Possible to further physically separate the server and the writer of the SD card

architecture