ZnapZend

A ZFS backup tool that takes scheduled snapshots and sends them to local or remote pools.

FreeOpen sourceLinuxCommand line
Official websiteznapzend.org

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About ZnapZend

ZnapZend uses ZFS's built-in snapshots for consistent backups, with optional pre- and post-snapshot commands to quiet software writing to a fileset. Its configuration is stored in custom ZFS properties, so it follows datasets that are renamed or removed, and a helper tool sets and checks that configuration.

Backups are sent with ZFS send and receive over ssh, optionally through mbuffer for faster transfers, to any number of destinations or none at all. Progressive thinning removes older snapshots so backup density drops over time.

Strengths

  • Configuration stored in ZFS properties
  • Replication over ssh with optional mbuffer
  • Progressive thinning of old snapshots
  • Pre- and post-snapshot hooks

Limitations

  • Only useful on systems running ZFS
  • Command line only

Details

Pricing
FreeFree and open source.
License
Open source, license not stated
Developer
Tobias Oetiker
Platforms
Linux, Command line
How it runs
Downloadable app
Account
Not required
Works offline
Yes
Best suited for
ZFS server admins who want scheduled snapshots replicated to other pools
Last verified
Added
Provenance
Facts checked against the developer's own pages and store listings, 1 sources on file.

Alternatives to ZnapZend

Compare all

Software that can replace ZnapZend for an important use case, and what changes if you switch.

  • Sanoid

    Policy-driven ZFS snapshot management and replication tools, with syncoid for sending snapshots to other machines.

    FreeOpen sourceLinuxCommand line

    Sanoid keeps snapshot retention policy in a readable config file instead of ZFS properties, with syncoid handling incremental replication, and works on Linux and FreeBSD.

  • zrepl

    ZFS backup and replication daemon that snapshots datasets and replicates them between pools and hosts.

    FreeOpen sourceLinuxCommand line

    zrepl combines ZFS snapshots, pruning and replication in one daemon configured through a file rather than ZFS properties, with published documentation and an MIT license.

  • ZFS autobackup

    A command-line tool that snapshots ZFS filesystems and replicates them to other locations on a schedule.

    FreeOpen sourceLinuxCommand line

    ZFS autobackup selects datasets through a custom ZFS property and works as a backup, replication or snapshot tool, but lacks ZnapZend's pre- and post-snapshot hooks.

Similar software

Related functionality, not necessarily a direct replacement.

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