VolSync

5.6easy start · #27 of 30
in Kubernetes Backup Software

Free to practise onnot on record
Free trialnot on record
Well documentednot on record
Runs where you worknot on record

Runs on self-hosted.

VolSync is ranked #27 of 30 in Kubernetes backup software on The Geeks Club. It runs on Self-hosted. There is a free plan.

VolSync plans and pricing

All plans

VolSync (open-source project) Free Kubernetes operator; cluster snapshot controller required; CSI storage recommended github.com · 4 Oct 2026

Compared on Kubernetes backup software

Application consistency: crash-consistent
Persistent volume backup: Yes
Backup frequency: scheduled
Retention options: custom

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The record

What it does: VolSync is a Kubernetes operator for asynchronous replication of persistent volumes within or across clusters.
Storage independence: Its replication is independent of the storage system and can work across storage types and vendors.
Replication methods: The documented methods are Rclone, Restic, Rsync over TLS, Rsync over SSH, and Syncthing.
Backups: The Restic mover supports persistent-volume backups, with ReplicationSource defining backup policy and ReplicationDestination used for restores.
Rclone use case: Rclone supports asynchronous one-to-many replication through intermediary object storage such as AWS S3.
Rsync use case: Rsync over TLS supports one-to-one asynchronous replication for disaster recovery, test-environment mirroring, and remote processing.
Syncthing use case: Syncthing supports live, many-to-many, eventually consistent synchronization for data spread across peers.
Security: Rsync over TLS uses a TLS-protected tunnel and authenticates the connection with a shared TLS-PSK key.
Mover permissions: Mover pods run in source and destination namespaces, and their permissions affect what data they can replicate and cluster security.
Monitoring: VolSync exposes metrics for monitoring replication relationships via Prometheus.
CSI requirements: A Kubernetes snapshot controller is required; CSI storage with snapshot and clone support is recommended for some functionality.
Installation: The documentation recommends deploying VolSync through its Helm chart on Kubernetes or OpenShift.
License: The project is licensed under GNU AGPL 3.0, with API files additionally under Apache 2.0 and documentation under CC BY-SA 4.0.
Organization: The project repository is maintained under the Backube GitHub organization; the opened project pages do not state its headquarters or founding year.
Price from: Free

Where it ranks on The Geeks Club

Best Kubernetes Backup Software in 2026#27 of 30

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Sources

volsync.readthedocs.io/en/stable/· checked 4 Oct 2026
volsync.readthedocs.io/en/stable/usage/· checked 4 Oct 2026
volsync.readthedocs.io/en/stable/usage/restic/index.html· checked 4 Oct 2026
volsync.readthedocs.io/en/stable/usage/rclone/index.html· checked 4 Oct 2026
volsync.readthedocs.io/en/stable/usage/rsync-tls/index.html· checked 4 Oct 2026
volsync.readthedocs.io/en/stable/installation/index.html· checked 4 Oct 2026
github.com/backube/volsync· checked 4 Oct 2026