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VolSync

Free#22 of 32 in Kubernetes Backup Software

VolSync: A focused open-source operator for persistent-volume backup, replication, and recovery. Ranked #22 of 32 in Kubernetes Backup Software by our editors (6.9/10); pricing: Open source; best for persistent-volume replication and recovery.

6.9/10Editor score

Visit VolSync

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At a glance

Editor score
6.9 / 10
Pricing
Open source
Best for
Persistent-volume replication and recovery
Paid from
Free
Application consistency
Crash-consistent
Facts checked
20 Sep 2026

Where it wins
- Supports Restic backups, rsync replication, and cloud replication via Rclone
- Offers cross-cluster PV replication with scheduled or continuous triggers
- Provides custom retention and point-in-time PVC recovery options
Where it doesn't
- Application consistency is documented as crash-consistent
- Some functionality requires Kubernetes storage and snapshot components
- Cross-cluster restore verification is not provided

Our verdict on VolSync

VolSync is an open-source Kubernetes operator for asynchronously replicating persistent volumes within or across clusters. It is designed for storage-focused disaster recovery, migration, testing with production data, and periodic backups. Users configure ReplicationSource and ReplicationDestination resources to define backup targets, schedules, retention, and restore behavior. The self-hosted deployment is installed through Helm, making it a fit for teams that manage their own Kubernetes environments and want persistent-volume protection without a commercial subscription.

Its strongest capability is breadth within persistent-volume data movement. Restic-based backups cover PersistentVolume data, while rsync supports asynchronous replication and Rclone supports replication to intermediate cloud storage. Cross-cluster persistent-volume replication extends the design beyond a single Kubernetes cluster. Triggers can be scheduled, manual, or continuous, and retention can be configured across hourly, daily, weekly, monthly, yearly, and time-window options. Point-in-time copies use PVC clones or VolumeSnapshots, and backups can be restored into existing or provisioned PVCs. These controls suit recovery workflows that need more than a single recurring backup schedule.

The trade-off is a focused scope. VolSync addresses persistent-volume data rather than presenting a broader application-protection layer, and its documented consistency model is crash-consistent rather than application-aware. Some functions depend on Kubernetes storage and snapshot components, so the surrounding cluster configuration matters during deployment and recovery planning. Teams seeking self-hosted PV replication, custom retention, and cross-cluster movement should consider VolSync; teams that need verified cross-cluster restores or built-in application-aware consistency should look for a platform with those capabilities.

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VolSync pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on github.com

VolSync fact sheet

Free plan	Not verified
Paid from	Free
Application consistency	Crash-consistent
Persistent volume backup	Yes
Cross-cluster restore	Not verified
Backup frequency	Scheduled
Retention options	Custom
Immutable backups	Not verified
Deployment	Self-hosted
Support	Docs
Built for	Mid-market, Enterprise (editorial estimate)
Pricing	Open source
Website	github.com
Facts checked	20 Sep 2026

Alternatives to VolSync

See all VolSync alternatives →

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Featured on iTechGuides

VolSync is listed in our Kubernetes Backup Software directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update