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Synology Snapshot Replication

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description Synology Snapshot Replication Overview

Synology Snapshot Replication is a backup solution designed for Network Attached Storage (NAS) devices. It creates consistent snapshots of files and folders, allowing users to quickly restore data or replicate it to another Synology NAS. This functionality provides a reliable method for disaster recovery and simplifies file relocation across a Synology network. It’s suitable for individuals and businesses needing secure data protection and business continuity.

help Synology Snapshot Replication FAQ

Does Synology Snapshot Replication require the Btrfs file system to function?

Yes, Synology Snapshot Replication relies on the Btrfs file system's copy-on-write technology to create near-instantaneous point-in-time snapshots. Volumes formatted with ext4 do not support snapshot functionality, so ensuring your Synology NAS volumes are Btrfs-formatted is a prerequisite.

How much additional storage do Synology snapshots consume on my NAS?

Synology snapshots use copy-on-write technology, meaning they only record the changed blocks of data rather than duplicating entire files. This makes them highly storage-efficient, with each snapshot typically consuming a small fraction of the original volume size, especially when changes between snapshots are minimal.

Can I replicate snapshots between two different Synology NAS models using Snapshot Replication?

Yes, Synology Snapshot Replication supports replicating snapshots between different Synology NAS models as long as both devices support Btrfs and have the Snapshot Replication package installed. The source and destination NAS must also be running compatible DSM versions for replication to function properly.

Does Synology Snapshot Replication support automated failover if my primary NAS fails?

Yes, Synology Snapshot Replication includes a failover feature that allows the destination NAS to take over as the active server when the primary NAS becomes unavailable. Once the primary device is repaired or replaced, a failback operation can restore normal operations to the original source.

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