Fast Failback



This article describes Datto's Fast Failback disaster recovery suite.


  • Datto SIRIS
  • USB Bare Metal Restore


The Fast Failback suite combines the Rescue Agent and Trickle BMR (Bare Metal Restore mirroring) features of your Datto appliance to provide immediate failover and reduced downtime when a disaster recovery scenario requires a Bare Metal Restore.

Rescue Agent
With the click of a button, Datto's Fast Failback system gives you the ability to create a virtual Rescue Agent from the selected snapshot of a Source Agent, and take crash-consistent backups of a disaster recovery VM. This feature creates a new backup agent on the Protect tab of the Datto appliance's GUI, and writes all of the Source Agent's configurations and data changes to automatic incremental snapshots.

Trickle BMR
To complete the Fast Failback cycle, Datto's enhanced BMR process allows you to continue working in the rescue VM, and backing up its changes, while you perform a Bare Metal Restore on the original machine (or its replacement). When the BMR finishes, subsequent backups of the live Rescue Agent 'trickle' to the destination hardware. This ensures a no-planned-downtime BMR recovery, and that, whenever you want to bring the original machine back into service, it’s ready and waiting.

Getting Started with Fast Failback

See the following workflows to create a rescue agent and perform a Bare Metal Restore:


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