Partner POV | Restoring Data While Preserving Terraform State: In-Place Recovery with Clumio Backtrack

Article written by Lawrence Chang, Chief Engineering Officer and Vir Choksi, Principal Product Marketing Manager, Commvault

IaC brings consistency, repeatability, and version control to cloud environments. Terraform becomes the source of truth for what exists, how it is configured, and how it should behave. Recovery introduces a new challenge.

Traditional restore operations often create new resources – new S3 buckets, new DynamoDB tables, new endpoints. From Terraform's perspective, those resources were not defined in code. They do not exist in state.

That creates drift. In routine operations, drift is manageable. During an incident, it compounds. This is where recovery design matters as much as backup design.

The IaC Drift Problem

In a typical restore model:

• A protected resource is restored as a new resource.
• The original resource remains in a corrupted, overwritten, or failed state.
• Terraform state does not recognize the new resource.
• Teams must manually import resources into state.
• Application configurations may need updates.

For platform teams managing production infrastructure through Terraform, this introduces friction at exactly the wrong moment. The challenge isn't backup reliability itself, but how restore workflows integrate with infrastructure-as-code practices.

Introducing In-Place Recovery with Clumio Backtrack

Clumio Backtrack is a recovery capability that helps restore data directly into existing AWS resources rather than provisioning replacement infrastructure. When configured through the Clumio Terraform provider, Backtrack helps enable recovery workflows that align with infrastructure defined in code.

Clumio Backtrack supports both Amazon S3 and Amazon DynamoDB. For a deeper technical look at DynamoDB-specific recovery workflows, see our blog post about Clumio Backtrack for DynamoDB.

Instead of provisioning replacement resources, Backtrack helps restore:

• S3 objects directly into the original bucket.
• DynamoDB data directly into the original table.

From Terraform's perspective, the infrastructure is intended to remain unchanged, with defined resources continuing to match the declared configuration. This helps reduce the need for manual resource imports, temporary restore tables, endpoint rewiring, and state reconciliation under pressure.

A Practical Example

Consider a production environment managed entirely through Terraform. A DynamoDB table tracks inventory; an S3 bucket stores application assets; identity and access management roles and policies are codified; and protection policies are defined via Terraform. If corruption occurs before a major traffic event, traditional restore approaches may create new resources that must be integrated back into Terraform.

With Backtrack, recovery is designed to occur within the existing resource boundary, helping keep the defined infrastructure intact and preserving resource identity. This approach is intended to eliminate the need to update Terraform to accommodate a newly created bucket or table, treating recovery as a data-layer operation rather than an infrastructure replacement exercise.

Why This Matters for Platform Teams

For teams committed to IaC, recovery workflows should preserve resource identity, state alignment, configuration integrity, and operational predictability. In-place restoration helps support those goals by limiting infrastructure changes during recovery events.

Recovery at Cloud Scale

Backtrack is designed to operate at cloud scale – whether restoring a small number of objects or large datasets. Recovery performance varies based on workload size and environment configuration, but the architectural objective remains consistent: restore data without introducing new infrastructure drift.

For Terraform-driven environments, that distinction matters.

Where This Approach Fits

In-place recovery is particularly relevant for:

• High-throughput DynamoDB workloads
• S3 buckets with large object counts
• Production systems managed entirely through Terraform
• Complex environments where redirecting application dependencies to new resources is difficult

When infrastructure is defined declaratively, recovery workflows should align with that same discipline.

Defining protection as code is only part of the story. Designing recovery workflows that preserve infrastructure integrity completes the model.