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Druva Documentation

Policy-Based Archival of EBS Snapshots to Amazon S3 Storage


Enterprises often need to retain long-term backup data for business continuity, compliance, customer contracts, and e-Discovery. Storage optimization is an ongoing process of evaluating your data storage needs and choosing a cost-effective AWS storage option that meets business needs. However, AWS does not currently offer an out-of-box low-cost storage tier for EBS snapshots.

You can now automatically transition your Amazon EBS snapshots to Amazon S3 storage classes such as Amazon S3 Standard, S3 Standard-IA, S3 One Zone, S3 Glacier, and S3 Glacier Deep Archive,, significantly reducing costs while retaining long-term availability.

Note: The Archive Snapshots to S3 feature is currently available only for EC2 and EBS backups.

Key Advantages

Archiving EBS snapshots to S3 offers the following benefits:

  • Cost benefits: Transitioning snapshots to lower-cost storage offers significant savings on long-term retention.
  • Ease of use: Policy-based approach to transition EBS snapshots to S3 (and other storage classes).
  • Recovery: Recovery of individual files or snapshots from S3.
  • File-level search in snapshots: Metadata-based file search to locate files from the snapshots, without having to recover snapshots in S3.

Policy-Based Archival of EBS Snapshots to S3 

You can automatically transition your Amazon EBS snapshots to Amazon S3 storage classes such as Amazon S3 Glacier and Amazon S3 Glacier Deep Archive via a backup policy.

To automatically archive your EBS snapshots to Amazon S3 storage:

  1. Log into the Druva CloudRanger console and navigate to Backup Policies.
  2. Click Create to create a new backup policy or select an existing policy to edit.

    Arch to S3.png
  3. On the Retention tab, specify the S3 archive options under Archive to S3.
    • Select the Move backups to S3 checkbox and specify the Storage Class to which the backup is to be transitioned as well as the retention period.
      For example: Move weekly, monthly, and yearly backups to Glacier after 3 weeks.
    • Select the Druva CloudRanger account and AWS region to which the backup is to be archived.
    • Click Save & Continue.
      Note: The storage class policy settings specified here will override any policy-based retention when moving a snapshot with an associated backup policy
  4. Specify the Resources and backup encryption that apply to the policy.
    Once active, the backup policy is automatically executed within the defined schedule, or you may choose to execute your policy on-demand.
Note: Once the backup is archived to S3, Druva CloudRanger deletes the original snapshot. However, any policy-based retention remains active.

For more information about available AWS storage classes, refer to the AWS documentation.

Note: The availability of this feature may be limited based on the license type, region, and other criteria. To access this feature, contact your Druva Account Manager or Support.
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