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FAQs on managing retention for EC2 Airgap Backups

How do I create a daily full snapshot/AMI backup of an EC2 instance with a 7-day retention period in AWS?

To create daily full snapshots of your EC2 instance with a retention of 7 days:

  1. Go to the EC2 Backup Policies section in the Druva CloudRanger console.

  2. Click Create Policy and assign a relevant policy name, and continue through the setup wizard.

  3. On the Retention tab, set the following retention settings:

    • Daily: 7 Days

    • Weekly, Monthly, Yearly: 0 (if not needed)

  4. Proceed to the Backup Type section, and select Take Snapshot of EC2 Instances/AMI backup when prompted.

✅ This setup ensures that a full snapshot is taken daily and retained for 7 days.

📘 For more information, refer to Manage Backup Policies for EC2 Airgap Backup.

How do I create a weekly full backup of an EC2 instance to Airgap cloud?

Before you begin

To get started, verify that your AWS storage account is already integrated with Druva. If not, you must first:

  • Add the AWS account via the Druva console.

  • Configure client credentials.

  • Set up appropriate storage rules.

Configure backup schedule

To configure your backup schedule:

  1. Navigate to Backup Policies and click Create Policy.

  2. Assign a relevant policy name, and continue through the setup wizard.

  3. Under the Backup Schedule Type, configure the following:

    • Backup Frequency: Weekly

    • Backup Window (Optional): Specify backup start and end time (in HH:MM format)

    • Time Zone: Select the time zone appropriate for your backup schedule

  4. Click Save & Continue.

✅ This configuration ensures that Druva performs a full weekly backup to the cloud according to your defined schedule.

📘 For more information, refer to Manage Backup Policies for EC2 Airgap Backup.

Why am I receiving the error 'Retention values are invalid, snapshot days must not be equal or greater than tiered daily amount'?

Cause: To maintain a valid tiering workflow, local snapshots must expire before the cloud recovery points.

Scenario:

This error might occur when the configured local snapshot retention is equal to or greater than the configured Daily Recovery Points retention.

Example:

  • Daily Recovery Points for: 7 days

  • Retain the local snapshot in your AWS account for: 7 days

Based on the validation logic, the local snapshot retention should typically be less than the retention specified for Daily Recovery Points.

Resolution: Local snapshot retention must be shorter than cloud recovery point retention (currently set to equal or exceed cloud retention).

The local retention (X days) must remain equal to or exceed the tiered daily retention because this would make the tiering relationship redundant and logically inconsistent. To resolve this, ensure the local snapshot retention period is less than the Daily Recovery Points retention period.

Suggested Retention:

Retain the local snapshot in your AWS account for < Daily Recovery Points for

Example:

  • Daily Recovery Points for: 14 days

  • Retain the local snapshot in your AWS account for: 7 days

✅ This configuration validates the tiering setup and secures consistent retention for cloud recovery points.

📘 For more information, see Manage Backup Policies for EC2 Airgap Backup.

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