> This page is for Data Protection. > For clean Markdown of any page, append .md to the page URL. > For a complete documentation index, see https://docs.eon.io/llms.txt. > For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.eon.io/_mcp/server. # About Restore Templates With a restore template, restoring a resource comes down to picking a snapshot. The template saves your restore choices ahead of time, such as network settings you know work, so you don't spend time on each setting during a restore or restore again after choosing the wrong subnet or bucket. For each resource you'd need back quickly, a template means: * **You don't need to decide restore settings during active incidents**: The template supplies the destination and every setting for the resource type. * **Settings are pre-validated**: Eon [validates the template against its destination account](/data-protection/restoring/restore-templates/about-restore-templates#template-validation), so a missing subnet or bucket is surfaced on the **Restore templates** page before the incident, not partway through a restore. * **You can restore multiple resources in one action**: A bulk restore recovers many EC2 instances and S3 buckets together using your restore templates. This article explains what a restore template saves and how Eon validates it, so you can decide which resources to prepare with one before an incident. A **restore template** is a saved set of restore settings. Each template names a destination restore account and region, plus the settings for its resource type. You can attach a template to all the resources it should restore. A resource has at most one attached template, which Eon uses by default when you restore that resource on its own or in a bulk restore. The destination must be a connected restore account. To learn how restore accounts work, see [About Restore Accounts]. You manage templates on the Restore templates page, where they're grouped under **EC2 Instance** and **S3 Bucket**. ## What a template saves Each resource type saves the settings its restore needs. The destination restore account and region apply to both types. ### EC2 instance templates | Setting | What it sets | | -------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Region** | The AWS region the instance is restored to. | | **VPC** and **Subnet** | The subnet the restored instance launches in. | | **Instance type** | The instance type of the restored instance. With **Use the source instance type** turned on, each instance is restored with the type recorded in its own snapshot instead, and the subnet's availability zone must offer that type. | | **Security groups** | One or more security groups to associate with the restored instance, in the subnet's VPC. | | **Encrypt restored instance** | The KMS key that encrypts the restored volumes: a customer-managed key, or the AWS-managed `aws/ebs` key. | | **Naming** | The name of the restored instance. Placeholders fill in a different name for each instance, as listed in [Restore Template Placeholders]. | | **Keep original tags** | Whether the restored instance keeps the tags it had when the snapshot was taken. | | **Start instance after restore** | Whether Eon starts the instance once it's restored. | ### S3 bucket templates | Setting | What it sets | | ------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | **Target region** | The AWS region of the destination bucket. | | **Target bucket ID** | An existing bucket in the destination restore account and region that receives the restored objects. | | **Prefix template** | The prefix the objects are restored under. Placeholders fill in a different prefix for each bucket, as listed in [Restore Template Placeholders]. | | **Encrypt temporary restore secrets** | A customer-managed KMS key that encrypts the temporary secrets that the restore uses. It doesn't encrypt the restored objects, which use the destination bucket's default encryption. | ## Template validation A template saves IDs from your restore account, such as a subnet or a bucket, and those resources can change or disappear after you save the template. So Eon validates the template against its destination account each time you restore from it, and each time the **Restore templates** page shows it. The page shows the result next to the template's name, as **Valid** or **Needs attention**. Check the **Restore templates** page regularly, before you need a template. | Template type | What Eon validates | | ------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | EC2 instance | * The subnet exists in the destination account and region. * Each security group exists and is in the subnet's VPC. * The instance type, or each instance's own type when the template uses the source instance type, is offered in the subnet's availability zone. * The KMS key, if set, is in the destination account and region and can encrypt the restored volumes. | | S3 bucket | - The bucket name is valid. - The bucket exists in the destination account. - The bucket's region matches the template's region. - The KMS key, if set, is a customer-managed key in the destination account and region. | When validation fails, the console lists each failing setting with the reason and a suggested fix. A template that isn't valid can't start a restore. ## Additional information Restore templates: * [Manage Restore Templates] * [Restore Template Placeholders] Restoring from templates: * [Bulk Restore Resources] Restore accounts: * [About Restore Accounts] [About Restore Accounts]: /data-protection/restoring/restore-accounts/about-restore-accounts [Manage Restore Templates]: /data-protection/restoring/restore-templates/manage-restore-templates [Bulk Restore Resources]: /data-protection/restoring/bulk-restore-resources [Restore Template Placeholders]: /data-protection/restoring/restore-templates/restore-template-placeholders