How Restore to Amazon EC2 Works

The workflow of the restore process depends on whether the proxy appliance is used or not. For more information on the proxy appliance, see Proxy Appliance.

Note

Mind the following:

  • If you added the Veeam Backup for AWS appliance to the Veeam Backup & Replication infrastructure and you plan to restore Amazon EC2 instances from restore points that were created using the appliance, you do not need to configure the proxy appliance. Also, restore to Amazon EC2 works as described in the Entire EC2 Instance Restore section in the Veeam Backup for AWS User Guide.
  • During restore, Veeam Backup & Replication converts GUID partition table (GPT) disks into Master Boot Record (MBR) disks.

Restoring to Amazon EC2 with Proxy Appliance

If a proxy appliance is required or you selected to use it for restore to Amazon EC2, Veeam Backup & Replication performs the following operations:

  1. Veeam Backup & Replication creates a proxy appliance in Amazon EC2.

During the restore process, the proxy appliance communicates with backup infrastructure components over the SSH protocol and the network redirector that is deployed on the proxy appliance.

  1. For every disk of a backed-up workload, Veeam Backup & Replication creates an empty EBS volume in Amazon EC2.
  2. Veeam Backup & Replication hot-adds empty disks to the proxy appliance and restores backed-up data to the EBS volumes.
  3. [For backups of EC2 instances] Veeam Backup & Replication creates a target instance in Amazon EC2.
  4. [For backups of EC2 instances] Veeam Backup & Replication detaches the EBS volumes from the proxy appliance and attaches them to the target instance.
  5. [For backups of other workloads] Veeam Backup & Replication requests Amazon to create snapshots of the attached EBS volumes. The snapshots are created in Amazon S3.
  6. [For backups of other workloads] Veeam Backup & Replication requests Amazon to use the VM Import functionality to import a VM from EBS volume snapshots to Amazon EC2.
  7. [For backups of other workloads] After the restore process is complete, Veeam Backup & Replication removes the snapshots created in Amazon S3.
  8. Veeam Backup & Replication removes proxy appliance from Amazon EC2.

Restoring to Amazon EC2 without Proxy Appliance

If you selected not to use a proxy appliance for restore to Amazon EC2, Veeam Backup & Replication performs the following operations:

  1. Veeam Backup & Replication uploads disks of a backed-up workload to Amazon S3.

In Amazon S3, the uploaded disks are stored to the temporary bucket in the RAW format.

  1. Veeam Backup & Replication imports the backed-up data from the temporary bucket in Amazon S3 to EBS volumes in Amazon EC2.
  2. Veeam Backup & Replication creates a target instance in Amazon EC2 and attaches the EBS volumes to it.
  3. After the import process is complete, Veeam Backup & Replication removes the temporary bucket from Amazon S3.