Snapshot Restore Process for Amazon EC2 Instances Including Amazon VPC Resources

When Amazon VPC protection is enabled, the snapshot restore process includes the following stages:

1. Create volumes from snapshots.

2. Check and validate the network entities such as VPC, subnet, security groups , NICs. If any entities are deleted, re-create them.

3. Attach the volumes:

   • If the instance exists, attach the new volumes to the instance.

   • If the restore is to a new instance, create a new instance with the restored network configuration and attach the EBS volumes restored.

4. Retain the snapshots until retention criteria are met.