Create a managed instance group (MIG) that preserves disks for all VMs in the group.

## Explore further


For detailed documentation that includes this code sample, see the following:

- [Create a MIG with stateful disks](https://docs.cloud.google.com/compute/docs/instance-groups/create-mig-with-basic-stateful-disks)

## Code sample

### Terraform


To learn how to apply or remove a Terraform configuration, see
[Basic Terraform commands](https://docs.cloud.google.com/docs/terraform/basic-commands).


For more information, see the
[Terraform provider reference documentation](https://registry.terraform.io/providers/hashicorp/google/latest/docs).

    resource "google_compute_instance_group_manager" "default" {
      name               = "igm-stateful-disk-basic"
      zone               = "us-central1-f"
      base_instance_name = "instance"
      target_size        = 1

      version {
        instance_template = google_compute_instance_template.default.id
      }

      stateful_disk {
        device_name = "example-disk"
        delete_rule = "NEVER"
      }

    }

## What's next


To search and filter code samples for other Google Cloud products, see the
[Google Cloud sample browser](https://docs.cloud.google.com/docs/samples?product=computeengine).