How to specify S40 Storage optimized tier for search nodes in terraform

Other MongoDB Topics MongoDB Server Development
1

Hi,

How can I specify that a MongoDB Atlas cluster should have a search deployment with two nodes that are using the S40 storage optimized tier?

Here is the terraform code that I am using

resource "mongodbatlas_search_deployment" "cluster_search_deployment" {
  provider     = mongodbatlas
  count        = var.search_deployment_enabled && var.create_cluster ? 1 : 0
  project_id   = mongodbatlas_advanced_cluster.cluster[0].project_id
  cluster_name = mongodbatlas_advanced_cluster.cluster[0].name
  specs = [
    {
      instance_size = var.atlas_search_node_instance_size
      node_count    = var.atlas_search_nodes
    }
  ]
}

I have tried setting it to S40_STORAGE_OPTIMIZED and S40_STORAGEOPTIMIZED, but I am getting an error stating

│ Error: error during search deployment update
│ 
│   with module.cluster.mongodbatlas_search_deployment.cluster_search_deployment[0],
│   on .terraform/modules/cluster/main.tf line 131, in resource "mongodbatlas_search_deployment" "cluster_search_deployment":
│  131: resource "mongodbatlas_search_deployment" "cluster_search_deployment" {
│ 
│ https://cloud.mongodb.com/api/atlas/v2/groups/[redacted]/clusters/my-cluster/search/deployment
│ PATCH: HTTP 400 Bad Request (Error code: "INVALID_ENUM_VALUE") Detail: An
│ invalid enumeration value S40_STORAGE_OPTIMIZED was specified. Reason: Bad
│ Request. Params: [S40_STORAGE_OPTIMIZED], BadRequestDetail: 
╵

What is the correct value to use the S40 storage optimized tier for search nodes in terraform?