diff --git a/README.md b/README.md
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diff --git a/main.tf b/main.tf
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+resource "ncloud_block_storage" "block_storage" {
+  size                           = var.size
+  server_instance_no             = var.server_instance_no
+  name                           = var.name
+  description                    = var.description
+  disk_detail_type               = var.disk_detail_type
+  stop_instance_before_detaching = var.stop_instance_before_detaching
+}
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diff --git a/output.tf b/output.tf
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+output "id" {
+  description = "The ID of Block storage instance."
+  value       = ncloud_block_storage.block_storage.id
+}
+
+output "block_storage_no" {
+  description = "The ID of Block storage instance. (It is the same result as id)"
+  value       = ncloud_block_storage.block_storage.block_storage_no
+}
+
+output "server_name" {
+  description = "Server name."
+  value       = ncloud_block_storage.block_storage.server_name
+}
+
+output "type" {
+  description = "Block storage type code."
+  value       = ncloud_block_storage.block_storage.type
+}
+
+output "device_name" {
+  description = "Device name."
+  value       = ncloud_block_storage.block_storage.device_name
+}
+
+output "product_code" {
+  description = "Block storage product code."
+  value       = ncloud_block_storage.block_storage.product_code
+}
+
+output "status" {
+  description = "Block storage instance status code."
+  value       = ncloud_block_storage.block_storage.status
+}
+
+output "disk_type" {
+  description = "Disk type code."
+  value       = ncloud_block_storage.block_storage.disk_type
+}
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diff --git a/variables.tf b/variables.tf
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+variable "size" {
+  description = "(Required) The size of the block storage to create. It is automatically set when you take a snapshot."
+  type        = string
+}
+
+variable "server_instance_no" {
+  description = "(Required) When first created. (Optional) After creation. Server instance ID to which you want to assign the block storage."
+  type        = string
+}
+
+variable "name" {
+  description = "(Optional) The name to create. If omitted, Terraform will assign a random, unique name."
+  type        = string
+  default     = null
+}
+
+variable "description" {
+  description = "(Optional) description to create."
+  type        = string
+  default     = null
+}
+
+variable "disk_detail_type" {
+  description = "(Optional) Type of block storage disk detail to create. Default SSD. Accepted values: SSD | HDD"
+  type        = string
+  default     = "SSD"
+  validation {
+    condition     = can(regex("^(SSD|HDD)$", var.disk_detail_type))
+    error_message = "disk_detail_type must be either SSD or HDD."
+  }
+}
+
+variable "stop_instance_before_detaching" {
+  description = "(Optional, Boolean) Set this to true to ensure that the target instance is stopped before trying to detach the block storage. It stops the instance, if it is not already stopped. > If stop_instance_before_detaching is true, server will be stopped and will not start automatically. User must start server instance manually via NCLOUD console or API."
+  type        = bool
+  default     = false
+}
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