---
title: "attachBlockStorageInstance"
slug: "cli-server-attachblockstorageinstance"
tags: ["Server", "Block Storage"]
updated: 2026-09-17T10:08:35Z
published: 2026-09-17T10:08:35Z
canonical: "cli.ncloud-docs.com/cli-server-attachblockstorageinstance"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://cli.ncloud-docs.com/llms.txt
> Use this file to discover all available pages before exploring further.

# attachBlockStorageInstance

## Overview

Assigning a block storage instance

## Description

This assigns a block storage instance to the server instance.

## Request Parameters

| Parameter Name | Requiredness | Type | Limitation | Description |
| --- | --- | --- | --- | --- |
| blockStorageInstanceNo | Yes | String |  | Block storage instance number - This determines the block storage instance number to be assigned to the server instance. - blockStorageInstanceNo can be obtained through the getBlockStorageInstanceList action. |
| serverInstanceNo | Yes | String |  | Server instance number - This determines the server instance in which a block storage will be assigned. - serverInstanceNo can be obtained through the getServerInstanceList action. |

## Response Data Type

- BlockStorageInstanceList type

| BlockStorageInstanceList extends CommonResponse |
| --- |
| private Integer totalRows; |
| private List<blockstorageinstance data-tomark-pass=""> blockStorageInstanceList = new ArrayList<blockstorageinstance data-tomark-pass="">();</blockstorageinstance></blockstorageinstance> |

| BlockStorageInstance |
| --- |
| private String blockStorageInstanceNo; |
| private String serverInstanceNo; |
| private String serverName; |
| private CommonCode blockStorageType; |
| private String blockStorageName; |
| private Long blockStorageSize; |
| private String deviceName; |
| private String blockStorageProductCode; |
| private CommonCode blockStorageInstanceStatus; |
| private CommonCode blockStorageInstanceOperation; |
| private String blockStorageInstanceStatusName; |
| private Date createDate; |
| private String blockStorageInstanceDescription; |
| private CommonCode diskType; |
| private CommonCode diskDetailType; |
| private Integer maxIopsThroughput; |
| private Region region; |
| private Zone zone; |

## Examples

### Request

```
ncloud server attachBlockStorageInstance --blockStorageInstanceNo ***1004 --serverInstanceNo ***1003
```

### Response

```
{
  "attachBlockStorageInstanceResponse": {
    "requestId": "c8172d4a-5486-4d34-9331-dfec6a747abf",
    "returnCode": "0",
    "returnMessage": "success",
    "totalRows": 1,
    "blockStorageInstanceList": [
      {
        "blockStorageInstanceNo": "***1004",
        "serverInstanceNo": "***1003",
        "serverName": "test-***",
        "blockStorageType": {
          "code": "SVRBS",
          "codeName": "Server BS"
        },
        "blockStorageName": "test-***",
        "blockStorageSize": 53687091200,
        "deviceName": "",
        "blockStorageProductCode": "SPBSTBSTAD000006",
        "blockStorageInstanceStatus": {
          "code": "CREAT",
          "codeName": "Block storage CREATED state"
        },
        "blockStorageInstanceOperation": {
          "code": "ATTAC",
          "codeName": "Block Storage  STOP OP"
        },
        "blockStorageInstanceStatusName": "attaching",
        "createDate": "2018-10-22T16:19:51+0900",
        "blockStorageInstanceDescription": "",
        "diskType": {
          "code": "NET",
          "codeName": "Network Storage"
        },
        "diskDetailType": {
          "code": "SSD",
          "codeName": "SSD"
        },
        "maxIopsThroughput": 4000,
        "region": {
          "regionNo": "1",
          "regionCode": "KR",
          "regionName": "Korea"
        },
        "zone": {
          "zoneNo": "3",
          "zoneName": "KR-2",
          "zoneCode": "KR-2",
          "zoneDescription": "평촌 zone",
          "regionNo": "1"
        }
      }
    ]
  }
}
```

```
<?xml version="1.0" encoding="UTF-8" ?>
<attachBlockStorageInstanceResponse>
  <requestId>c8172d4a-5486-4d34-9331-dfec6a747abf</requestId>
  <returnCode>0</returnCode>
  <returnMessage>success</returnMessage>
  <totalRows>1</totalRows>
  <blockStorageInstanceList>
    <blockStorageInstance>
      <blockStorageInstanceNo>***1004</blockStorageInstanceNo>
      <serverInstanceNo>***1003</serverInstanceNo>
      <serverName>test-***</serverName>
      <blockStorageType>
        <code>SVRBS</code>
        <codeName>Server BS</codeName>
      </blockStorageType>
      <blockStorageName>test-***</blockStorageName>
      <blockStorageSize>53687091200</blockStorageSize>
      <deviceName></deviceName>
      <blockStorageProductCode>SPBSTBSTAD000006</blockStorageProductCode>
      <blockStorageInstanceStatus>
        <code>CREAT</code>
        <codeName>Block storage CREATED state</codeName>
      </blockStorageInstanceStatus>
      <blockStorageInstanceOperation>
        <code>ATTAC</code>
        <codeName>Block Storage STOP OP</codeName>
      </blockStorageInstanceOperation>
      <blockStorageInstanceStatusName>attaching</blockStorageInstanceStatusName>
      <createDate>2018-10-22T16:19:51+0900</createDate>
      <blockStorageInstanceDescription></blockStorageInstanceDescription>
      <diskType>
        <code>NET</code>
        <codeName>Network Storage</codeName>
      </diskType>
      <diskDetailType>
        <code>SSD</code>
        <codeName>SSD</codeName>
      </diskDetailType>
      <maxIopsThroughput>4000</maxIopsThroughput>
      <region>
        <regionNo>1</regionNo>
        <regionCode>KR</regionCode>
        <regionName>Korea</regionName>
      </region>
      <zone>
        <zoneNo>3</zoneNo>
        <zoneName>KR-2</zoneName>
        <zoneCode>KR-2</zoneCode>
        <zoneDescription>평촌 zone</zoneDescription>
        <regionNo>1</regionNo>
      </zone>
    </blockStorageInstance>
  </blockStorageInstanceList>
</attachBlockStorageInstanceResponse>
```