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

> ## 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.

# changeBlockStorageVolumeSize

## Overview

Changing the volume size of block storage

## Description

Change the volume size of block storage.

## Request Parameters

| Parameter Name | Required Status | Type | Restrictions | Description |
| --- | --- | --- | --- | --- |
| blockStorageInstanceNo | Yes | String |  | The number of the block storage instance that will resize the volume The blockStorageInstanceNo can be obtained through the getBlockStorageInstanceList action. |
| blockStorageSize | Yes | Integer | Min : 10, Max : 2000 GB 10 GB unit input | Block storage size to be changed The volume size can be expanded only and the reduction feature is not available. The added volume size can only be applied when the file storage size is expanded in the server. Please refer to the User Manual [Compute > Server > Add-ons]. |

## 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 diskTypeCode; |
| private CommonCode diskType; |
| private CommonCode diskDetailType; |
| private Integer maxIopsThroughput; |

## Examples

### Request

```
ncloud server changeBlockStorageVolumeSize --blockStorageInstanceNo 1089090 --blockStorageSize 20
```

### Response

```
{
  "changeBlockStorageVolumeSizeResponse": {
    "requestId": "2fa29b38-daf8-4658-953c-4d39dfc30095",
    "returnCode": "0",
    "returnMessage": "success",
    "totalRows": 1,
    "blockStorageInstanceList": [
      {
        "blockStorageInstanceNo": "1089090",
        "serverInstanceNo": "1021003",
        "serverName": "s1669aa4e78c",
        "blockStorageType": {
          "code": "SVRBS",
          "codeName": "Server BS"
        },
        "blockStorageName": "bst167588711f2",
        "blockStorageSize": 21474836480,
        "deviceName": "",
        "blockStorageProductCode": "SPBSTBSTAD000002",
        "blockStorageInstanceStatus": {
          "code": "CREAT",
          "codeName": "Block storage CREATED state"
        },
        "blockStorageInstanceOperation": {
          "code": "CHNG",
          "codeName": "Block Storage Resize OP"
        },
        "blockStorageInstanceStatusName": "changingSpec",
        "createDate": "2018-11-28T13:15:06+0900",
        "blockStorageInstanceDescription": "",
        "diskType": {
          "code": "NET",
          "codeName": "Network Storage"
        },
        "diskDetailType": {
          "code": "SSD",
          "codeName": "SSD"
        },
        "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" ?>
<changeBlockStorageVolumeSizeResponse>
  <requestId>2fa29b38-daf8-4658-953c-4d39dfc30095</requestId>
  <returnCode>0</returnCode>
  <returnMessage>success</returnMessage>
  <totalRows>1</totalRows>
  <blockStorageInstanceList>
    <blockStorageInstance>
      <blockStorageInstanceNo>1089090</blockStorageInstanceNo>
      <serverInstanceNo>1021003</serverInstanceNo>
      <serverName>s1669aa4e78c</serverName>
      <blockStorageType>
        <code>SVRBS</code>
        <codeName>Server BS</codeName>
      </blockStorageType>
      <blockStorageName>bst167588711f2</blockStorageName>
      <blockStorageSize>21474836480</blockStorageSize>
      <deviceName></deviceName>
      <blockStorageProductCode>SPBSTBSTAD000002</blockStorageProductCode>
      <blockStorageInstanceStatus>
        <code>CREAT</code>
        <codeName>Block storage CREATED state</codeName>
      </blockStorageInstanceStatus>
      <blockStorageInstanceOperation>
        <code>CHNG</code>
        <codeName>Block Storage Resize OP</codeName>
      </blockStorageInstanceOperation>
      <blockStorageInstanceStatusName>changingSpec</blockStorageInstanceStatusName>
      <createDate>2018-11-28T13:15:06+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>
</changeBlockStorageVolumeSizeResponse>
```