---
title: "CreateMultipartUpload"
slug: "ncloudstorage-createmultipartupload"
updated: 2026-10-08T04:17:27Z
published: 2026-10-08T04:17:27Z
canonical: "api.ncloud-docs.com/ncloudstorage-createmultipartupload"
---

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

# CreateMultipartUpload

Available in Classic and VPC

Start a multipart upload to upload a large object of 5 GB or more and create an upload ID.

              Note

              

The created upload ID is used to link all parts of a specific multipart upload when combining them.

## Request

This section describes the request format. The method and URI are as follows:

| Method | URI |
| --- | --- |
| POST | /{Key} |

### Request headers

The following describes the request headers:

              Note

              

For information about the request headers common to all Ncloud Storage APIs, see [Ncloud Storage request headers](/docs/en/storage-ncloudstorage#%EC%9A%94%EC%B2%AD%ED%97%A4%EB%8D%94).

| Field | Required | Description |
| --- | --- | --- |
| `Cache-Control` | Optional | Caching behavior |
| `Content-Disposition` | Optional | Display format of requested data |
| `Content-Encoding` | Optional | Encoding format of requested data |
| `Content-Language` | Optional | Request data language |
| `Content-Type` | Optional | Request data format |
| `x-amz-storage-class` | Optional | Storage class - `STANDARD` (default) \| `ONEZONE_IA` \| `DEEP_ARCHIVE` - `STANDARD`: Standard Class - `ONEZONE_IA`: One Zone-IA (Infrequent Access) Class - `DEEP_ARCHIVE`: Archive Class |
| `x-amz-server-side-encryption` | Optional | Server-side encryption method - `AES256`: SSE-S3 (server-managed key) - `aws:kms`: SSE-KMS (KMS-managed key) |
| `x-amz-server-side-encryption-customer-algorithm` | Optional | User encryption algorithm (AES256) |
| `x-amz-server-side-encryption-customer-key` | Optional | User-provided encryption key |
| `x-amz-server-side-encryption-customer-key-MD5` | Optional | User-provided encryption key's MD5 value |
| `x-amz-object-lock-mode` | Optional | Object retention mode - `GOVERNANCE` \| `COMPLIANCE` - `GOVERNANCE`: Can be bypassed with special permissions. - `COMPLIANCE`: No one can bypass it. - Specify with `x-amz-object-lock-retain-until-date`. - Available only in buckets with object lock enabled. |
| `x-amz-object-lock-retain-until-date` | Optional | Object retention expiration date - ISO 8601 format. - Specify with `x-amz-object-lock-mode`. - Available only in buckets with object lock enabled. |
| `x-amz-object-lock-legal-hold` | Optional | Legal hold status - `ON` \| `OFF` - Available only in buckets with object lock enabled |

### Request path parameters

You can use the following path parameters with your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `Key` | String | Required | Object name - When saving to a folder within the bucket, enter in the format of `{folder name}/{file name}`. |

### Request query parameters

You can use the following query parameters with your request:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `uploads` | String | Required | Request to start multipart upload. - Enter only keys without values. |

### Request example

The request example is as follows:

```
POST /object.xlsx?uploads HTTP/1.1
Host: bucket.kr.ncloudstorage.com
x-amz-storage-class: DEEP_ARCHIVE
```

## Response

This section describes the response format.

### Response headers

For information about the request headers common to all Ncloud Storage APIs, see [Ncloud Storage response headers](/docs/en/storage-ncloudstorage#%EC%9D%91%EB%8B%B5%ED%97%A4%EB%8D%94).

### Response body

The response body includes the following data:

| Field | Type | Required | Description |
| --- | --- | --- | --- |
| `InitiateMultipartUploadResult` | Object | - | Multipart upload start result |
| `InitiateMultipartUploadResult.Bucket` | String | - | Bucket name |
| `InitiateMultipartUploadResult.Key` | String | - | Object name |
| `InitiateMultipartUploadResult.UploadId` | String | - | Multipart upload ID - Save this for use in later API calls. |

### Response status codes

For information about the response status codes common to all Ncloud Storage APIs, see [Common Ncloud Storage response status codes](/docs/en/storage-ncloudstorage#%EC%9D%91%EB%8B%B5%EC%83%81%ED%83%9C%EC%BD%94%EB%93%9C).

### Response example

The response example is as follows:

```
HTTP/1.1 200 OK

<?xml version="1.0" encoding="UTF-8"?>
<InitiateMultipartUploadResult>
    <Bucket>bucket</Bucket>
    <Key>object.xlsx</Key>
    <UploadId>7880da58-****-****-****-9cc2c468d0e9</UploadId>
</InitiateMultipartUploadResult>
```