# AttachDisks

## 1. API Description

This API (AttachDisks) is used to attach disks to instance.

{% hint style="info" %} <mark style="color:blue;">**Note**</mark>

* <mark style="color:blue;">A maximum of 10 disks can be attached to an instance in one request.</mark>
* <mark style="color:blue;">Quantity of attached disks cannot exceed available disk numbers of an instance. See quota limit for details.</mark>
* <mark style="color:blue;">The disk and the instance to which you want to attach the disk reside in the same availability zone.</mark>
* <mark style="color:blue;">You can only attach disks to the available instance. Please note that status of</mark> <mark style="color:blue;">**DEPLOYING**</mark> <mark style="color:blue;">or</mark> <mark style="color:blue;">**PENDING**</mark> <mark style="color:blue;">is not available.</mark>
* <mark style="color:blue;">Disks must be detachable.</mark>
  {% endhint %}

## 2. Input Parameters

The following request parameter list only provides API request parameters.

| Parameter Name | Required | Type            | Description                                           |
| -------------- | -------- | --------------- | ----------------------------------------------------- |
| diskIds        | Yes      | Array of String | ID list of disks.                                     |
| instanceId     | Yes      | String          | ID of the instance to which the disks to be attached. |

## 3. Output Parameters

| Parameter Name | Type   | Description                                                                                                           |
| -------------- | ------ | --------------------------------------------------------------------------------------------------------------------- |
| requestId      | String | <p>The unique request ID, which is returned for each request.</p><p>RequestId is required for locating a problem.</p> |

## 4. Code Example

{% tabs %}
{% tab title="Example" %}
**Attach disks to an instance.**

```json
POST /api/v2/zec HTTP/1.1
Host: console.zenlayer.com
Content-Type: application/json
X-ZC-Action: AttachDisks
<Common Request Params>

Request:
{
  "diskIds": [
    "your-disk-id"
  ],
  "instanceId": "your-instance-id"
}

Response:
{
  "requestId": "T425ED37F-1BE5-4274-B068-9A58C51F21A8",
  "response": {
    "requestId": "T425ED37F-1BE5-4274-B068-9A58C51F21A8"
  }
}
```

{% endtab %}
{% endtabs %}

## 5. Developer Resources

Zenlayer Cloud API 2.0 integrates [SDKs](/api-reference/api-introduction/toolkit/api-sdk.md)，to make it easier for you to call APIs. More programming languages will be supported.

## 6. Error Codes

The following only lists the error codes related to the API business logic. For other error codes, see [Common Error Codes](/api-reference/api-introduction/instruction/commonerrorcode.md).

| HTTP Status Code | Error Code                                     | Description                                                                                                 |
| ---------------- | ---------------------------------------------- | ----------------------------------------------------------------------------------------------------------- |
| 400              | INVALID\_DISK\_AND\_INSTANCE\_ZONE\_MISMATCHED | The disk and the instance to which you want to attach the disk should reside in the same availability zone. |
| 404              | INVALID\_DISK\_NOT\_FOUND                      | Disk does not exist.                                                                                        |
| 400              | INVALID\_DISK\_NOT\_PORTABLE                   | Disk is not detachable.                                                                                     |
| 400              | LIMIT\_EXCEEDED\_INSTANCE\_CAN\_ATTACH         | Quantity of attached disks exceed available disk numbers of an instance.                                    |
| 400              | UNSUPPORTED\_OPERATION\_DISK\_ATTACHED         | The current disk is already attached to other instance.                                                     |
| 400              | UNSUPPORTED\_OPERATION\_DISK\_STATUS           | Operations on the disk with current status are not supported.                                               |
| 400              | UNSUPPORTED\_OPERATION\_INSTANCE\_STATUS       | Operations on instances in current state are not supported.                                                 |


---

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