# Adjust Backup Chain Range - UpgradeUSnapBackupRange

## Overview

Adjust Backup Chain Range






## Definition

### Public Parameters

| Parameter Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **Action**     | string  | Corresponding API command name, the current API is `UpgradeUSnapBackupRange`.                      | **Yes** |
| **PublicKey**  | string  | The user's public key can be obtained from [Console](https://console.sigcalcloud.com/uaccount/api_manage)                                             | **Yes** |
| **Signature**  | string  | User signature generated based on public key and API command, see [Signature Algorithm](/docs/api/summary/signature.md)  | **Yes** |

### Request Parameters

| Parameter Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **Region** | string | Region. See [List of Regions and Availability Zones](/docs/api/summary/regionlist) |**Yes**|
| **Zone** | string | Availability Zone. See [Availability Zone List](/docs/api/summary/regionlist) |**Yes**|
| **ProjectId** | string | Project ID. If not filled in, the default project is used, sub-accounts must be filled in. Please refer to the [GetProjectList interface](/docs/api/summary/get_project_list). |No|
| **VDiskId** | string | Disk ID |**Yes**|
| **Size** | int | Disk Size |**Yes**|
| **BackupMode** | int | The default is to open with the entry-level package, "Primer": Entry-level, "Base": Basic, "Enterprise": Enterprise, "Ultimate": Flagship, "Custom": Custom backup chain. |**Yes**|
| **SnapshotSvcId** | string | Snapshot Service ID |No|
| **Journal** | int | When BackupMode is set to Custom, settings are made based on multiples of 12 hours in seconds, such as 12, 24, 36, 48. |No|
| **Hour** | int | When BackupMode is set to Custom, it is set based on a multiple of 24 hours, such as 24, 48, 72, 96. |No|
| **Day** | int | When BackupMode is set to Custom, settings are made. It is increased in multiples based on a 5-day level, such as 5, 10, 15, 20, 25, 30."""<br /> |No|

### Response Field

| Field Name | Type | Description Information | Required |
|:---|:---|:---|:---|
| **RetCode** | int | Return status code. If it is 0, it means successful return. If it is not 0, it means failure. |**Yes**|
| **Action** | string | Operation command name. |**Yes**|
| **Message** | string | Returns an error message, providing detailed description when `RetCode` is non-zero. |No|




## Example

### Request Example
    
```
https://api.sigcalcloud.com/?Action=UpgradeUSnapBackupRange
&Region=cn-zj
&Zone=cn-zj-01
&ProjectId=Fqlinzjf
&VDiskId=DFSpnovI
&Form=2
&Journal=6
&Hour=8
&Day=5
&Size=2
&VDiskId=NORuxjEi
&VDiskId=uMNPqDmK
&VDiskId=yrYQOOyK
```

### Response Example
    
```json
{
  "Action": "UpgradeUSnapBackupRangeResponse",
  "RetCode": 0
}
```