Help Center> Relational Database Service> API Reference> API v3 (Recommended)> DB Instance Management> Scaling Up Storage Space of a DB Instance
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Scaling Up Storage Space of a DB Instance

Function

This API is used to scale up storage space of a DB instance.

Constraints

  • The sizes of the primary and standby DB instances are the same. When you scale the primary DB instance, its standby DB instance is also scaled.
  • The DB instances can be scaled when they are in the Available state.

URI

  • URI format

    POST https://{Endpoint}/v3/{project_id}/instances/{instance_id}/action

  • Example

    https://rds.cn-north-1.myhuaweicloud.com/v3/0483b6b16e954cb88930a360d2c4e663/instances/dsfae23fsfdsae3435in01/action

  • Parameter description
    Table 1 Parameter description

    Name

    Mandatory

    Description

    project_id

    Yes

    Specifies the project ID of a tenant in a region.

    For details about how to obtain the project ID, see Obtaining a Project ID.

    instance_id

    Yes

    Specifies the DB instance ID.

Request

  • Parameter description
    Table 2 Parameter description

    Name

    Mandatory

    Type

    Description

    enlarge_volume

    Yes

    Object

    Specifies the target storage space after scaling up.

    For details, see Table 3.
    Table 3 enlarge_volume field data structure description

    Name

    Mandatory

    Type

    Description

    size

    Yes

    Integer

    The minimum start value of each scaling is 10 GB. A DB instance can be scaled up only by a multiple of 10 GB. Value range: 40 GB to 4000 GB

    • MySQL supports storage space from 11 GB to 10,000 GB. You can contact customer service to apply for the permission.
    • PostgreSQL supports storage space from 40 GB to 15,000 GB. You can contact customer service to apply for the permission.

    is_auto_pay

    No

    Boolean

    Specifies whether the order will be automatically paid when the storage space of yearly/monthly DB instances is scaled.

    • true: indicates the order will be automatically paid.
    • false: indicates the order will be manually paid. The default value is false.
  • Request example 
    {
	"enlarge_volume": {
		"size": 400,
                "is_auto_pay": true
	}
}

Response

  • Pay-per-use
    • Normal response
      Table 4 Parameter description

      Name

      Type

      Description

      job_id

      String

      Indicates the task ID.
    • Example normal response 
      {
	"job_id": "2b414788a6004883a02390e2eb0ea227"
}
    • Abnormal response

      For details, see Abnormal Request Results.

  • Yearly/Monthly
    • Normal response
      Table 5 Parameter description

      Name

      Type

      Description

      order_id

      String

      Indicates the order ID.
    • Example normal response 
      {
	"order_id": "CS2009151216NO2U2"
}
    • Abnormal response

      For details, see Abnormal Request Results.

Status Code

For details, see Status Codes.

Error Code

For details, see Error Codes.

Parent topic: DB Instance Management