Updated on 2026-03-16 GMT+08:00

Scaling up Storage of a Yearly/Monthly DB Instance

This API is used to scale up the storage of a yearly/monthly DB instance. Before calling this API:

POST /v3/{project_id}/instances/{instance_id}/volume/extend

**Table 1** URI parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	Definition Project ID of a tenant in a region. To obtain this value, see Obtaining a Project ID. Constraints N/A Range The value contains 32 characters. Only letters and digits are allowed. Default Value N/A
instance_id	Yes	String	Definition Instance ID, which uniquely identifies an instance. Constraints N/A Range The value contains 36 characters with a suffix of in07. Only letters and digits are allowed. Default Value N/A

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	Definition User token. To obtain this value, call the IAM API for obtaining a user token. The value of X-Subject-Token in the response header is the token value. Constraints N/A Range N/A Default Value N/A
X-Language	No	String	Definition Request language type. Constraints N/A Range en-us zh-cn Default Value en-us

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
size	Yes	Integer	Definition Storage space after scale-up. Constraints The initial minimum storage of a yearly/monthly instance is 40 GB. The new storage must be a multiple of 10 and greater than the used storage. The maximum storage is 128,000 GB. Range The storage must be at least 50 GB during scale-up. The storage must be at least 40 GB during scale-down. Default Value N/A
is_auto_pay	No	String	Definition Whether the order will be automatically paid. Constraints N/A Range true: The order will be automatically paid. false: The order will be manually paid. Default Value true

Status code: 201

**Table 4** Response body parameters
Parameter	Type	Description
size	Integer	Definition Storage space after scale-up. Range N/A
order_id	String	Definition Order ID. Range N/A

Status code: 400

**Table 5** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Status code: 500

**Table 6** Response body parameters
Parameter	Type	Description
error_code	String	Error code.
error_msg	String	Error message.

Scaling up the storage of a yearly/monthly DB instance to 50 GB

POST https://{endpoint}/v3/054e292c9880d4992f02c0196d3ea468/instances/ba62a0b83a1b42bfab275829d86ac0fdin07/volume/extend
{
  "size" : 50
}

Status code: 201

Success.

{
  "size" : 50,
  "order_id" : "CS2001221129LVGUU"
}

For details, see Status Codes.

For details, see Error Codes.

Parent topic: Instance Management