Updated on 2026-10-13 GMT+08:00

Scaling up Storage of a Yearly/Monthly DB Instance

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

This historical API may not be maintained in the future. You are advised to switch workloads to the new API (Scaling up Storage of a Yearly/Monthly DB Instance).

URI format
POST https://{endpoint}/mysql/v3/{project_id}/instances/{instance_id}/volume/extend
Example
POST https://{endpoint}/mysql/v3/0483b6b16e954cb88930a360d2c4e663/instances/dsfae23fsfdsae3435in01/volume/extend

Parameter description

**Table 1** Parameter description
Name	Mandatory	Description
project_id	Yes	Project ID of a tenant in a region. To obtain this value, see Obtaining a Project ID.
instance_id	Yes	Instance ID, which is compliant with the UUID format.

**Table 2** Parameter description
Name	Mandatory	Type	Description
size	Yes	Integer	Storage space after a scale-up. The value ranges from 40 GB to 128,000 GB. The minimum increment for each scale-up is 10 GB. The selected capacity must be an integer multiple of 10.
is_auto_pay	No	String	Whether the order will be automatically paid. true: indicates the order will be automatically paid from your account. The default value is true. false: indicates the order will be manually paid.

**Table 3** Parameter description
Name	Type	Description
size	Integer	Storage space after expansion.
order_id	String	Order ID.

Example normal response

{
"size":50,
"order_id": "CS2006231950I8NQA"
}

For details, see Status Codes.

For details, see Error Codes.