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    PolarDB:ModifyDBClusterStoragePerformance

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    PolarDB:ModifyDBClusterStoragePerformance

    Last Updated:Sep 01, 2026

    Modifies the storage performance of a PolarDB for MySQL cluster.

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    RAM authorization

    The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

    • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

    • API: The API that you can call to perform the action.

    • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

    • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

      • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

      • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

    • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

    • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

    Action

    Access level

    Resource type

    Condition key

    Dependent action

    polardb:ModifyDBClusterStoragePerformance

    update

    *DBCluster

    acs:polardb:{#regionId}:{#accountId}:dbcluster/{#DbClusterId}

    		 None None

    Request parameters

    Parameter

    Type

    Required

    Description

    Example
    DBClusterId

    string

    Yes

    The cluster ID.

    pc-*************
    ClientToken

    string

    No

    The client token that is used to ensure the idempotence of the request. You can use the client to generate the token, but you must make sure that the token is unique among different requests. The token is case-sensitive and can contain only ASCII characters. The token can be up to 64 characters in length.

    6000170000591aed949d0f******************
    ProvisionedIops

    integer

    No

    2500
    StorageType

    string

    No

    The target storage type. Valid values for PolarDB Enterprise Edition:

    • PSL5

    • PSL4

    Valid values for PolarDB for MySQL Standard Edition:

    • ESSDPL0

    • ESSDPL1

    • ESSDPL2

    • ESSDPL3

    • ESSDAUTOPL

    ESSDAUTOPL
    BurstingEnabled

    string

    No

    Specifies whether to enable I/O performance burst for the ESSD AutoPL cloud disk. Valid values:

    • true: enabled.

    • false: disabled (default).

    Note

    This parameter is supported only when StorageType is set to ESSDAUTOPL.

    false
    ModifyType

    string

    No

    The type of the specification change. Valid values:

    • Upgrade: upgrades the specifications.

    • Downgrade: downgrades the specifications.

    Upgrade
    AutoUseCoupon

    boolean

    No

    Specifies whether to automatically use coupons. Valid values:

    • true (default): uses coupons.

    • false: does not use coupons.

    PromotionCode

    string

    No

    The coupon code. If this parameter is not specified, the default coupon is used.

    727xxxxxx934

    Response elements

    Element

    Type

    Description

    Example

    object

    DBClusterId

    string

    The cluster ID.

    pc-************

    OrderId

    string

    The order ID.

    2035629******
    RequestId

    string

    The request ID.

    E56531A4-E552-40BA-9C58-137B80******

    Examples

    Success response

    JSON format

    {
  "DBClusterId": "pc-************\t\n",
  "OrderId": "2035629******",
  "RequestId": "E56531A4-E552-40BA-9C58-137B80******"
}

    Error codes

    HTTP status code

    Error code

    Error message

    Description
    400 InvalidTaskOperation There is a cooling period after the storage performance is successfully modified.
    403 OperationDenied.ClusterCategory The operation is not permitted due to cluster category. This series is not supported by the cluster.
    404 InvalidParameterValue.Limit Provisioned IOPS must less than %s, current is %s.

    See Error Codes for a complete list.

    Release notes

    See Release Notes for a complete list.