You can call this operation to change the category of a disk or modify the performance level of an enhanced SSD (ESSD).

Description

When you call this operation, take note of the following items:

  • To modify the performance level of an ESSD, take note of the following items:
    • For a subscription ESSD, you can only upgrade its performance level.
    • For a pay-as-you-go ESSD, You can upgrade or downgrade its performance level. However, you cannot downgrade the performance level to PL0.
    • The ESSD must be in the In Use (In_Use) or Unattached (Available) state.
    • If the ESSD is attached to an ECS instance, the instance must be in the Running (Running) or Stopped (Stopped) state. The instance cannot be in the Expired state or stopped due to an overdue payment.
    • If you cannot upgrade the performance level of the ESSD due to its capacity, resize the ESSD by calling the ResizeDisk operation and then try again. For more information, see Enhanced SSDs.
  • For more information about the limits on changing the category of a disk, see the "Limits" section of the Change the category of a disk topic.

The new disk category or performance level takes effect immediately after this operation is executed. Alibaba Cloud calculates the bill based on the new disk category and performance level.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes ModifyDiskSpec

The operation that you want to perform. Set the value to ModifyDiskSpec.
DiskId String Yes d-bp131n0q38u3a4zi****

The ID of the disk.

DiskCategory String No cloud_essd

The new category of the disk. Valid values:

  • cloud_essd: ESSD
  • cloud_ssd: standard SSD
  • cloud_efficiency: ultra disk

This parameter is empty by default, which indicates that the disk category is not changed.

Note The preceding values are listed in descending order of disk performance. The disk cannot be downgraded if it is a subscription disk.
PerformanceLevel String No PL2

The new performance level of the ESSD. Valid values:

  • PL0: A single ESSD can deliver up to 10,000 random read/write IOPS.
  • PL1: A single ESSD can deliver up to 50,000 random read/write IOPS.
  • PL2: A single ESSD can deliver up to 100,000 random read/write IOPS.
  • PL3: A single ESSD can deliver up to 1,000,000 random read/write IOPS.

Default value: PL1.
DryRun Boolean No false

Specifies whether to check the validity of the request without actually making the request. Valid values:

  • true: The validity of the request is checked but the request is not made. Check items include the required parameters, request format, service limits, and available ECS resources. If the check fails, the corresponding error message is returned. If the check succeeds, the DryRunOperation error code is returned.
  • false: The validity of the request is checked. If the check succeeds, a 2xx HTTP status code is returned and the request is made.

Default value: false.

Response parameters

Parameter Type Example Description
OrderId String 20413515388****

The ID of the order.

Note This parameter is returned only when the category of a subscription disk or the performance level of a subscription ESSD is modified.
RequestId String 473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E

The ID of the request.

TaskId String t-bp67acfmxazb4p****

The task ID of changing the disk category.

Note If you only modify the performance level of an ESSD, this parameter is not returned.

Examples

Sample requests

https://ecs.aliyuncs.com/?Action=ModifyDiskSpec
&DiskId=d-bp131n0q38u3a4zi****
&PerformanceLevel=PL2
&<Common request parameters>

Sample success responses

XML format 

<ModifyDiskSpecResponse>
    <TaskId>t-bp67acfmxazb4p****</TaskId>
    <RequestId>5B38289D-88AB-42BD-B021-12FC6942F099</RequestId>
    <OrderId>20413515388****</TaskId>
</ModifyDiskSpecResponse>

JSON format 

{
  "TaskId": "t-bp67acfmxazb4p****",
  "RequestId": "5B38289D-88AB-42BD-B021-12FC6942F099",
  "OrderId": "20413515388****"
}

Error codes

HttpCode Error code Error message Description
404 InvalidDiskId.NotFound The specified disk does not exist. The error message returned because the specified disk does not exist. Check whether the disk ID is correct.
403 DiskInArrears The specified operation is denied as your disk owing fee. The error message returned because you have an overdue payment for the disk.
404 InvalidInstanceId.NotFound The specified InstanceId does not exist. The error message returned because the specified instance does not exist. Check whether the InstanceId parameter is correct.
403 InstanceExpiredOrInArrears The specified operation is denied as your prepay instance is expired (prepay mode) or in arrears (afterpay mode). The error message returned because the subscription instance has expired. Renew the instance first.
403 IncorrectDiskStatus The current disk status does not support this operation. The error message returned because the operation is not supported while the disk is in the current state. Make sure that the disk is available and you have no overdue payments for it.
403 DiskCreatingSnapshot The operation is denied due to a snapshot of the specified disk is not completed yet. The error message returned because a snapshot is being created for the specified disk.
403 OperationDenied The type of the disk does not support the operation. The error message returned because the specified disk category does not support this operation.
400 InvalidPerformanceLevel.Malformed The specified parameter PerformanceLevel is not valid. The error message returned because the specified PerformanceLevel parameter is invalid.
403 OperationDenied.PerformanceLevelNotMatch The specified PerformanceLevel and disk size do not match. The error message returned because the performance level of the ESSD cannot be upgraded due to its capacity.
400 InvalidDiskCategory.ValueNotSupported The specified parameter "DiskCategory" is not valid. The error message returned because the specified disk category is invalid.
403 InvalidInstanceType.NotSupportDiskCategory The instanceType of the specified instance does not support this disk category. The error message returned because the instance type specified by the InstanceType parameter does not support the disk category of the instance. Try another instance type. For information about the disk categories supported by instance types, see documents on instance families.
403 OperationDenied.NoStock The requested resource is sold out in the specified zone; try other types of resources or other regions and zones. The error message returned because resources are insufficient in the specified zone. Try other types of resources or select other regions and zones.

For a list of error codes, visit the API Error Center.