Manage ECS resource quotas-Elastic Compute Service(ECS)-阿里云帮助中心

Quota allocation

The system dynamically adjusts your quotas based on your actual usage. Maintaining a large number of instances over time does not, by itself, require a quota increase. Only request an increase if you anticipate a significant surge in usage.

ECS-related quotas

When you manage ECS-related quotas in Quota Center, focus on quotas for the following resource types:

General quotas: These quotas limit the quantity of cloud resources, such as security groups, in your account.
- ECS Quotas by Instance Type: The maximum number of vCPUs, GPU cards, or vGPU instances of a specific ECS instance family that an Alibaba Cloud account can have in a specific region for a specific billing method.
- Elastic Compute Service: Quotas for resources such as images and security groups.
- Block Storage: Quotas for different types of cloud disks for an Alibaba Cloud account in a specific region and zone.
API rate limit: An API rate limit defines the maximum frequency of OpenAPI calls. For example, the rate limit for the RunInstances API operation is 100/60(s).
- ECS: The API rate limit for resources such as images, security groups, and Elastic Block Storage (EBS) for API version 2014-05-26.
  
  Important
  You cannot currently request increases for ECS API rate limits.
- Block Storage: The API rate limit for advanced EBS features for API version 2021-07-30.

Manage general ECS quotas

General quotas limit the quantity of cloud resources, such as security groups, in your account.

View and increase ECS instance family quotas

An ECS instance family quota is the maximum number of vCPUs, GPU cards, or vGPU instances of a specific ECS instance family that an Alibaba Cloud account can have in a specific region for a specific billing method.

Go to the General Quotas of Ecs Quotas by Instance Type page.
Select the desired region.
In the quota list, view a quota or request an increase.
- To view a quota: The value in the Quotas column is the quota limit, and the value in the Used column is the current usage.
  
  Note
  You can find a quota by its corresponding instance family. For the mapping between quota items and instance families, see vCPU quota items and GPU and vGPU quota items.
- To request a quota increase:
  1. In the Operation column, click Request.
    
    Important
    If Actions is displayed in the The number of quotas cannot be changed. column, you cannot request an increase for that quota.
  2. In the dialog box, set New Quota and Reason, and keep the default value for Notify Adjustment Results.
    Note
    
    To increase the chance of approval, specify a reasonable quota value and provide a detailed reason for your request.
    
    You will receive an SMS and email notification with the result.
  3. Click Confirm.
  4. In the left-side navigation pane, click Application Records to view the approval status of your quota increase request.
    
    A status of Approved means the quota increase was successful.

View and increase ECS quotas

ECS quotas include limits for resources such as images and security groups.

Go to the General Quotas of Elastic Compute Service page.
Select the desired region.
In the quota list, view a quota or request an increase.
- To view a quota: The value in the Quotas column is the quota limit, and the value in the Used column is the current usage.
  
  Note
  If you know the Quota ID of a quota item, you can use the Quota ID to locate the item. If you do not know the Quota ID, you can also locate the item by its quota name and description.
- To request a quota increase:
  1. In the Actions column, click Request.
    
    Important
    If Actions is displayed in the The number of quotas cannot be changed. column, you cannot request an increase for that quota.
  2. In the dialog box, set New Quota and Reason, and keep the default value for Notify Adjustment Results.
    Note
    
    To increase the chance of approval, specify a reasonable quota value and provide a detailed reason for your request.
    
    You will receive an SMS and email notification with the result.
  3. Click Confirm.
  4. In the left-side navigation pane, click Application Records to view the approval status of your quota increase request.
    
    A status of Approved means the quota increase was successful.

View and increase EBS quotas

Elastic Block Storage (EBS) quotas limit different types of cloud disks for an Alibaba Cloud account in a specific region and zone.

Go to the General Quotas of Elastic Block Storage page.
Select the desired region and zone.
In the quota list, view a quota or request an increase.
- To view a quota: The value in the Quotas column is the quota limit, and the value in the Used column is the current usage.
  
  Note
  If you know the Quota ID of a quota item, you can use the Quota ID to locate the item. If you do not know the Quota ID, you can also locate the item by its name and description.
- To request a quota increase:
  1. In the Actions column, click Request.
    
    Important
    If Actions is displayed in the The number of quotas cannot be changed. column, you cannot request an increase for that quota.
  2. In the dialog box, set New Quota and Reason, and keep the default value for Notify Adjustment Results.
    Note
    
    To increase the chance of approval, specify a reasonable quota value and provide a detailed reason for your request.
    
    You will receive an SMS and email notification with the result.
  3. Click Confirm.
  4. In the left-side navigation pane, click Application Records to view the approval status of your quota increase request.
    
    A status of Approved means the quota increase was successful.

Manage ECS API rate limits

An API rate limit defines the maximum frequency of OpenAPI calls. For example, the rate limit for the RunInstances API operation is 100/60(s).

View ECS API rate limits

ECS API rate limits apply to API version 2014-05-26 for resources such as images, security groups, and Elastic Block Storage (EBS). You cannot currently request increases for ECS API rate limits.

Go to the API Rate Limits of Elastic Compute Service page.
Select the desired region.
In the quota list, the value in the Quotas column is the rate limit for the API.

Note
You can find a quota by its API Name to view its rate limit.

View and increase EBS API rate limits

This section describes the API rate limits for advanced Elastic Block Storage (EBS) features for API version 2021-07-30.

Go to the API Rate Limits of Elastic Block Storage page.
Select the desired region.
In the quota list, view a rate limit or request an increase.
- To view a rate limit: The value in the Quotas column is the rate limit for the API.
  
  Note
  You can find a quota by its API Name to view its rate limit.
- To request a rate limit increase:
  1. In the Actions column, click Request.
    
    Important
    If Actions is displayed in the The number of quotas cannot be changed. column, you cannot request an increase for that rate limit.
  2. In the dialog box, set New Quota and Reason, and keep the default value for Notify Adjustment Results.
    Note
    
    To increase the chance of approval, specify a reasonable quota value and provide a detailed reason for your request.
    
    You will receive an SMS and email notification with the result.
  3. Click Confirm.
  4. In the left-side navigation pane, click Application Records to view the approval status of your rate limit increase request.
    
    A status of Approved means the rate limit increase is successful.

References

Call the DescribeAccountAttributes operation to query the quotas for resources that you can create in a specific region. These quotas include the number of security groups, elastic network interfaces (ENIs), vCPUs for pay-as-you-go and spot instances, total capacity for pay-as-you-go cloud disks, the number of dedicated hosts, available network types, and whether your Alibaba Cloud account has completed real-name verification.
Quota Alerts: Set a quota alert. You will be notified when your usage reaches a preset threshold, which allows you to proactively request a quota increase.
Query applications and view application details: After submitting a request, you can track its approval status and view details by querying your applications.
For more quota-related operations, see the Quota Center documentation.