Manage ECS resource quotas - Elastic Compute Service - Alibaba Cloud Documentation Center

View, increase, and set alerts for ECS resource quotas and API rate limits in Quota Center.

How quotas are allocated

The system dynamically adjusts quotas based on actual usage. Only request an increase when you anticipate a significant surge in demand.

ECS-related quotas

Quota Center organizes ECS quotas into the following types:

General Quotas: Limits on cloud resources in your account, such as the maximum number of security groups.
- Ecs Quotas by Instance Type: The maximum number of vCPUs, GPU cards, or vGPU-accelerated instances per Alibaba Cloud account, specific to a region and billing method.
- ECS general quotas: Limits for resources such as images and security groups.
- Block Storage (EBS) general quotas: Limits for different types of cloud disks per Alibaba Cloud account, specific to a region and zone.
API Rate Limits: Limits on the frequency of OpenAPI calls. For example, the RunInstances rate limit could be 100/60(s).
- ECS: Rate limits for operations related to resources such as images, security groups, and block storage (API version 2014-05-26).
  
  Important
  You cannot currently request an increase for ECS API rate limits.
- Block Storage: Rate limits for advanced block storage features (API version 2021-07-30).

Manage general quotas for ECS

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

View or increase ECS instance type quotas

ECS instance type quotas limit the maximum number of vCPUs, GPU cards, or vGPU-accelerated instances per Alibaba Cloud account, specific to a region and billing method.

Go to the General Quotas of Ecs Quotas by Instance Type page.
Select the target region.
In the quota list, view or request an increase for a quota.
- To view a quota: The Quotas column shows the upper limit, and the Used column shows the current usage.
  
  Note
  Find a quota item by instance type. For mappings between quota items and instance types, see Limits and Limits.
- To request a quota increase:
  1. In the Actions column, click Request.
    
    Important
    If Unadjustable is displayed in the Actions column, the quota cannot be increased.
  2. In the dialog box, set New Quota and Reason. Keep the default value for Notify Adjustment Results.
    Note
    
    To improve approval chances, specify a reasonable quota value and provide a detailed reason.
    
    You will receive the result by SMS and email.
  3. Click Confirm.
  4. In the left-side navigation pane, click Application Records to check the approval status.
    
    A status of Approved indicates a successful increase.

View or increase ECS quotas

ECS general quotas cover resources such as images and security groups.

Go to the General Quotas of Elastic Compute Service page.
Select the target region.
In the quota list, view or request an increase for a quota.
- To view a quota: The Quotas column shows the upper limit, and the Used column shows the current usage.
  
  Note
  Find a quota item by its quota ID, or by name and description.
- To request a quota increase:
  1. In the Actions column, click Request.
    
    Important
    If Unadjustable is displayed in the Actions column, the quota cannot be increased.
  2. In the dialog box, set New Quota and Reason. Keep the default value for Notify Adjustment Results.
    Note
    
    To improve approval chances, specify a reasonable quota value and provide a detailed reason.
    
    You will receive the result by SMS and email.
  3. Click Confirm.
  4. In the left-side navigation pane, click Application Records to check the approval status.
    
    A status of Approved indicates a successful increase.

View or increase EBS quotas

EBS quotas limit the number of cloud disks of each type per Alibaba Cloud account, specific to a region and zone.

Go to the General Quotas of Elastic Block Storage page.
Select the target region and zone.
In the quota list, view or request an increase for a quota.
- To view a quota: The Quotas column shows the upper limit, and the Used column shows the current usage.
  
  Note
  Find a quota item by its quota ID, or by name and description.
- To request a quota increase:
  1. In the Actions column, click Request.
    
    Important
    If Unadjustable is displayed in the Actions column, the quota cannot be increased.
  2. In the dialog box, set New Quota and Reason. Keep the default value for Notify Adjustment Results.
    Note
    
    To improve approval chances, specify a reasonable quota value and provide a detailed reason.
    
    You will receive the result by SMS and email.
  3. Click Confirm.
  4. In the left-side navigation pane, click Application Records to check the approval status.
    
    A status of Approved indicates a successful increase.

Manage ECS API rate limits

An API rate limit defines the maximum frequency of OpenAPI calls. For example, the RunInstances rate limit 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 block storage. Increases are not currently supported.

Go to the API Rate Limits of Elastic Compute Service page.
Select the target region.
In the quota list, view the rate limit. The Quotas column shows the upper rate limit for each API.

Note
Find a quota item by its API Name.

View or increase EBS API rate limits

EBS API rate limits apply to advanced block storage features for API version 2021-07-30.

Go to the API Rate Limits of Elastic Block Storage page.
Select the target region.
In the quota list, view or request an increase for a rate limit.
- To view a rate limit: The Quotas column shows the upper rate limit for each API.
  
  Note
  Find a quota item by its API Name.
- To request a rate limit increase:
  1. In the Actions column, click Request.
    
    Important
    If Unadjustable is displayed in the Actions column, the rate limit cannot be increased.
  2. In the dialog box, set New Quota and Reason. Keep the default value for Notify Adjustment Results.
    Note
    
    To improve approval chances, specify a reasonable quota value and provide a detailed reason.
    
    You will receive the result by SMS and email.
  3. Click Confirm.
  4. In the left-side navigation pane, click Application Records to check the approval status.
    
    A status of Approved indicates a successful increase.

References

Call DescribeAccountAttributes to query resource creation quotas in a region, including security groups, ENIs, vCPU limits for pay-as-you-go and spot instances, pay-as-you-go disk capacity, dedicated hosts, network types, and real-name verification status.
Quota Alerts: Create alerts for quota items to receive notifications when usage reaches a preset threshold, so you can request increases in advance.
Query applications and view application details: Track the approval status of your quota increase requests.
See Quota Center documentation for more quota operations.