# Request a warm pool quota increase
<a name="train-warm-pools-resource-limits"></a>

To get started, you must first request a service limit increase for SageMaker AI managed warm pools. The default resource limit for warm pools is 0.

If a training job is created with `KeepAlivePeriodInSeconds` specified, but you did not request a warm pool limit increase, then a warm pool is not retained after the completion of the training job. A warm pool is only created if your warm pool limit has sufficient resources. After a warm pool is created, the resources are released when they move to a matching training job or if the `KeepAlivePeriodInSeconds` expires (if the warm pool status is `Reused` or `Terminated`).

Request a warm pool quota increase using the Amazon Service Quotas console.

**Note**  
All warm pool instance usage counts toward your SageMaker training resource limit. Increasing your warm pool resource limit does not increase your instance limit, but allocates a subset of your resource limit to warm pool training.

1. Open the [Amazon Service Quotas console](https://console.amazonaws.cn/servicequotas/home/).

1. On the left-hand navigation panel, choose **Amazon services**.

1. Search for and choose **Amazon SageMaker AI**.

1. Search for the keyword **warm pool** to see all available warm pool service quotas.

1. Find the instance type for which you want to increase your warm pool quota, select the warm pool service quota for that instance type, and choose **Request quota increase**.

1. Enter your requested instance limit number under **Change quota value**. The new value must be greater than the current **Applied quota value**.

1. Choose **Request**.

There is a limit on the number of instances that you can retain for each account, which is determined by instance type. You can check your resource limits in the [Amazon Service Quotas console](https://console.amazonaws.cn/servicequotas/home/) or directly using the [list-service-quotas](https://docs.amazonaws.cn/cli/latest/reference/service-quotas/list-service-quotas.html) Amazon CLI command. For more information on Amazon Service Quotas, see [Requesting a quota increase](https://docs.amazonaws.cn/servicequotas/latest/userguide/request-quota-increase.html) in the *Service Quotas User Guide*. 

You can also use [Amazon Support Center](https://support.console.aws.amazon.com) to request a warm pool quota increase. For a list of available instance types according to Region, see [Amazon SageMaker Pricing](https://www.amazonaws.cn/sagemaker/pricing/) and choose **Training** in the **On-Demand Pricing** table.