# Scaling HSMs in an AWS CloudHSM cluster
<a name="add-remove-hsm"></a>

To scale up or down your AWS CloudHSM cluster, add or remove HSMs by using the [AWS CloudHSM console](https://console.aws.amazon.com/cloudhsm/) or one of the [AWS SDKs or command line tools](https://aws.amazon.com/tools/). We recommend load testing your cluster to determine the peak load you should anticipate, and then add one more HSM to it to ensure high availability.

**Topics**
+ [Adding an HSM to an AWS CloudHSM cluster](add-hsm.md)
+ [Removing an HSM from an AWS CloudHSM cluster](remove-hsm.md)