AWS CloudHSM
User Guide

AWS CloudHSM Limits

The following limits apply to your AWS CloudHSM resources per AWS Region and AWS account.

Service Limits

Item Default Limit Hard Limit
Clusters 4 N/A
HSMs 6 N/A
HSMs per cluster N/A 28

System Limits

Item Hard Limit
Keys per cluster 3500
Number of users per cluster 1024
Maximum length of a user name 31 characters
Required password length 7 to 32 characters
Maximum number of concurrent clients 1024

To request an increase in the number of clusters or HSMs, use the service limit increase form in the AWS Support Center.