You can run more than one Web Services Hub on a single node. When you run multiple Web Services Hub on one node, you increase the number of web services that you can run on a node and maximize the use of your resources.
When you configure the Web Services Hub to run web services in a domain, you can use the following options to improve performance and provide flexibility and scalability:
Associate multiple repositories with a Web Services Hub.
Associate a repository with multiple Web Services Hubs.