Can we install CRM Async Service separately on a server?

Hello, 

I know we can have CRM Front-End Servers and Back-End server roles. Question is, can we break the back-end roles further, such that we install Asynchronous Processing Service on a separate 2 servers and  install the remaining 2 back-end role services (Email Integration Service & Sandbox Processing Service) together on separate servers. Such as below 

1. CRM Front End 1
2. CRM Front End 2
3. CRM Back End - Async Service Server 1
4. CRM Back End - Async Service Server 2
5. CRM Back End - Email & Sandbox 1
6. CRM Back End - Email & Sandbox 2

Is this configuration supported? Also, will it be an efficient configuration to make sure the running workflows and the SDK calls doesn't hurt the CRM back-office business operations?

Thanks, 

Version: Dynamics CRM 365 On-premise