Dynamic Tiering: Add/Remove Host Roles or Add/Remove Hosts – What’s the Difference?

When adding or removing the SAP HANA dynamic tiering worker role on an existing dynamic tiering system, the menu choices are as follows:

So why are there two of each and which do you use when?

There are two sets of options because there are two possible deployment scenarios:
dedicated host and same host.

A dedicated host deployment runs HANA and dynamic tiering on separate machines.  Use the second option, Add Hosts to the SAP HANA System and Remove Hosts from the SAP HANA System for this kind of deployment.

A same host deployment runs both components on the same machine. Use the first option Add Host Roles and Remove Host Roles for this kind of deployment.

To help you figure out if you’re using the right option: