Correct SLD entries for XI components (different db and app host)

We have 3 XI systems. At two systems application server and db server are at the same host. So when you look at the sld you can see all XI componets of one system on the same host.

Integration Repository on <sid><host>

Integration Directory on <sid><host>

Integration Server on <host>

RWB on <sid><host>

Adapter Engine on <sid><host>

But at our third system the application server and the db server are not at the same host. And so the sld entries look like this:

Integration Repository on <sid><db_host>

Integration Directory on <sid><db_host>

Integration Server on <app_host>

RWB on <sid><db_host>

Adapter Engine on <sid><db_host>

Is this correct? I would expect all XI components at the app_host.