IBM Spectrum Protect (TSM) - servers and instances defined
IBM Spectrum Protect (TSM) Server- The system that is running the server software. This system will be known by its host name. It is the physical or virtual host onto which one or more IBM Spectrum Protect (TSM) instances reside.
IBM Spectrum Protect (TSM) Instance - A separate instance of the server software running on a TSM server. A single TSM server can run multiple TSM Instances. This is normally implemented by setting up a separate set of client and administration ports for each TSM Instance. In the architecture illustration, there are two TSM servers - one has a single TSM Instance running on it and the other Host has two TSM Instances running on it.