If a CAS is being used, then any SAM that registers with the CAS is a Satellite (SAT) SAM.
The SAT SAM (server) is where monitoring data and alerts are generated. It has the entities (databases, OS) which are being monitored.
To view metric data for a database, you log into the CAS and then browse to the SAT. Then you view monitoring data by entity. The list of monitoring views which are available is dictated by which permissions have been granted to your login and by properties of the entity, such as database version.
For administrators of Surveillance: the cassetup utility is used to register a SAT with its CAS. This will automatically enroll the SAT in Hearbeat monitoring, to alert on whether the SAT server is up or down. Additionally, a FORWARD event action on a global event handler (*.*.*) needs to be configured on the SAT to forward all alerts onto to the CAS.