today we had a major crash which impacted nearly the whole infrastructure. After bringing up all other servers, the logins of our clients (Windows 7 + Novell Client) took very long. More than 2-3 min for a normal Desktop-Login.

Later we found out that the ZCM-Server was pretty much dead because the database server in the background wasn't brought up correctly. Anyway, after solving the zcm problem we had normal login behaviour on the clients.

Now my questions is a more general one:

Which role does the Zenworks Agent play in the login process? Could someone please describe this in more detail for me?