What is the difference between a "Named" and a "Concurrent" StarTeam License?
Named licenses are reserved for use by a specific user whereas concurrent licenses are "pooled" licenses that can be shared across a group of users.
Named Licenses Most often deployed when one user will consume a license for a majority of their working hours. The most common example of this is a configuration manager who's full-time job is to manage version control configurations. In these cases, a named license is reserved for that user by the StarTeam administrator and no other user can consume that license. When the user population changes, however, the StarTeam administrator can reassign that license using the StarTeam administrative interface.
When a user logs into the StarTeam server using a named license, StarTeam records the IP address of the client machine. That user can log into the server at the same time from up to 5 unique IP addresses. This is to provide for users that might use multiple machines or for users to submit long-running processes on multiple machines. Once 5 unique IP addresses have been recorded for that user, however, no more sessions can be established with that user ID.
Concurrent Licenses Most often deployed when an organization has a group of users that will consume licenses for a part of their working hours. This might include anyone other than the full-time configuration managers, including casual users and reviewers. In these cases, the StarTeam administrator assigns users to the concurrent license pool through the StarTeam administrative interface.
When a user logs into the StarTeam server using a concurrent license, StarTeam takes one concurrent license from the pool and that license is consumed until the user explicitly logs off or the client and server timeouts dictate that the session should be terminated. The StarTeam server also records the IP address of the client machine and each unique combination of user ID and IP address consumes one license. So, if a concurrent user logs into the StarTeam server from two different machines, two concurrent licenses will be consumed.