If you are using dynamic views, before you can work with the contents of a VOB, you must mount the VOB on your computer. When the VOB is mounted, its folder appears under every dynamic view that you have started on your computer.
If you work with a particular VOB frequently, you can mount it automatically:
When you first mount the VOB, set Reconnect at Logon. Whenever you log on to your computer, the VOB is mounted as part of ClearCase startup.