You can run multiple open connections concurrently. If a connection 'times out' and is disconnected from a server, it remains disconnected until it is required, and then re-connects automatically.
To open a connection:
In Serena Explorer, right click on the Dimensions and select Connect To | <connection>.
The Login to Dimensions dialog box appears and displays the log-in details for the connection.
NOTE if you only have one connection defined, the Login to Dimensions appears immediately when you select Connect to.
Enter the password for the operating system user that you wish to log-in as, and click the OK button.