Online imaging means that the master system is imaged live (without restarting the machine or suspending operations). Online imaging can be performed remotely whenever you need. The disadvantage is that you have to install imaging software that is included in the master image. This is not always rational.
To perform online imaging
Install Management Console.
Configure the master system.
Install Management Agent on the master system either locally by using the setup program, or remotely by using Management Console. Once Management Agent is installed, you can image the master system online (without a restart) at any time.