The Acumen IT Support blog provides you with helpful articles about System Imaging.

System Imaging is crucial when it comes to the recovery process of damaged servers and work stations. The ideal scenario is for a system image to be taken of a computer when it’s in a good state and if disaster happens, it can be recovered quickly and easily. At Acumen Consulting, we use top-notch image recovery features, such as Microsoft Deployment Toolkit and Microsoft System Center.

Several web sites provide good overviews.

Imaging Systems & Components

System Image Wikipedia

System Imaging