Not every incident may dictate the need to obtain an image from a potentially compromised hard drive or other volume. Regardless, incident response analysts should be familiar with and able to perform this function when called upon. The evidence found on a hard drive may be critical to determine a sequence of events or to obtain actual files that can aid in determining the root cause. Finally, as with any process in a forensic discipline, imaging should be conducted in a systematic manner in which all steps are followed and properly documented. This will ensure that any evidence obtained will be sound and admissible in a courtroom. The next chapter will discuss examining network based evidence to what network activity is associated with an incident.