Preserving knowledge is a challenge for anyone who is there to protect and manage documents. Sought to draw a path that would contribute to the unit managers information on choosing the best form of preservation, either digital or analog. Through a literature review, we present results that collaborate with this decision process to adopt the mechanism to be used. Bringing decisive points as the position of librarian, discussing the preservation of information as well as an allocation of management in the communication era.

Keywords: Preservation of information. Scan. Conservation of Collections.