When we backup very valuable data intending to be able to use it in the future, it is important to understand that the data is not self-sufficient at all. Data must be preserved together with contemporary environment where this data is used. It is obvious that 30 years later we will not be able to find software that is able to handle and manage the data stored today. Even if we had preserved the software it is still going to be a challenging problem find compatible platform to run this legacy software. So, if we store valuable data for future use, this task must be dealt as complex problem of preserving not just data itself, but also Software to manage the data, Operation System to host legacy software, and sometimes, even platform (hardware) itself. What means that dealing with and processing of the Legacy Data is complex and quite expensive task.