DAGDA (Data Arrangement for Grid and Distributed Applications) is a new data manager for DIET. DAGDA offers to the DIET application developers a simple and efficient way to manage the data. It was not designed to replace the JuxMem extension but to be possibly coupled with it. In a future work, DAGDA will be divided in two parts: The DAGDA data manager and the DAGDA data interface. The data interface will make interactions between DAGDA, JuxMem, FTP etc. and other data transfer/management protocols. In this chapter, we will present the current version of DAGDA which is an alternative data manager for DIET with several advanced data management features.