PoF Framework Architecture. The architecture of the PoF Framework, described in detail in deliverable D8.1, is made up of three layers: Active Systems, Preserve-or-Forget (PoF) Middleware and Digital Preser- vation System (DPS), as depicted in Figure 11. The Active Systems represent user appli- cations, while the PoF Middleware is intended to enable seamless transition from Active Systems to the DPS (and vice versa) for the synergetic preservation, and to provide the necessary functionality for supporting managed forgetting and contextualized remember- ing. The PoF Middleware provides also the integration framework for all components developed in WP3-WP6. The DPS is composed by two sub-systems (Digital Reposi- tory and Preservation-aware Storage, including a Cloud Storage Service) and provides both content management and typical archive functionalities required for the synergetic preservation. The deliverable D8.1 also contained a preliminary discussion about the role of the OAIS Reference Model in the overall architecture: according to the project proposal, since OAIS nowadays is the most recognizable conceptualization of a digital preservation system, it was considered as one of the building blocks of ForgetIT approach. However, the model described in Section 3 complements and supersedes this initial approach towards the OAIS model. We further discuss the relationship with OAIS in Section 6.
