SAN/NAS-Extension of a Computing Environment in Bioinformatics Christoph Biardzki Abstract Data storage always has been an important part of any computer system. Many companys nowadays struggle with exploding amounts of data and the increasingly difficult administration and management of distributed storage and backup systems. New technologies have been developed during the last few years which promise solutions to some of these problems. This diploma thesis describes a possible extension of storage systems for Epidauros Biotechnologie AG, a young biotech company working in the field of pharmacogenetics. The first part of the paper presents an overview of current storage system technology and important concepts. Special focus is put on interfaces and the trend towards specialized, interconnected storage networks (SANs). Additionally the interaction with upper software layers like hierarchical storage management systems or distributed file systems is explained. Requirements analysis and an examination of the present system are main topics in the second part. Operational, regulatory and economical requirements are identified. Then the role of the "Good Laboratory Practice"- quality management system is described. A qualitative and quantitative analysis of the existing IT-system secludes this part. The proposed solution leads to a centralized, networked storage and backup system which is then compared to other concepts. Finally some details of possible real-life implementations are discussed.