According to the people in the ZIB stored data are practically
the most important value. Correspondingly high are our efforts
related to security, speed and capacity of the central data
storage that is provided by the Department of IT Service. An
increasingly important role belongs of long-term storage of
irreplaceable data, such as results of measurements of physical
experiments, digitized views of archaeological artifacts and
documents. For this purpose we give users access to virtual
machines on powerful servers which are able to access capacity
on data storage. In addition to high own requirements for
storage capacity, there is a use by external scientific
institutes in the form of cooperations. For this purpose we give
them virtual machines on powerful servers which have access to
the data storage. Our work is an exact and securely
reproducibility of the data as a stream of bits without
examining the contents of the data. A continuous improvement of
the underlying technology sometimes requires a migratio