1. FZI Research Center for Information Technology, Karlsruhe, Germany
2. T CED SSI-DE, Siemens Technology, Erlangen, Germany
3. Chair of Computer Science 4 (Distributed Systems and Operating Systems), Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany
4. Institut für Technik der Informationsverarbeitung - ITIV, Karlsruhe Institute of Technology - KIT, Karlsruhe, Germany