On November 24th 2009, Wolfgang Stief and Constantin Gonzalez had two talks on the topics "OpenSolaris" and "ZFS". The first talk gave an impression of the features of OpenSolaris and the projects in the community. Moreover, the possibilities in comparison to other operating systems were illustrated. The second talk explained the file system ZFS in detail: Which features work better than other file systems? What new features are available? Which possibilities are offered by ZFS?