Regarding data storage and backup during research, MARVEL offers central storage for computational members at CSCS on "/store". Local storage within the institutions and the research groups is also possible, keeping in mind the importance of backups and backup retention. MARVEL requests at least weekly backups. It recommends a three-month backup retention, but accepts as a minimum a one-month backup retention. The EPFL Library reminds us of the horror of lost data in a humorous story.