Dear users of SuperMUC and the migration system supzero, we are now (with considerable delay) preparing to integrate the migration system supzero into the SuperMUC system. In order to complete the integration work, both SuperMUC and the migration system will require scheduled maintenance phases: 1. On July 16, 08:00, SuperMIG (supzero) will be shut down. Two weeks later, it will return as SuperMUC's fat-node island. During this period there will be no user operation on this part of the system. 2. From July 17, 08:00 to July 18, 18:00, SuperMUC will not be available for user operation, too. Please note that any LoadLeveler jobs on supzero that have not completed when the maintenance starts will be lost. After the maintenance, the fat node island will use the same Loadleveler instance, operating environment and GPFS file system as presently available on SuperMUC. Details on the changes in using the fat island as well as how to deal with the existing data on SCRATCH and WORK will be separately published; the system documentation will be accordingly updated. This information is also available on our web server http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4619/ Reinhold Bader