In order to optimize GPFS I/O performance all data in GPFS need to be homogeneously redistributed (restriped) accross all DDN SFA12k storage controllers attached to the SuperMUC system. To reduce the GPFS data restripe time we will activate the cleanup strategy of the $SCRATCH file system on Friday March 8, 2013 at 12:00 CET. Please note, that all data in /gpfs/scratch with a time stamp older than February 22nd, 2013 12:00 CET will be deleted by this automatic GPFS $SCRATCH cleanup mechanism. Since there is no automatic backup for $SCRATCH we strongly recommed to copy, transfer, or archive the files you want to keep as soon as possible but not later than Thursday March 7th, 2013. The SuperMUC file systems and file transfer policies are described in more detail in the following URL: http://www.lrz.de/services/compute/supermuc/filesystems/ This information is also available on our web server http://www.lrz-muenchen.de/services/compute/supermuc/aktuell/ali4536/ Herbert Huber