Problem

You might realize that some of your files kept in the scratch file system have disappeared after a while.

Solution

The scratch filesystem is cleaned by a script on a regular basis: please check the cleaning policy on the section about scratch of the CSCS Knowledge Base.

Unfortunately, once the files on scratch have been deleted, there is no way to recover them: scratch is meant to keep only the temporary files needed for a run.

Please consider moving your valuable data from scratch  to other file systems or to your local storage after your simulations are complete using the data transfer service