During Fall 2018 the HPC team upgraded the size of the /nfsscratch filesystem. This upgrade included a change in the underlying technology that has lead to inconsistent, and more recently, a lack of enforcement of the 60 day scratch cleaning policy (details available here).
As the /nfsscratch filesystem has grown in size we have been manually contacting large scratch users asking them to delete files.
In conjunction with this manual action we have addressed the technology issues and automated scratch cleaning will resume on June 1, 2019.
If you have any questions or concerns please contact firstname.lastname@example.org.