====Migration====

/scratch filesystems are relatively small and expensive.  Unused data will be migrated out (razor) or deleted (trestles).  

Razor: Top level subdirectories under /scratch/$USER are searched for files modified less than 60 days ago. If none are found, the subdirectories are migrated to either /storage/$USER/ if no name conflict or /storage/$USER/scratch if there is a name conflict.  This may erroneously move read-only data that doesn't hit the "modified" flag, but that data should be in /storage/$USER.  

Trestles: Top level subdirectories under /scratch (there are no $USER directories, only job directories) are deleted after 60 days.

**Please Note** razor scratch storage will be reconfigured to act like trestles within the next two months. Job scratch directories are auto-created and available now on razor the same as trestles.