In order to remove delete permissions so that a user is able to write files to a shared location on File Server but is unable to delete those files:
- Give the user Write access and take away Modify access
- Also, take away CREATED OWNER access on the parent folder and child objects; else the user who copies the file is able to delete the file as CREATED OWNER gets FULL CONTROL on the files he/she copies to the shared location.
- Make sure you check the box to “Replace permission entries on all child objects with entries shown here that apply to child objects” under Advanced Security Settings option on the parent folder and every time you change permission for the whole tree.
