Obligatorily-acquired digital content items are stored under service control in one or more local storage machines of a computer based on service commands provided by a centralized management service; and voluntarily-acquired digital content items are stored under user control in the one or more local storage machines of the computer based on user commands. The obligatorily-acquired digital content items are protected from user-commanded deletion. The obligatorily-acquired digital content items are deleted from the one or more local storage machines based on service commands provided by the centralized management service. However, the voluntarily-acquired digital content items are deleted from the one or more local storage machines based on user commands.