OCLC defines digital preservation as “the ability to keep digital documents and files available for time periods that can transcend technological advances without concern for alteration or loss of readability.” The Purdue Libraries takes responsibility for sustaining access to datasets deposited into PURR for the long-term as described in the PURR Digital Preservation Policy. This policy explains the purpose, mandate, scope, challenges, incentives, principles, roles, responsibilities, criteria, and definitions for digital preservation for PURR.