Long Term Archiving & Retrieval of Digital Product Definition Data - Format Recommendation - In today's OEM and supplier companies, storing product definition information has moved to computer based digital management systems. Unfortunately, up to this point there has been no alignment between organizations on storage media, data architecture, authoring/editing software, and hardware infrastructure. The SASIG Long Term Archival and Retrieval team (LTAR) developed this project to guide the industry in effective, efficient, and common archival and retrieval practices. The recommendations are partitioned into four topic areas: Format, LTAR Process, Retention Time Periods, and Quality Assurance. Finally, this guide includes a test bed for assessing an enterprise's LTAR capability.