Verbatim’s proprietary dual reflective layer technology is comprised of a silver layer for broad compatibility and a gold layer for long archival life. The highly reflective silver layer allows the UltraLife™ DVD-R disc to look like a standard silver disc to DVD drives and recorders. This feature provides a low initial error rate after recording, important for long archival life, and the same drive read/write compatibility as standard silver-only discs. The gold reflective layer, naturally resistant to corrosion, prevents oxygen from coming through the DVD bonding material and corroding the silver reflective layer. Silver oxidation can be a primary factor which limits the lifetime of DVD media.