Verbatim M-Disc is the new standard in digital storage designed to preserve and protect your files by engraving your information into a patented rock-like layer, resistant to light, temperature, and humidity. Industry standard ISO/IEC 10995 tests carried out by Millenniata showed the expected mean lifetime of an M-Disc DVD to be 1,332 years, with just 5% of discs showing signs of data loss after 667 years. Therefore the projected lifetime is expected to be several hundreds of years This means whether you re saving precious photographs, music libraries, medical documents, and more, you ll have the reassurance of knowing it s on a disc designed to last a lifetime.