Sony's advanced MO disks offer quick access and reduced cost per megabyte. They help satisfy the growing backup and near-line storage needs of data libraries and network environments, including video server, multimedia, CAD/CAM, medical images, and pre-press applications. The recording layer in Sony MO disks features a Wide Margin design to accommodate variations in laser power in a broad range of usage environments. High precision stamper and substrate molding technology contribute to consistently stable performance. High output is maintained even after 10-million erase/write/playback cycles, and estimated archival life is over 50 years, making these MO disks suitable for long-term storage. Ideal for auto-changers, Sony's original cartridge design and robust parts achieve durability that withstands 100, 000 insertion cycles per side. An original anti-static hard coat guards the disk surface against dust and scratches.