Sony EM19100CWW 5.25" magneto optical disk

13.335 cm (5.25 ") Magneto Optical Media Rewritable - 9.1MB 5.25-inch MO disk combines the qualities of high-speed random access and long archival life to suit a variety of applications. including storage of diagnostic imaging, HIPAA and other regulatory compliance, non-linear audio/video editing, graphics processing, and document archiving by government offices and libraries. MO media is optimal for mission-critical storage environments that require both longevity and performance.