DESC: Plasmon G-Series 5.25 inch optical libraries are the market-leading solution for professional archival storage. They feature the industrys most reliable architecture and highest data availability, and support multiple optical media to minimize the cost and frequency of media migration. Support for both 30GB UDO (Ultra Density Optical) and 9.1GB MO (Magneto Optical) storage technologies provides a backward-compatible archive platform built for the future.