TDK LTO Ultrium data cartridges are high density recording media products designed to function as seamless extensions of your organization"s data network. Capacity: 400GB/800GB (compressed). Format: LTO3. Quantity: 1. TDK Life on Record LTO Ultrium 3 data cartridges are a cost-effective, high-volume professional data storage solution.II With 400 GB native (800GB compressed) storage capacity and a 20 MB per second native (40MB/s compressed) transfer rate, TDK LTO Ultrium 3 cartridges are the ideal media solution for your Ultrium 3drive.