Tape, LTO, Ultrium-4, 800GB/1600GB - Introducing Imation LTO Ultrium Generation 4 Tape Cartridges, manufactured with Imation's proprietary Tera Angstromâ„ Technology. These next-generation cartridges combine the advantages of linear, multi-channel, bi-directional formats with enhancements in servo technology, data compression, track layout and error correction. The result is an exciting new media that delivers outstanding performance and twice the capacity of LTO Generation 3 cartridges.