IBM Tape, LTO-4, Ultrium-4, 800GB/1600GB IBM LTO 4 data tape has an increased cartridge capacity of 800GB and 1.6 TB capacity with 2:1 compression, which helps reduce the amount of space required for daily operations. It ultimately reduces the cartridges used and time spent with operations, helping you save money. It is engineered to improve read/write reliability and support design specifications. The cartridge includes an LTO Cartridge Memory (LTO-CM) chip for faster transfer rates with IBM tape drives during load and unload cycles.