The Ultrium 3 4 Gb Fiber Channel Drive allows connection to a wide spectrum of open systems servers. IBM Ultrium 3 Tape Drives can read and write LTO Ultrium 2 Data Cartridges at original Ultrium 2 capacities. IBM Ultrium 3 tape drives can also read LTO Ultrium 1 Data Cartridges with improved data rates of up to 20 MB/sec native data transfer rate (40 MB/sec with 2: 1 compression).