IBM Storage Media is pleased to announce the availability of IBM LTO Ultrium 6 Tape Cartridge, 2.5 TB (native); 6.25 TB (2.5:1 compression). Highest capacity tape media for high reliability and long life! Key features of the IBM LTO-6 tape drive are designed to improve performance and capabilities over IBM LTO-5, IBM LTO-4 and other tape drives. Some of the... improvements include: Native data rate of up to 160 MB/s.