The LTO Ultrium format generation 4 doubles storage capacity over generation 3 -- up from 800 GB in generation 3 (assuming a 2:1 compression) to 1.6 terabyte compressed capacity. And transfer rates are also improved -- reaching speeds up to 240 megabytes per second. For security purposes, generation 4 will feature encryption capabilities designed to enable LTO tape drive hardware-based writing of encrypted data to the LTO Ultrium tape cartridge, which helps protect the storage and transport of sensitive information.