With a compressed transfer rate of up to 240MB per second and storage capacity of up to 1.6TB/800GB, Ultrium 4 data cartridge provides two times the capacity of LTO 3 data cartridge and a transfer rate that is 50 percent faster. Backward compatible with earlier generations. Use in all 4 Ultrium drives. LTO Ultrium 4 format features encryption capabilities designed to enable hardware-based writing of encrypted data to the LTO Ultrium data cartridge. Features the WORM (Write Once, Read Many) to allow secure backup and storage of critical data for legal support and regulatory compliance such as Sarbanes Oxley, HIPAA and SEC 17a-4.