I am using a hp storageworks 72 device to take my backups with backup exec 10. Now, the capacity of my tapes is 72 Gigabyte, although the backup job asks to insert a new tape after about 58 Gigabyte backed up. Is that 72 Gigabyte only a theoretical amount of data which can be stored on tape (36 Gigabyte with an assumed compression ratio of 2)? And if so, can I increase that compression ratio? I am now using hardware compression.