Immortal Files doesn't just make a backup, it creates transactional copies of data. This means that your backup will always remain intact, regardless of losses of connection with the backup storage device. Say, for example, you create a backup on an SFTP storage device which you have at home but, because the volume of data is too large, the backup doesn't finish copying. You close your laptop and leave for work. After you return home, the backup will resume from its stopping point. Or say the electricity goes out while you are making a backup. Transactional backup ensures that your data will be intact. Transactional backup in Immortal Files is based on the fact that operations in a file system are sequential. If part of a command is not executed for some reason, after restarting, Immortal Files will roll back your backup to its state before beginning the transaction. This allows you to never lose the structure of the backup. All backups which Immortal Files creates are executed in the transactional method. There is also a log record which allows you to see what happened, and when it happened. FTP, SFTP, WebDAV, SMB, and AFP protocols are supported.