The Delta Processing algorithm provides very high effective compression ratios which enables many GB's of data to be backed up over relatively low speed lines such as ISDN dial-up lines. However, the initial backup is always a full backup and the user may not have the time (or patience) to wait for this backup to complete. To satisfy this situation the Titan Data Vault client may send the backup data to tape on the first backup. This tape(s) may be loaded at the Titan Data Safe Server and the data becomes the initial "seed" backup. Subsequent backups may be performed over the communication line.