4

File Backup
Data backup distinction between differential and incremental backup
1 1st backup 4 Data on the computer
White: Original data
Black: Altered data
2 2nd backup 5 Incremental backup
Data that has been modified since
the first backup is backed up
3 3rd backup 6 Differential backup
Data that has been modified since
the last previous backup are backed
up
Nero BackItUp 20