Difference between Incremental and Differential back up

thanks everyone.

Since this information was asked in a NetBackup forum, we need to provide NetBackup specific information, instead of providing a link to information from a different company (Acronis), who may or may not have a different way of doing backups.

Since this question was asked in a NetBackup forum, we need to provide NetBackup specific information. The link and information you provided concerns BackupExec.

hi added some more you can check this artical.

http://www.acronis.com/resource/solutions/backup/2005/incremental-backups.html

https://www-secure.symantec.com/connect/forums/question-about-cumulative-incremental-backups

An Incremental backup backs up only the selected files that have their archive bit set to ON, setting them back to OFF. This results in a backup of all files that are new or changed since the last backup, whether it was a full or an incremental. The advantage of an Incremental is that it takes the least amount of time and media of all the backup methods.

A Differential backup backs up only the selected files that have their archive bit set to ON but does not set the archive bit back to OFF. A Differential backup will back up all selected files that are new and changed since the last full backup. The advantage of a Differential comes at restore time; you'll need only the last full backup and the last differential to get a complete restore. In the case of restoring with Incremental backups, all the Incremental backups since the last full backup plus the last full backup would be necessary.

http://www.symantec.com/business/support/index?page=content&id=TECH7665