NTbackup

An incremental backup backs up all files created or modified since the last full backup, and sets the archive bit to show they've been backed up.

A differential backup backs up all files created or modified since the last full backup, and but does not set the archive bit to show they've been backed up.

A common backup strategy is to perform incremental backups Monday through Thursday or Friday and a full backup Friday or Sunday.

The drawback with incremental backups is that if the system crashes, to restore all your data, you'd have to restore the last full backup and ALL incremental backups since then.

With a differential backup, you'd only have to restore the last full backup and the differential backup.

What we used to do is use one tape for the differential backup on weeknights, overwriting the tape each night, and change the tape for the full weekend backup.

You can write batch files to do the backups:

ntbackup backup C:\ /b /t normal

and

ntbackup backup C:\ /b /t differential (or incremental)

Then you could use the AT command, or WinAT, or Task Scheduler if you have it, to run the batch files automatically.

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