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I want to backup my domain using differential backup on ntbackup, question is what if my computer crashes in the middle of the backup, would that corrupt my previous one?


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The short answer is no. A failed differential backup does not invalidate your previous backup.

A differential is a backup of all the files that have changed since the last full backup. So as long as you still have your last full backup, plus your previous incremental, you're ok.

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Question is, whether on not ntbackup puts the last backup into a invalid state while backuping (because it is done every day, into the same file), and if a crash would keep that file in that state, or does it create a different backup file and then swap the two? – Haim Bender Dec 3 '09 at 20:35
oh. your appending to the same file? You'd have to test that i guess. Why can't you backup to a new bkf file each time to avoid the problem? – Nick Kavadias Dec 3 '09 at 23:23

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